�{02188.  A vessel is heading magnetic north and its magnetic compass indicates a heading of 003ø.  What action should be taken to remove this error during compass adjustment?                                                              A.  If the red ends are to starboard the athwartships magnets should be lowered.                                                              B.  If the blue ends are forward the fore-and-aft magnets should be raised.                                                              C.  If the red ends are to starboard and the tray is at the top add some athwartships magnets.                                                              D.  If the blue ends are aft the fore-and-aft magnets should be raised.                                                              }{02189.  A vessel is heading magnetic north and its magnetic compass indicates a heading of 003ø.  What action should be taken to remove this error during compass adjustment?                                                              A.  If the blue ends are to port and the athwartships tray is at the bottom, you should add some more magnets.                                                              B.  If the blue ends are to port and the athwartships tray is at the top, you should add some more magnets.                                                              C.  If the red ends are to port, you should lower the athwartships tray.                                                              D.  If �he red ends are to port and the tray is at the bottom, you should raise the tray.                                                              }{02190.  Clouds are classified according to their __________.                                                              A.  size                                                              B.  moisture content                                                              C.  altitude and how they were formed                                                              D.  location in a front                                                              }{02191.  The chart indicates the variation was 3ø45' E in 1988, and the annual change is increasing 6'.  If you use the chart in 1991 how much variation should you apply?                                                              A.  3ø27' E                                                              B.  3ø27' W                                                              C.  3ø45' E                                                              D.  4ø03' E                                                              }{02194.  A vessel is heading magnetic north and its magnetic compass indicates a heading of 003ø.  What action should be taken to remove this error during compass adjustment?                                                              A.  If the red ends of the magnets are forward you should lower the fore-and-aft magnets.                                                              B.  If the blue ends of the magnets are forward you should lower the fore-and-aft magnets.                                                              C.  If the blue ends of the magnets are to port and the athwartships tray is at the bottom you should reverse the magnets.                                                     D.  If the blue ends of the magnets are to port and the athwartships tray is at the top you should add some magnets.                                                              }��02196.  A vessel is heading magnetic northwest and its magnetic compass indicates a heading of 312ø.  What action should be taken to remove this error during compass adjustment?                                                              A.  If the quadrantal spheres are all the way out, replace them with smaller spheres.                                                              B.  If the quadrantal spheres are all the way in, replace them with larger spheres.                                                              C.  Move the spheres in                                                              D.  Any of the above                                                              }{02198.  Opposition occurs when _____________________.                                                              A.  the Sun, Earth, and Moon are at right angles                                                              B.  the Sun's declination is 0ø and is moving south                                                              C.  an inferior planet is at the maximum angle to the line of sight to the Sun                                                              D.  the Earth is between a planet and the Sun                                                              }{02199.  Denebola is found in what constellation?                                                              A.  Hydrus                                                              B.  Leo                                                              C.  CentAurus                                                              D.  Aquila                                                              }{02200.  Cloud formations are minimal when the ____________.                                                              A.  surface temperature and temperature aloft are equal                                                              B.  surface temperature and temperature aloft differ greatly                                                              C.  barometric pressure is very low                                                              D.  relative humidity is very high                                                              }{02202.  You have completed the magnetic compass adjustments on magnetic east and magnetic south.  The vessel is now steady on magnetic west but the compass reads 276ø. What action should be taken?                                                              A.  Adjust the compass with the athwartships magnets until the compass reads 264ø                                                              B.  Adjust the compass with the fore-and-aft magnets until the compass reads 273ø                                                              C.  Adjust the compass with the quadrantal spheres until the compass reads 270ø                                                              D.  Adjust the compass with the athwartships magnets until the compass reads 273ø                                                              }{02203.  You get underway from the shipyard in Chester, PA, at 1515 DST (ZD +4) on 6 August 1983, enroute to sea.  You will be turning for eight knots.  What current can you expect at Fourteen Foot Bank Light?                                                              A.  Slack                                                              B.  1.3 knots ebbing                                                              C.  1.7 knots ebbing                                                              D.  0.5 knot ebbing                                                              }{02207.  Yesterday your chronometer read 11h 59m 58s at the 1200 GMT time tick.  Today your chronometer reads 00h 00m 00s at the 1200 time tick.  What is the chronometer rate?                                                              A.  Nil                                                              B.  12h                                                              C.  +2s                                                              D.  -2s                                                              }�{02209.  You have completed the magnetic compass adjustments on magnetic east and magnetic south.  The vessel is now steady on magnetic west but the compass reads 266ø.  You should now adjust the compass until it reads __________.                                                              A.  268ø                                                              B.  270ø                                                              C.  274ø                                                              D.  Do not adjust the compass; just record the error                                                              }{02210.  A dead reckoning (DR) plot _______________.                                                              A.  ignores the effect of surface currents                                                              B.  is most useful when in sight of land                                                              C.  must be plotted using magnetic courses                                                              D.  may be started at an assumed position                                                              }{02212.  What information is found in the chart title?                                                              A.  Number of the chart                                                              B.  Edition date                                                              C.  Variation information                                                              D.  Survey information                                                              }{02214.  By convention, the Earth's south magnetic pole is colored _________.                                                              A.  blue                                                              B.  black                                                              C.  white                                                              D.  red                                                              }{02215.  You are required to enter a lock on your voyage. Information on the lock regulations, signals, and radio communications can be found in ________________.                                                              A.  the publication "Key to the Locks"                                                              B.  Bowditch                                                              C.  Corps of Engineers Information Bulletin                                                              D.  Coast Pilot                                                              }{02216.  A vessel is heading magnetic northwest and its magnetic compass indicates a heading of 317ø.  What action should be taken to remove this error during compass adjustment?                                                              A.  Move the quadrantal spheres out                                                              B.  Move the quadrantal spheres in                                                              C.  If the spheres are in as far as possible replace them with smaller spheres                                                              D.  If the spheres are out as far as possible replace them with smaller spheres                                                              }{02219.  A vessel is heading magnetic northwest and its magnetic compass indicates a heading of 317ø.  What action should be taken to remove this error during compass adjustment?                                                              A.  If the quadrantal spheres are in as far as possible replace them with larger spheres.                                                              B.  If the quadrantal spheres are in as far as possible replace them with smaller spheres.                                                              C.  Move the quadrantal spheres out.                                                              D.  If the spheres are in as far as possible remove one of the spheres.                                                              }�{02220.  A dead reckoning (DR) plot ___________________.                                                              A.  must utilize magnetic courses                                                              B.  must take set and drift into account                                                              C.  should be replotted hourly                                                              D.  should be started each time the vessel's position is fixed                                                              }{02222.  By convention, the south pole of a magnet is painted _____________.                                                              A.  red                                                              B.  blue                                                              C.  white                                                              D.  black                                                              }{02224.  By convention, the north seeking ends of a compass' magnets are colored ______________.                                                              A.  black                                                              B.  blue                                                              C.  red                                                              D.  white                                                              }{02226.  Upper limb observations of the Moon are used more frequently than those of the Sun because of the location of the Moon in the sky and the _________________.                                                              A.  lesser distance between the Earth and the Moon                                                              B.  phase of the Moon                                                              C.  rapid change in declination of the Moon                           �                                  D.  effects of augmentation and horizontal parallax                                                              }{02229.  A vessel is heading magnetic north and its magnetic compass indicates a heading of 003ø.  What action should be taken to remove this error during compass adjustment?                                                              A.  If the red ends are to port the athwartships magnets should be raised.                                                              B.  If the blue ends are to port the athwartships magnets should be raised.                                                              C.  If the red ends are forward the fore-and-aft magnets should be lowered.                                                              D.  If the blue ends are forward the fore-and-aft magnets should be raised.                                                              }{02230.  A nautical mile is a distance of approximately how much greater than or less than a statute mile?                                                              A.  1/4 less                                                              B.  1/7 less                                                              C.  1/4 greater                                                    �         D.  1/7 greater                                                              }{02232.  A vessel is heading magnetic north and its magnetic compass indicates a heading of 003ø.  What action should be taken to remove this error during compass adjustment?                                                              A.  If the red ends are to starboard you should raise the athwartships tray.                                                              B.  If the red ends are to starboard, and the athwartships tray is at the bottom, you should remove some magnets.                                                              C.  If the red ends are to port, and the athwartships tray is at the top, you should reverse the magnets.                                                              D.  If the red ends are to port, and the athwartships tray is at the top, you should lower the tray.                                                              }�{02234.  A vessel is heading magnetic north and its magnetic compass indicates a heading of 003ø.  What action should be taken to remove this error during compass adjustment?                                                              A.  Move the quadrantal spheres closer t� the compass                                                              B.  Raise the heeling magnet if the red end is up                                                              C.  Remove some of the Flinders bar                                                              D.  Raise or lower the athwartships magnets                                                              }{02236.  Which is true of a downbound power-driven vessel, when meeting an upbound vessel on the Western Rivers?                                                              A.  She has the right of way.                                                              B.  She shall propose the manner of passage.                                                              C.  She shall propose the place of passage.                                                              D.  All of the above                                                              }{02238.  A vessel is heading magnetic northwest and its magnetic compass indicates a heading of 312ø.  What action should be taken to remove this error during compass adjustment?                                                              A.  If the quadrantal spheres are all of the way out replace them with larger spheres.                                                              B.  If the quadrantal spheres are all of the way in replace them with larger spheres.                                                              C.  Move the spheres out                                                              D.  Any of the above                                                              }{02239.  A flashing green light displayed at a single lock means that the lock is ___________.                                                              A.  ready for entrance                                                              B.  ready for entrance, but gates cannot be closed completely                                                              C.  being made ready for entrance                                                              D.  not ready for entrance                                              �               }{02240.  If you observe a buo� off station you should __________.                                                              A.  fill out and mail CG Form 2692 to the nearest Coast Guard office                                                              B.  appear in person at the nearest Coast Guard office                                                              C.  notify Coast Guard Headquarters in Washington, DC                                                              D.  immediately contact the nearest Coast Guard office by radiotelephone                                                              }{02242.  A vessel is heading magnetic north and its magnetic compass indicates a heading of 356ø.  What action should be taken to remove this error during compass adjustment?                                                              A.  If the red ends of the magnets are to port you should lower the athwartships tray.                                                              B.  If the red ends of the magnets are aft you should raise the fore-and-aft tray.                                                              C.  If the blue ends of the magnets are to port, and the athwartships tray is at the top, you should remove some of the magnets.                                                 D.  If the blue ends of the magnets are aft you should raise the fore-and-aft tray.                                                              }{02244.  Capella is found in what constellation?                                                              A.  Gemini                                                              B.  Auriga                                                              C.  Libra                                                              D.  Crab                                                              }�{02246.  The speed of an ocean current Is dependent on _________.                                                              A.  the density of the water                                   �                          B.  the air temperature                                                              C.  the presence of a high pressure area near it                                                              D.  underwater soil conditions                                                              }{02248.  A vessel is heading magnetic north and its magnetic compass indicates a heading of 356ø.  What action should be taken to remove this error during compass adjustment?                                                              A.  If the red ends of the magnets are to port you should raise the athwartships tray.                                                              B.  If the red ends of the magnets are to port, and the athwartships tray is at the top, you should add some more magnets.                                                C.  If the red ends of the magnets are to starboard you should lower the athwartships tray.                                                              D.  If the red ends of the magnets are to starboard, and the athwartships tray is at the top, you should add some more magnets.                                                     }{02250.  The most important information to be obtained from a barometer is the _____________.                                                              A.  difference between the reading of the two pointers, which shows wind direction                                                              B.  last two figures of the reading of the pointer, such as .87, .76, or .92                                                              C.  present reading of the pressure, combined with the changes in pressure observed in the recent pasT                                                              D.  weather indications printed on the dial (such as "cold, wet, etc.") under the pointer                                                              }{02252.  The vertical angle between the horizontal and the magnetic line of force is the _______________.                                                              A.  elevation                                                              B.  magnetic angle                                                              C.  vertical angle                                                              D.  dip                                                              }{02254.  A rock and sand structure extending from the bank of the river toward the channel is known as a ____________.                                                              A.  wingdam                                                              B.  towhead                                                              C.  cutoff                                                              D.  landwall                                                              }{02256.  The constellation that contains Polaris is _____________.                                                              A.  Orion                                                              B.  Cassiopeia                                                              C.  Ursa Minor                                                              D.  Corona Borealis                                                              }{02258.  The primary use of apparent time in marine navigation is to ________.                                                              A.  calculate sunrise or sunset                                                              B.  determine zone time                                                              C.  enter an almanac                                                              D.  determine the of time of meridian transit                                                              }�{02259.  A vessel is heading magnetic northwest and its magnetic compass indicates a heading of 317ø.  What action should be taken to remove this error during compass adjustment?                                                              A.  If the quadrantal spheres are out as far as possible replace them with smaller spheres.                                                              B.  If the quadrantal spheres are in as far as possible remove one of the spheres.                                                              C.  If the quadrantal spheres are iF as far as possible replace them with smaller spheres.                                                              D.  Move the quadrantal spheres in.                                                              }{02260.  A device trailed astern of a vessel to measure distance traveled through the water is a(n) _______________________.                                                              A.  ammeter                                                              B.  patent log                                                              C.  trim tab                                                              D.  drogue                                                              }{02262.  The Milky Way is an example of a ________________.                                                              A.  cluster                                                              B.  galaxy                                                              C.  nova                                                              D.  nebula                                                              }{02264.  The revision date of a chart is printed on what area of the chart?                                                              A.  Top center                                                              B.  Lower-left corner                                                              C.  Part of the chart title                                                              D.  Any clear area around the neat line                                                              }{02266.  It is difficult to determine which limb of the Moon is fully illuminated  ________________.                                                              A.  when the Moon is low in the sky at rising or setting                                                              B.  at the new Moon phase                                                              C.  when taking Moon sights during daylight                                                              D.  when the terminator is nearly vertical                                                              }{02268.  What condition exists at perigee?                                                              A.  The Earth is farthest from the Sun.                                                              B.  The EArth, Sun, and Moon are in line.                                                              C.  The Earth, Sun, and Moon are at right angles.                                                              D.  The Moon is closest to the Earth.                                                              }{02269.  One of the factors which affects the circulation of ocean currents is ________.                                                              A.  humidity                                                              B.  varying densities of water                                                              C.  vessel traffic                                                              D.  the jet stream                                                              }{02270.  The lubber's line of a magnetic compass _______________.                                                              A.  always shows true north direction                                                              B.  indicates the vessel's heading                                                              C.  is always parallel to the vessel's transom                                                              D.  is located on the compass card                                                              }�{02272.  Mars will not be visible _________________.                                                              A.  at elongation angles near 180ø                                                              B.  from quadrature to opposition                                                              C.  at conjunction                                                              D.  at opposition                                                              }{02274.  A vessel is heading magnetic east and its magnetic compass indicates a heading of 086ø.  What action should be taken to remove this e�ror during compass adjustment?                                                              A.  If the red ends of the magnets are to port you should lower the athwartships tray.                                                              B.  If the blue ends of the magnets are to port, and the athwartships tray is at the top, you should reverse the magnets.                                                 C.  If the red ends of the magnet are aft, and the fore-and-aft tray is at the top, you should add some more magnets.                                                              D.  If the red ends of the magnets are aft you should lower the fore-and-aft tray.                                                              }{02276.  A vessel is heading magnetic east and its magnetic compass indicates a heading of 086ø.  What action should be taken to remove this error during compass adjustment?                                                              A.  If the blue ends of the magnets are aft, and the fore-and-aft tray is at the top, you should add some magnets.                                                     B.  If the blue ends of the magnets are aft you should lower the fore-and-aft tray.                                                              C.  If the blue ends of the magnets are aft, and the fore-and-aft tray is at the top, you should reverse the magnets.                                                     D.  If the blue ends of the magnets are forward, and the fore-and-aft tray is at the bottom, you should add some magnets.                                                     }{02277.  The Light List indicates that a lig@t has a nominal range of 20 miles and is 52 feet high.  If the visibility is 12.0 miles and your height of eye is 20 feet, at what approximate distance will you sight the light?                                                              A.  21.5 miles                                                              B.  20.0 miles                                                              C.  13.7 miles                                                              D.  12.0 miles                                                              }{02278.  Superior conjunction occurs when ___________________.                                                              A.  the Sun is at maximum declination north or south                                                              B.  a planet crosses the external plane of the ecliptic                                                              C.  the Sun is between the Earth and a planet                                                              D.  two planets are in line                                                              }{02279.  Antares is found in what constellation?                                                              A.  Scorpio                                                              B.  Corvus                                                              C.  Libra                                                              D.  Corona Borealis                                                              }{02280.  Which of the following would influence a magnetic compass?                                                              A.  Electrical wiring                                                              B.  Iron pipe                                                              C.  Radio                                                              D.  All of the above                                                              }�{02282.  You have completed the magnetic compass adjustments on magnetic east and magnetic south.  The vessel is now steady on magnetic west but the compass reads 276ø.  You should now adjust the compass until it reads __________.                                                              A.  264ø                                                              B.  270ø                                                              C.  273ø                                                              D.  Do not adjust the compass; just record the error                                                              }{02284.  Bellatrix is found in what constellation?                                                              A.  Canis Minor                                                              B.  Gemini                                                              C.  Taurus                                                              D.  Orion                                                              }{02286.  Which of the following light signals indicates that you have permission to enter a lock on the Ohio River?                                                              A.  Steady red                                                              B.  Flashing amber                                                              C.  Steady green                                                              D.  Flashing green                                                              }{02288.  A mean sun is used as the reference for solar time for three reasons.  Which reason is NOT a cause for use of a mean sun?                                                              A.  The motion of the apparent sun is along the ecliptic.                                                              B.  Measurement of time is along the celestial equator.                                                              C.  The speed of the Earth's revolution is not constant.                                                              D.  There are variations in the Earth's rotational speed.                                                              }{02289.  The constellation that contains the pointer stars is _________________.                                                              A.  Orion                                                              B.  Ursa Major                                                              C.  the Southern Cross                                                              D.  Pegasus                                                              }{02290.  Magnets in the binnacles of magnetic compasses are used to reduce the effect of ___________.                                                              A.  deviation                                                              B.  variation                                                              C.  local attraction                                                              D.  All of the above                                                              }{02292.  The points on the earth's surface where the magnetic dip is 90ø are ________________.                                                              A.  along the magnetic equator                                                              B.  connected by the isoclinal line                                                              C.  the isopors                                                              D.  the magnetic poles                                                              }{02294.  What celestial body may sometimes be observed in daylight?                                                              A.  New Moon                                                              B.  Saturn                                                              C.  Sirius                                                              D.  Venus                                                              }�{02296.  A variable star is one that ________________.                                                              A.  exhibits a change in magnitude                                                              B.  has a changing declination                                                              C.  is increasing in SHA                                                              D.  is also known as a red giant                                                              }{02298.  The period of rotation of the Moon on its axis is _______________.                                                              A.  about 19 years                                                              B.  365 days                                                              C.  about 27.3 days                                                              D.  24 hours                         �                                    }{02299.  What condition exists at apogee?                                                              A.  The Earth is closest to the Sun.                                                              B.  The Moon is farthest from the Sun.                                                              C.  The Earth is farthest from the Moon.                                                              D.  The Moon is between the Earth and the Sun.                                                              }{02300.  When a magnetic compass is not in use for a prolonged period of time it should _____________.                                                              A.  be shielded from direct sunlight                                                              B.  be locked into a constant heading                                                              C.  have any air bubbles replaced with nitrogen                                                              D.  have the compensating magnets removed                                                              }{02302.  You must draw a plotting sheet covering latitudes 38ø N to 41ø N and longitudes 179ø E to 178ø W.  If the distance between latitude 38ø N to 41ø N is 15.5 inches, what is the distance between the meridians of 1ø of latitude?                                                              A.  4.0 inches                                                              B.  4.4 inches                                                              C.  4.9 inches                                                              D.  5.3 inches                                                              }{02304.  The Moon is subject to four types of libration.  Which of the following is NOT one of these types of libration?                                                              A.  Libration in longitude                                                              B.  Diurnal libration                                                              C.  Vertical libration                                                              D.  Libration in latitude                                                              }{02306.  In the North Sea area, you sight a buoy showing a quick white light with 9 flashes every 15 seconds.  Which of the four topmarks shown in illustration D031NG would be fitted to the buoy?                                                              A.  A                                                              B.  B                                                              C.  C                                                              D.  D                                                              }{02308.  The points where the Sun is at 0ø declination are known as _________.                                                              A.  solstices                                                              B.  equinoxes                                                              C.  perigee                                                              D.  apogee                                                              }�{02309.  The plane of the ecliptic is inclined to the plane of the celestial equator by what angle?                                                              A.  00ø23'                                                              B.  23ø27'                                                              C.  45ø00'                                                              D.  90ø00'                                                              }{02310.  Which weather instrument measures atmospheric pressure?                                                              A.  Beaufort scale                                                              B.  Anemometer                                                              C.  Sling psychrometer                                                              D.  Barometer                                                              }{02312.  Mars is only seen at two phases, one of which _____________.                                                              A.  is the full phase                                                              B.  is conjunction                                                              C.  occurs only at sunset or sunrise                                                              D.  occurs at or near 0ø elongation                                                              }{02314.  A vessel is heading magnetic east and its magnetic compass indicates a heading of 086ø.  What action should be taken to remove this error during compass adjustment?                                                              A.  If the blue ends of the magnets are forward you should raise the fore-and-aft tray.                                                              B.  If the blue ends of the magnets are aft you should lower the fore-and-aft tray.                                                              C.  If the blue ends of the magnets are aft, and the fore-and-aft tray is at the top, you should add some magnets.                                                     D.  If the blue ends of the magnets are aft, and the fore-and-aft tray is at the bottom, you should reverse the magnets.                                                     }{02316.  Elongation becomes zero at _______________.                                                              A.  opposition                                                              B.  west quadrature                                                              C.  apogee                                                              D.  inferior conjunction                                                              }{02317.  The Light List indicates that a light has a nominal range of 13 miles and is 36 feet high.  If the visibility is 7.0 miles and your height of eye is 25 feet, at what approximate distance will you sight the light?                                                              A.  10.0 miles                                                              B.  12.9 miles                                                              C.  14.2 miles                                                              D.  17.0 miles                                                              }{02318.  Miaplacidus is found in what constellation?                                                              A.  Puppis                                                              B.  Hydrus                                                              C.  Centaurus                                                              D.  Carina                                                              }{02319.  In low latitudes, the new Moon will always rise at about _________.                                                              A.  sunrise                                                              B.  1200 LMT                                                              C.  sunset                                                              D.  2400 LMT                                                              }�{02320.  The type of current which will have the greatest effect on the course made good for your vessel is _____________.                                                              A.  one flowing in the same direction as your course steered                                                              B.  one flowing in the opposite direction as your course steered                                                              C.  one that flows at nearly right angles to your course steered                                                              D.  a rotary current in which the direction of current flow constantly changes                                                              }{02322.  You have completed the magnetic compass adjustments on magnetic east and magnetic south.  The vessel is now steady on magnetic north but the compass reads 356ø. What action should be taken?                                                              A.  Use the fore-and-aft magnets and adjust the compass until it reads 358ø                                                              B.  Use the athwartships magnets and adjust the compass until it reads 358ø                                                              C.  Use the fore-and-aft magnets and adjust the compass until it reads 000ø                                                              D.  Use the quadrantal spheres and adjust the compass until it reads 000ø                                                              }{02324.  Deneb is found in what constellation?                                                              A.  Cygnus                                                              B.  Pegasus                                                              C.  Ursa Major                                                              D.  Andromeda                                                              }{02326.  A double star is a star that _________________.                                                              A.  has a declination equal to twice that of the Sun                                                              B.  comprises two stars that appear close together                                                              C.  is twice as bright as a single star                                                              D.  suddenly becomes much brighter and then fades                                                              }{02328.  Universal time (UTI) is another name for _______________.                                                              A.  sidereal time                                                              B.  Greenwich mean time                                                              C.  ephemeris time                                                              D.  atomic time                                                              }{02329.  In low latitudes, a last quarter moon will always rise at about _____________.                                                              A.  sunrise                                                              B.  1200 LMT                                                              C.  sunset                                                              D.  2400 LMT                                                              }{02330.  Your are heading in a northerly direction when you come across an easterly current.  Your vessel will __________.                                                              A.  be pushed to starboard                                                              B.  be pushed to port                                                              C.  decrease in engine speed                                                              D.  remain on course                                                              }�{02332.  Magnetic dip is a measurement of the angle between the ________.                                                              A.  geographic pole and the magnetic pole                                                              B.  lubber's line and true north                                                              C.  horizontal and the magnetic line of force                                                              D.  compass heading and the magnetic heading                                                              }{02334.  Other than the Sun and Moon, the brightest object in the sky is ______________.                                                              A.  Sirius                                                              B.  Canopus                                                              C.  Venus                                                              D.  Jupiter                                                              }{02335.  The Light List indicates that a light has a nominal range of 13 miles and is 36 feet high.  If the visibility is 17 miles and your height of eye is 25 feet, at what approximate distance will you sight the light?                                                              A.  10.0 miles                                                              B.  12.9 miles                                                              C.  14.2 miles                                                              D.  17.0 miles                                     �                        }{02336.  The period of revolution of the Moon is ______________.                                                              A.  24 hours                                �                             B.  about 27.3 days                                                              C.  365 days                                                              D.  about 19 years                                                              }{02338.  A group of stars which appear close together and form a striking configuration such as a person or animal is a _________________.                                                              A.  cluster                                                              B.  shower                                                              C.  constellation                                                              D.  galaxy                                                              }{02340.  What is a "Special Warning"?                                      �                       A.  An urgent message concerning a vessel in distress                                                              B.  A weather advisory about unusual meteorological or oceanographic �henomena hazardous to vessels                                                              C.  A broadcast disseminating an official government proclamation affecting shipping                                                              D.  A radio navigational warning concerning a particularly hazardous condition affecting navigation                                                              }{02342.  What happens because of augmentation?                                                              A.  The Moon appears larger as the elevation increases.                                                              B.  The Sun appears larger when viewed against the darker background of the horizon.                                                              C.  The horizon appears elevated when observing a bright Sun or Moon at low altitudes.                                                              D.  The Moon appears larger at the full Moon.                                                              }�{02344.  The Moon is subject to four types of libration.  Which of the following is NOT one of these types of libration?                                                              A.  Libration in latitude                                                              B.  Diurnal libration                                                              C.  Physical libration                                                              D.  Horizontal libration                                                              }{02346.  The first point of Aries is the point where the Sun is at ________.                                                              A.  maximum declination north                                                              B.  maximum declination south                                                              C.  0ø declination going to northerly declinations                                                              D.  0ø declination going to southerly declinations                                                              }{02348.  Under the IALA cardinal system, a mark with a quick light showing 9 flashes every 15 seconds indicates that the safest water is on the ________.                                                              A.  north side of the mark                                                              B.  west side of the mark                                                              C.  east side of the mark                                                              D.  south side of the mark                                                              }{02349.  The summer solstice is the point where the Sun is at _______________.                                                              A.  maximum declination north                                                              B.  maximum declination south                                                              C.  0ø declination going to northerly declinations                                                              D.  0ø declination going to southerly declinations                                                              }{02350.  The principal advantage of NAVTEX radio warnings is that __________.                                                              A.  they can be used by mariners who do not know Morse cod�                                                              B.  only an ordinary FM radio is necessary to receive these warnings                                                              C.  information on a given topic is only broadcast at specified times                                                              D.  they cover a broad spectrum of the radio band allowing reception on almost any type of receiver                                                              }{02352.  When a superior planet is at 90ø elongation, it is also at _________.                                                              A.  conjunction                                                              B.  opposition                                                              C.  quadrature                                                              D.  transit                                                              }{02354.  A vessel is heading magnetic east and its magnetic compass indicates a heading of 093ø.  What action should be taken to remove this error during compass adjustment?                                                              A.  If the blue ends of the magnets are to port you should raise the athwartships tray.                                                              B.  If the red ends of magnets are to port you should lower the athwartships traA.                                                              C.  If the red ends of the magnets are aft you should Dower the fore-and-aft tray.        �                                                     D.  If the blue ends of the magnets are forward you should raise the fore-and-aft tray.                                                              }�{02356.  As observed from the Earth, the angle between lines from the Earth to the Sun and the Earth to an inferior planet is known as __________.                                                              A.  elongation                                                              B.  conjunction                                                              C.  opposition                                                              D.  quadrature                                                              }{02358.  Altair is found in what constellation?                                                              A.  Hercules                                                              B.  Cygnus                                                              C.  Aquila                                                              D.  Capricorn                                                              }{02360.  What U.S. agency is responsible for NAVAREA warnings?                                                              A.  Coast Guard                                                              B.  National Oceanic and Atmospheric Administration                                                              C.  National Ocean Service                                                              D.  Defense Mapping Agency                                                              }{02362.  You have completed the magnetic compass adjustments on magnetic east and magnetic south.  The vessel is now steady on magnetic north but the compass reads 004ø.  What action should be taken?                                                              A.  Use the Flinders bar and adjust the compass until it reads 002ø                                                              B.  Use the fore-and-aft magnets and adjust the compass until it reads 000ø                                                              C.  Use the athwartships magnets and adjust the compass until it reads 002ø                                                              D.  Use the athwartships magnets and adjust the compass until it reads 000ø                                                              }{02364.  The immediate surroundings of what constellation contain the most first magnitude stars?                                                              A.  Libra                                                              B.  Cassiopeia                                                              C.  Pegasus                                                              D.  Orion                                                              }{02366.  The major problem with Moon sights is the ________________.                                                              A.  rapid changes in GHA and declination introduce errors into the calculations                                                              B.  lack of a well defined limb at certain positions in the sky                                                              C.  approximations used in the solution caused by the variable horizontal parallax                                                              D.  augmentation effect caused by the relatively short distance to the Moon                                                              }{02369.  What magnetic compass corrector(s) CANNOT be set on a heading of magnetic east or magnetic west?                                                              A.  Heeling magnet                                                              B.  Flinders bar                                                              C.  Fore-and-aft magnets                                                              D.  All of the above can be set on magnetic east or magnetic west headings.                                                              }�{02370.  In the United States, short-range radio navigational warnings are broadcast by the ____________.                                                              A.  Coast Guard                                                              B.  Corps of Engineers                                                              C.  NOAA                                                              D.  harbor master of the nearest port                                                              }{02372.  In the North Sea area, you sight a buoy showing a quick white light showing 6 flashes followed by one long flash at 15 second intervals.  Which of the four topmarks illustrated in diagram D031NG would be fitted to this buoy?                                                              A.  A                                                              B.  B                                                              C.  C                                                              D.  D                                                              }{02374.  The largest of the navigational planets is _____________.                                                              A.  Mars                                                              B.  Venus                                                              C.  Jupiter                                                              D.  Saturn                                                              }{02375.  The shortest distance between any two points on earth defines a __________.                                                              A.  small circle                                                              B.  great circle                                                              C.  rhumb line                                                              D.  hyperbola                                                              }{02376.  A large group of stars revolving around a center is known as a __________________.                                                              A.  cluster                                                              B.  shower                                                              C.  constellation                                                              D.  galaxy                                                              }{02378.  Which of the following light signals indicates thAt you may approach the lock?                                                              A.  Flashing red                                                     �        B�  Flashing amber                                                              C.  Steady amber                                                              D.  Steady green                                                              }{02379.  The winter solstice is the point where the Sun is at ______________.                                                              A.  maximum declination north                                                              B.  maximum declination south                                                              C.  0ø declination going to northerly declinations                                                              D.  0ø declination going to southerly declinations                                                              }{02380.  The navigation regulations applicable to a U.S. inland waterway can be found in the _________.                                                              A.  Notices to Mariners                                                              B.  Channel Reports                                                              C.  Sailing Directions                                                              D.  Coast Pilots                                                              }�{02382.  What causes geocentric parallax?                                                              A.  The varying distance between the Earth and Moon.                                                              B.  The change in the Moon's position relative to the stars when viewed from the Earth's surface, as compared to the Earth's center.                                                      C.  The rapid change in declination of the Moon causes a rotational oscillation of its axis.                                                              D.  The nearness of the Moon causes an apparent increase in diAmeter as its altitude increases.                                                              }{0�384. �On U.S. charts, you can tell if a named feature such as a rock (i.e. Great Eastern Rock in Block Island Sound) is submerged by the __________.                                                              A.  color of ink used to print the name                                                              B.  style of type used to print the name                                                              C.  dashed circle around the feature                                                              D.  magenta circle around the feature                                                              }{02386.  The path that the Sun appears to take among the stars is the ___________.                                                              A.  zodiac                                                              B.  Tropic of Cancer in the Northern Hemisphere                                                              C.  ecliptic                                                              D.  line of apsides                                                              }{02387.  You are on a voyage from New Orleans to Boston and navigating off the Florida coast.  You will get the greatest benefit from the Gulf Stream if you navigate __________.                                                              A.  about 5 miles east of Cape Canaveral                                                              B.  about 15 miles east of Daytona                                                              C.  along the 50-fathom curve                                                              D.  about 20 miles east of Jupiter Inlet                                                              }{02388.  The reference poinD for determination of GMT is the passage of the mean sun over what line?                                                              A.  First point of Aries                                                              B.  Observer's meridian                                                              C.  0ø longitude                                                              D.  180ø longitude                                                              }{02389.  The autumnal equinox is the point where the Sun is at __________.                                                              A.  maximum declination north                                                              B.  maximum declination south                                                              C.  0ø declination going to northerly declinations                                                              D.  0ø declination going to southerly declinations                                                              }{02390.  You are in a channel in U.S. waters near an industrial plant with a load/discharge facility for barges.  You hear a siren being sounded at the facility.  What does this indicate?                                                              A.  There is danger at the facility due to a fire or cargo release.                                                              B.  A towboat with a hazardous cargo barge is being moved to or from the facility.                                                              C.  The facility is warning a barge to shut down transfer�operations due to weather conditions (electrical storms, tornado, etc.).                                              D.  A barge at the facility has commenced loading or discharging operations.                                                              }�{02392.  The point where the Sun is at maximum declination north or south is _________________.                                                              A.  aphelion                                                              B.  perihelion                                                              C.  an equinox                                                              D.  a solstice                                                              }{02394.  A vessel is heading magnetic east and its magnetic compass indicates a heading of 093ø.  What action should be taken to remove this error during compass adjustment?                                                              A.  If the red ends of the magnets are aft, and the fore-and-aft tray is at the top, you should remove some magnets.                                                              B.  If the red ends of the magnet are aft, and the fore-and-aft tray is at the bottom, you should reverse the magnets.                                                              C.  If the red ends of the magnets are aft you should raise the fore-and-aft tray.                                                              D.  If the blue ends of the magnets are forward you should remove some magnets from the fore-and-aft tray.                                                              }{02396.  Perihelion is the point where the Sun _____________________.                                                              A.  is nearest to the Earth                                                              B.  is farthest from the Earth                                                              C.  is on the opposite side of the Earth from the Moon                                                              D.  and Moon and Earth are in line                                                              }{02399.  Which statement about the time diagram in illustration D008NG is TRUE?                                                              A.  The Greenwich date is one day later than your date.                                                              B.  The diagram is valid only if you are in the southern hemisphere.                                                              C.  The LHA of the Sun is approximately 40ø.                                                              D.  The diagram represents a morning Sun sight.                                                              }{02400.  You are in a channel in U.S. waters near an industrial plant with a load/discharge facility for barges.  You see an emergency rotating flashing light on the facility light up. What does this indicate?                                                              A.  A barge at the facility has commenced transferring a hazardous cargo.                                                              B.  A barge carrying a hazardous cargo is mooring or unmooring at the facility.                                                              C.  The facility is warning a barge to shut down transfer operations due to weather conditions (electrical storm, tornado, hurricane, etc.).                                   D.  There is danger at the facility due to a fire or cargo release.                                                              }{02402.  You have completed the magnetic compass adjustments on magnetic east and magnetic south.  The vessel is now steady on magnetic north but the compass reads 356ø.  You should now adjust the compass until it reads __________.                                                              A.  358ø                                                              B.  000ø                                                              C.  002ø                                                              D.  004ø                                                              }{02404.  The dividing meridian between zone descriptions +7 and +8 is ___________.                                                              A.  105ø00' W                                                              B.  112ø30' W                                                              C.  117ø00' W                                                              D.  120ø30' W                                                              }�{02406.  The dividing meridian between zone descriptions +4 and +5 is ________.                                                              A.  67ø30' W                                                              B.  90ø00' W                                                              C.  67ø30' E                                                              D.  75ø00' E                                                              }{02408.  What is the equivalent of 42 min. 48 sec. in arc units?                                                              A.  21ø24'                                                              B.  18ø16'                                                              C.  11ø19'                                                              D.  10ø42'                                                              }{02409.  You are approaching the first of two drawbridges that span a narrow channel. The second drawbridge is close to the first. What signals should you sound?                                                              A.  Sound the request-for-opening signal for the first bridge only, who will notify the second bridge of your approach                                                     B.  Sound the request-for-opening signal twice in succession to indicate you must pass through both bridges                                                              C.  Sound the request-for-opening signal, pause for about 10 seconds, then sound two prolonged blasts.                                                              D.� Sound the request-for-opening signal and, after the bridge acknowledges it, sound the request-for-opening signal for the second bridge.                                }{02410.  A facility used for the discharge of a cargo of a particular hazard, such as chlorine, butane or ethane, must have what to warn water traffic of an immediate danger during fire or cargo release.                                                              A.  An emergency boat and crew                                                              B.  A siren or rotating flashing light                                                 �            C.  Flashing red lights located one-half mile upstream and downstream of the facility                                                              D.  Buoys with flashing lights controlled from shore, located one-half mile upstream and downstream of the facility                                                              }{02412.  The permanent magnetism of a vessel may change in polarity due to ________________.                                                              A.  being moored for a long time on one heading                                                              B.  being struck by lighting                                                              C.  steaming from the north magnetic hemisphere to the south magnetic hemisphere                                                              D.  loading a homogenous magnetic cargo such as steel plate, iron bars, etc.                                                              }{02414.  You must construct a Mercator plotting sheet on a piece of paper measuring 20" by 28".  The area includes latitude 38ø S to 43ø S and longitude 178ø E to 175ø W.  Allow a one-half inch neat line on all sides.  What is the maximum distance between each degree of longitude that will permit the area of the plotting sheet to be drawn within the stated limitations?                                                              A.  2.6 inches                                                              B.  2.9 inches                                                              C.  3.2 inches                                                              D.  3.5 inches                                                              }�{02416.  An orange and white buoy indicating a vessel-exclusion area will be marked with what symbol?                                                              A.  Open-faced diamond                                                              B.  Diamond with a cross                                                              C.  Circle                                                              D.  Square                                                              }{02418.  While proceeding downriver, you sight a red triangular-shaped daymark on the left bank.  Under the U.S. Aids to Navigation System on the Western Rivers this is a ______.                                                              A.  special purpose signal                                                              B.  passing daymark                                                              C.  mark with no lateral significance                                                              D.  crossing daymark                                                              }{02419.  A backlash below a lock is defined as a _____________.                                                              A.  current setting your vessel on the wall                                                              B.  current setting into the lock chamber                                                              C.  an eddy working along the lower guide wall                                                              D.  current setting counterclockwise                                                              }{02420.  You are on course 355ø T and take a relative bearing of a lighthouse of 275ø.  What is the true bearing to the lighthouse?                                                              A.  080ø                                                              B.  085ø                                                              C.  280ø                                                              D.  270ø                                                              }{02422.  The dimmest stars that could be reasonably used for navigational purposes are of what magnitude?                                                              A.  First                                                              B.  Third                                                              C.  Sixth                                                              D.  TenTh                                                              }{02424.  Under the IALA-B Buoyage System, when entering from seaward a lateral system buoy to be left to starboard may display which topmark in illustration D046NG?                                                              A.  A                                                              B.  B                                                              C.  C                                                              D.  D                                                              }{02426.  You are in charge of a power-driven vessel crossing a river on the Western Rivers.  You must keep out of the way of _____________________.                                                              A.  a sail vessel descending the river                                                              B.  a power-driven vessel ascending the river                                                              C.  a vessel restricted in its ability to maneuver crossing the river                                                              �D.  Any of the above                                                              }�{02428.  If your vessel were proceeding up river (ascending), the pErt side of the channel would Be marked according to the U. S. Aids to Navigation System on the Western Rivers by _____________.                                                              A.  green can buoys                                                              B.  red can buoys                                                              C.  green nun buoys                                                              D.  red nun buoys                                                              }{02429.  The lock chamber is 600 feet X 110 feet.  Your towboat is 150 feet X 35 feet.  Which of these tows will require a double lockage?                                                              A.  A set-over single                                                              B.  4 standard barges abreast next to your boat's head and 3 jumbo abreast in the lead                                                              C.  6 jumbo (3 abreast and 2 long) with a standard on each side of your boat                                                              D.  9 jumbo barges                                                              }{02430. �You are on course 2�2ø T and take a relative bearing of a lighthouse of 025ø.  What is the true bearing to the lighthouse?                                                              A.  197ø                                                              B.  247ø                                                              C.  315ø                                                              D.  335ø                                                              }{02432.  A time diagram is a diagram of the celestial sphere as observed from above the ___________________.                                                              A.  south celestial pole                                                              B.  north celestial pole                                                              C.  observer's meridian                                                              D.  Greenwich meridian                                                              }{02434.  A vessel is heading magnetic east and its magnetic compass indicates a heading of 093ø.  What action should be taken to remove this error during compass adjustment?                                                              A.  If the red ends of the magnets are aft you should lower the fore-and-aft tray.                                                              B.  If the red ends of the magnets are forward, and the fore-and-aft tray is at the bottom, you should remove some magnets.                                                     C.  If the red ends of the magnets are to port you should raise the athwartships tray.                                                              D.  If the red ends of the magnets are to port, and the athwartships tray is at the top, you should reverse the magnets.                                                     }{02436.  Aphelion is the point where the Sun _____________________.                                                              A.  and Moon and Earth form a right angle                                                              B.  and Moon and Earth are in line                                                              C.  crosses the celestial equator                                                              D.  is farthest from the Earth                                                              }�{02437.  When daylight savings time is kept, the times of tide and current calculations must be adjusted.  One way of doing this is to _________________.                                                              A.  add 15ø to the standard meridian when calculating the time differences                                                              B.  apply no correction as the times at the reference stations are adjusted for daylight savings time                                                              C.  add one hour to the times listed for the reference stations                                                              D.  subtract one hour from the times listed for the subordinate stations                                                              }{02438.  The radar control that reduces weak echoes out to a limited distance from the ship is the __________.                                                              A.  sensitivity time control (sea-clutter control)                                                              B.  receiver gain control                                                              C.  brilliance control                                                              D.  fast time constant (differentiator)                                                              }{02439.  Which statement about the time diagram in illustration D008NG is TRUE?                                                              A.  You are in east longitude.                                                              B.  The Sun is setting for you.                                                              C.  Your date is different from the Greenwich date.                                                              D.  The GHA is approximately 160ø.                                                              }{02440.  You are on course 357ø T and take a relative bearing of a lighthouse of 180ø.  What is the true bearing to the lighthouse?                                                              A.  003ø                                                              B.  227ø                                                              C.  177ø                                                              D.  363ø                                                              }{02442.  You have completed the magnetic compass adjustments on magnetic east and magnetic south.  The vessel is now steady on magnetic north but the compass reads 004ø.  You should now adjust the compass until it reads __________.                                                              A.  356ø                                                              B.  358ø                                                              C.  000ø                                                              D.  002ø                                                              }{02444.  What is the equivalent of 0ø48' in time units?                                                              A.  2 min. 12 sec.                                                              B.  2 min. 42 sec.                                                              C.  3 min. 02 sec.                                                              D.  3 min. 12 sec.                                                              }{02446.  What is the equivalent of 47 min. 20 sec. in arc units?                                                              A.  8ø27'                                                              B.  11ø50'                                                              C.  13ø42'                                                              D.  13ø56'                                                              }�{02448.  What is the equivalent of 37 min. 32 sec. in arc units?                                                              A.  4ø47'                                                              B.  6ø38'                                                              C.  7ø41'                                                              D.  9ø23'                                                              }{02449.  You are approaching a drawbridge that will open at any time upon request.  What signal should you sound to request the bridge be opened?                                                              A.  Two short blasts                                                              B.  One short, one prolonged, one short blast                                                              C.  One prolonged, one short blast                                                              D.  Two prolonged blasts                                                              }{02450.  You are on course 180ø T and take a relative bearing of a lighthouse of 225ø.  What is the true bearing to the lighthouse?                                                              A.  045ø                                                              B.  135ø                                                              C.  180ø                                                              D.  270ø                                                              }{02452.  The permanent magnetism of a vessel may change in strength due to _________________.                                                              A.  the nature of the cargo being carried                                                              B.  changes in heading                                                              C.  major structural repair                                                              D.  Any of the above                                                              }{02454.  Illustration D037NG represents a moveable dam.  If the wickets are down and there are open weirs due to high water, what light(s) will be shown at C if the lock walls and piers are not awash?                                                              A.  One red light                                                              B.  Two red lights                                                              C.  Three red lights                                                              D.  One amber light                                                              }{02456.  An orange and white buoy marking an area where operating restrictions are in effect will be marked with what symbol?                                                              A.  Open-faced diamond                                                              B.  Diamond with a cross                                                              C.  Circle                                                              D.  Rectangle                                                              }{02458.  In the U.S. Aids to Navigation System on the Western Rivers, the light characteristic of group flashing (2) is used for lights on _______.                                                              A.  the right descending bank                                                              B.  the left descending bank                                                              C.  preferred channel buoys                                                              D.  daymarks with no lateral significant                                                              }{02459.  The controlling depth of the river is ___________.                                                              A.  the minimum depth of the river prescribed in the channel maintenance program                                                              B.  the edge of a dredged channel                                                              C.  the highest level to which the river may rise without flooding                                                              D.  the least available water in a channel which limits the draft of boats and tows                                                              }�{02460.  You are on course 344ø T and take a relative bearing of a lighthouse of 270ø.  What is the true bearing to the lighthouse?                                                              A.  016ø                                                              B.  074ø                                                              C.  090ø                                                              D.  254ø                                                              }{02462.  Under ideal viewing conditions, the dimmest star that can be seen with the unaided eye is of what magnitude?                                                              A.  First                                                              B.  Third                                                              C.  Fourth                                                              D.  Sixth                                                              }{02464.  Under the IALA-A Buoyage System, when entering from seaward a lateral system buoy to be left to port may display which topmark in illustration D046NG?                                                              A.  A                                                              B.  B                                                              C.  C                                                              D.  D                                                              }{02466.  On the Western Rivers, a vessel crossing a river must _________.                                                              A.  only keep out of the way of a power-driven vessel descending the river                                                              B.  keep out of the way of any vessel descending the river                                                              C.  keep out of the way of a power-driven vessel ascending or descending the river                                                              D.  keep out of the way of any vessel ascending or descending the river                                                              }{02468.  Under the U.S. Aids to Navigation System on the Western Rivers, the buoys marking the starboard side of the channel when going upstream will be ______________.                                                              A.  black                                                              B.  red                                                              C.  green                                                              D.  yellow                                                              }{02469.  A tow that is properly aligned to pass through a narrow opening between two bridge piers is "________________".                                                              A.  on course                                                              B.  headed fair                                                              C.  holding on                                                              D.  in shape                                                              }{02470.  You are on course 344ø T and take a relative bearing of a lighthouse of 090ø.  What is the true bearing to the lighthouse?                                                              A.  016ø                                                              B.  074ø                                                              C.  254ø                                                              D.  270ø                                                              }�{02472.  The Sun is closest to the Earth in what month?                                                              A.  October                                                              B.  July                                                              C.  April                                                              D.  January                                                              }{02474.  A vessel is heading magnetic north and its magnetic compass indicates a heading of 356ø.  What action should be taken to remove this error during compass adjustment?                                                              A.  If the blue ends of the magnets are to port, and the athwartships tray is at the top, you should remove some of the magnets.                                              B.  If the blue ends of the magnets are to starboard, and the athwartships tray is at the bottom, you should remove some magnets.                                                     C.  If the red ends of the magnets are to port, and the athwartships tray is at the bottom, you should reverse the magnets.                                                     D.  If the blue ends of the magnets are to starboard, you should raise the athwartships tray.                                                              }{02476.  At meridian transit, the diagram used by a navigator to illustrate the angles involved is based on the ____________.                                                              A.  celestial equator as observed from above the south celestial pole                                                              B.  celestial equator as observed from above the north celestial pole                                                              C.  plane of the observer's meridian                                                              D.  plane of the Greenwich meridian                                                              }{02478.  On 23 August 1981 you observe a back sight of the upper limb of the Sun as seen through the sextant's scope.  The sextant altitude (hs) is 116ø42.8'.  The height of eye is 56 feet and the index error is 2.0' on the arc.  What is the observed altitude (Ho)?                                                              A.  63ø42.0'                                                              B.  63ø38.0'                                                              C.  63ø19.4'                                                              D.  62ø49.6'                                                              }{02479.  The equation of time measures the _______________.                                                              A.  difference between local apparent time and Greenwich apparent time                                                              B.  longitude in time units                                                              C.  difference between sidereal time and local time at the Greenwich meridian                                                              D.  time between the passage of the mean sun and the apparent sun over a meridian                                                              }{02480.  You are on course 277ø T and take a relative bearing of a lighthouse of 045ø.  What is the true bearing to the lighthouse?                                                              A.  038ø                                                              B.  232ø                                                              C.  315ø                                                              D.  322ø                                                              }�{02482.  When a vessel changes course from one cardinal heading to another cardinal heading while adjusting the compass, what action should be taken?                                                              A.  The course change should be made rapidly to prevent transient induced magnetism while passing the intercardinal headings.                                                    B.  After the new heading is reached, the vessel should steam on that course for at least two minutes before the adjustment.                                                  C.  During the course change, you should gently tap the compass to remove any error caused by friction on the pivot bearing.                                                              D.  After steadying on the new heading, the compass card should be slewed by a magnet and allowed to oscillate freely to remove any gaussin error.                                 }{02484.  What is the equivalent of 1ø53' in time units?                                                              A.  3 min. 16 sec.                                                              B.  5 min. 28 sec.                                                              C.  6 min. 43 sec.                                                              D.  7 min. 32 sec.                                                              }{02486.  What is the equivalent of 23 min. 20 sec. in arc units?                                                              A.  16ø40'                                                              B.  12ø32'                                                              C.  9ø28'                                                              D.  5ø50'                                                              }{02488.  In which publication could you find information concerning the minimum lighting required for bridges on U.S. waters?                                                              A.  Chart No. 1.                                                              B.  Code of Federal Regulations                                                              C.  Mississippi River Systems Light List                                                              D.  Notice to Mariners                                                              }{02489.  You are approaching a drawbridge and must pass through during a scheduled closure period.  What signal should you sound?                                                              A.  Five short blasts                                                              B.  Two prolonged, two short blasts                                                              C.  Three prolonged blasts                                                              D.  Three short blasts, two prolonged blasts                                                              }{02490.  A vertex of the navigational triangle is NOT located at the _________.                                                              A.  elevated pole                                                              B.  celestial body                                                              C.  zenith                                                              D.  coaltitude                                                              }{02492.  A star that suddenly becomes several magnitudes brighter and then gradually fades is a __________________.                                                              A.  double star                                                              B.  variable star                                                              C.  nova                                                              D.  nebula                                                              }�{02494.  You must construct a Mercator plotting sheet on a piece of paper measuring 24" by 30".  The area includes latitude 28ø N to 35ø N and longitude 175ø E to 178ø W.  Allow a three-quarter inch neat line on all sides.  What is the maximum distance between each degree of longitude that will permit the area of the plotting sheet to be drawn within the stated limitation?                                                              A.  3.40 inches                                                              B.  3.22 inches                                                              C.  3.03 inches                                                              D.  2.91 inches                                                              }{02496.  An orange and white buoy marking a danger area will have what symbol on it?                                                              A.  Open-faced diamond                                                              B.  Diamond with a cross                                                              C.  Circle                                                              D.  Square                                                              }{02498.  The light characteristic of flashing is used in the Aids to Navigation System on the Western Rivers for lights on _____________.                                                              A.  the right descending bank                                                              B.  the left descending bank                                                              C.  preferred channel buoys                                                              D.  daymarks with no lateral significance                                                              }{02499.  The "head of the bend" is the ____________.                                                              A.  top or upstream beginning of a bend                                      �                       B.  bottom or downstream beginning of a bend                                                              C.  midpoint or center radius of a bend                                                              D.  center line or apex of a bend                                                              }{02500.  When correcting the sextant altitude to apparent altitude you are correcting for inaccuracies in the reading and __________________.                                                              A.  for inaccuracies in the reference level                                                              B.  the equivalent reading at the center of the body                                                              C.  the equivalent reading from the center of the Earth                                                              D.  the bending of the rays of light from the body                                                              }{02502.  The major factor that causes the color difference between a red star (Betelgeuse) and a blue star (Rigel) is _________________.                                                              A.  its surface temperature                                                              B.  the elevation above the horizon                                                              C.  the mass of the star                                                              D.  the contrast to nearby stars                                                              }{02504.  Under the IALA-A Buoyage System, when entering from seaward a lateral system buoy to be left to starboard may display which topmark in illustration D046NG?                                                              A.  A                                                              B.  B                                                              C.  C                                                              D.  D                                                              }�{02506.  Which is TRUE of a downbound vessel when meeting an upbound vessel on the Western Rivers?                                                              A.  She has the right of way only if she is a power-driven vessel.                                                              B.  She has the right of way only if she has a tow.                                                              C.  She does not have the right of way, since the other vessel is not crossing the river.                                                              D.  She must wait for a whistle signal from the upbound vessel.                                                              }{02508.  Normal pool elevation is the height in feet of the section of river above a dam.  This height is measured from ___________.                                                              A.  low steel on the Huey P. Long Bridge                                                              B.  mean sea level                                                              C.  the local water table                                                              D.  the minimum dam control level                                                              }{02509.  All persons or vessels within the lock area, including the lock approach channels, come under the authority of the ___________.                                                              A.  dockmaster                                                              B.  dock captain                                                              C.  lockmaster                                                              D.  lock foreman                                                              }{02510.  When correcting apparent altitude to observed altitude, you do NOT apply a correction for _____________.                                                              A.  the equivalent reading to the center of the body                                                              B.  the equivalent reading from the center of the Earth                                                              C.  the bending of the rays of light from the body                                                              D.  inaccuracies in the reference level                                                              }{02512.  In the time diagram in illustration D005NG ________.                                                              A.  you are in east longitude                                                              B.  your time is about 1000                                                              C.  your date is a day earlier than the date at Greenwich                                                              D.  you must be in the northern hemisphere for it to be accurate                                                              }{02514.  Sidereal time is NOT used ____________________.                                                              A.  as the basis for star charts                                                              B.  to enter a star finder                                                              C.  in sight reduction using Pub 249                                                              D.  in sight reductions of planet observations                                                              }{02516.  Apparent time is based on _________________.                                                              A.  a fictitious sun moving along the celestial equator                                                              B.  the visible sun moving along the ecliptic                                                              C.  the Moon's motion in relation to the Sun                                                              D.  the movement of the first point of Aries                                                              }{02518.  In low latitudes, the full Moon will always rise at about ___________.                                                              A.  sunrise                                                              B.  1200 LMT                                                              C.  sunset                                                              D.  2400 LMT                                                              }�{02519.  The standard time meridian for zone description -12 is _____________.                                                              A.  165.0ø E                                                              B.  172.5ø E                                                              C.  180.0ø                                                              D.  172.5ø W                                                              }{02520.  When correcting the sextant altitude to apparent altitude you are correcting for inaccuracies in the reference level and _______________.                                                              A.  the equivalent reading to the center of the body                                                              B.  the equivalent reading from the center of the Earth                                                              C.  for inaccuracies in the instrument                                                              D.  the bending of the rays of light from the body                                                              }{02522.  The letter H in illustration D006NG represents the ________.                                                              A.  celestial horizon                                                              B.  geoidal horizon                                                              C.  visible horizon                                                              D.  refractive horizon                                                              }{02524.  What is the equivalent of 2ø35' in time units?                                                              A.  10 min. 20 sec.                                                              B.  9 min. 10 sec.                                                              C.  7 min. 06 sec.                                                              D.  6 min. 43 sec.                                                              }{02526.  What is the equivalent of 10 min. 52 sec. in arc units?                                                              A.  0ø47'                                                              B.  1ø12'                                                              C.  2ø43'                                                              D.  3ø52'                                                              }{02527.  In the doldrums you can expect _______________.                                                              A.  steady, constant winds                                                              B.  frequent rain showers and thunderstorms                                                              C.  steep pressure gradients                                                              D.  low relative humidity                                                              }{02528.  Illustration D038NG represents a fixed C of E lock and dam.  What navigational light(s) is(are) exhibited at the position indicated by the letter A in the illustration?                                                              A.  One red light                                                              B.  Two red lights                                                              C.  Two green lights                                                              D.  No light                                                              }{02529.  A bridge over a navigable waterway is being repaired.  There is a traveller platform under the bridges deck that significantly reduces the vertical clearance.  If required by the CG district commander, how will this be indicated at night?                                                              A.  Illumination by flood lights                                                              B.  A quick flashing red light at each lower corner                                                              C.  A strobe light visible both up and downstream                                                              D.  Fixed amber lights under the extreme outer edges of the traveller                                                              }�{02530.  The distance between any two meridians measured along a parallel of latitude _________________.                                                              A.  increases in north latitude and decreases in south latitude                                                              B.  decreases as DLO increases                                                              C.  increases with increased latitude                                                              D.  decreases with increased latitude                                                              }{02532.  You must construct a Mercator plotting sheet on a piece of paper measuring 28" by 32".  The area includes latitude 32ø S to 39ø S and longitude 005ø E to 003ø E.  Allow a one-half inch neat line on all sides.  What is the maximum distance between each degree of longitude that will permit the area of the plotting sheet to be drawn within the stated limitations?                                                              A.  3.38 inches                                                              B.  3.62 inches                                                              C.  3.79 inches                                                              D.  3.95 inches                                                              }{02534.  You must construct a Mercator plotting sheet on a piece of paper measuring 26" by 30".  The area includes latitude 28ø15' N to 35ø45' N and longitude 174ø00' E to 178ø00' W. Allow a three-quarter inch neat line on all sides.  What is the maximum distance between each degree of longitude that will permit the area of the plotting sheet to be drawn within the stated limitation?                                                              A.  2.76 inches                                                              B.  2.92 inches                                                              C.  3.06 inches                                                              D.  3.19 inches                                                              }{02536.  A revised print of a chart is made ___________________.                                                              A.  after every major hydrographic survey of the area covered by the chart                                                              B.  when there are numerous corrections to be made or the corrections are extensive                                                              C.  when a low-stock situation occurs and minor corrections are made                                                              D.  every two years to update the magnetic variation information                                                              }{02538.  The light characteristic of composite group flashing (2 + 1) is used in the Aids to Navigation System on the Western Rivers for lights on _____________.                                                              A.  the right descending bank                                                              B.  the left descending bank                                                              C.  preferred channel buoys                                                              D.  daymarks with no lateral significance                                                              }{02539.  Under the IALA cardinal system, a mark with quick white light showing 3 flashes every 10 seconds indicates that the safest water in the area is on the ___________.                                                              A.  north side of the mark                                                              B.  west side of the mark                                                              C.  east side of the mark                                                              D.  south side of the mark                                                              }�{02540.  The distance between any two meridians measured along a parallel of latitude and expressed in miles is the _____________.                                                              A.  difference in longitude                                                              B.  mid-longitude                                                              C.  departure                                                              D.  meridian angle                                                              }{02542.  What magnetic compass corrector(s) CANNOT be set while the vessel is on a heading of magnetic north or magnetic south?                                                              A.  Athwartships magnets                                                              B.  Heeling magnet                                                              C.  Flinders bar                                                              D.  All of the above can be set on magnetic north or magnetic south headings.                                                              }{02544.  At McAlpine L & D, normal upper pool elevation is 420.0 feet MSL, equal to 12.0 feet on the upper gage.  The vertical clearance at the Clark Memorial Highway bridge is 72.6 feet above normal pool.  What is the clearance if the gage reads 27.2 feet?                                                              A.  25.4 feet                                                              B.  57.4 feet                                                              C.  60.6 feet                                                              D.  72.6 feet                                                              }{02546.  A structure, usually made of stone ore cement pilings which extend from the bank at approximately right angles to the current is called a ____________.                                                              A.  dike                                                              B.  revetment                                                              C.  cutoff                                                              D.  crib                                                              }{02548.  On the Mississippi River, gage zero is the gage reading measured from the ____________.                                                              A.  National Geodetic Vertical Datum                                                              B.  low water reference plane                                                              C.  the lowest recorded river depth                                                              D.  the highest recorded river depth                                                              }{02549.  Corps of Engineer locks monitor which frequency for initial calls to the locks?                                                              A.  156.6 MHz (channel 12)                                                              B.  156.65 MHz (channel 13)                                                              C.  156.7 MHz (channel 14)                                                              D.  156.8 MHz (channel 16)                                                              }{02560.  A plane that cuts the Earth's surface at any angle and passes through the center will always form _______________.                                                              A.  the equator                                                              B.  a great circle                                                              C.  a small circle                                                              D.  a meridian                                                              }�{02562.  In the time diagram in illustration D005NG __________.                                                              A.  the GHA of the Sun is approximately 330ø                                                              B.  your date is one day later than the date at Greenwich                                                              C.  the LHA of the Sun is approximately 120ø                                                              D.  you are in west longitude                                                              }{02566.  When the time is based on the movement of the visible Sun along the ecliptic the tIme is known as _______________.                                                              A.  real time                                                              B.  visible time                                                              C.  apparent time                                                              D.  mean time                              �                               }{02569.  The mean sun used to measure time moves ___________________.                                                              A.  along the ecliptic at 15ø per hour                                                              B.  along the celestial equator at 15ø per day                                                              C.  along the ecliptic at 15ø per day                                                              D.  along the celestial equator at 15ø per hour                                                              }{02570.  A plane that cuts the Earth's surface and passes through the poles will always form _________________.                                                              A.  the equator                                                              B.  a loxodromic curve                                                              C.  a small circle                                                              D.  a meridian                                                              }{02572.  The dividing meridian between zone descriptions -4 and -5 is ________.                                                              A.  60ø00' E                                                              B.  67ø30' E                                                              C.  75ø00' E                                                              D.  60ø00' W                                                              }{02574.  What is the equivalent of 2ø52' in time units?                                                              A.   9 min. 23 sec.                                                              B.  1� min. 28 sec.                                                              C.  11 min. 56 sec.                                                              D.  12 min. 18 sec.                                                              }{02576.  What is the equivalent of 8 min. 56 sec. in arc units?                                                              A.  0ø28'                                                              B.  0ø46'     �                                                        C.  1ø12'                                                          �   D.  2ø14'                                                              }{02578.  You must draw a plotting sheet covering latitudes 49ø N to 53ø N and longitudes 179ø E to 178ø W.  If the distance between latitude 49ø N to 53ø N is 16 inches, what is the distance between the meridians of 1ø of longitude?                                                              A.  2.12 inches                                                              B.  2.33 inches                                                              C.  2.56 inches                                                              D.  2.81 inches                                �               �             }�{02579.  A phase correction may be applicable to correct the sextant altitude correction of ________________.                                                              A.  any star                                                              B.  the Sun                                                              C.  third magnitude stars only                                                              D.  some planets                                                              }{02580.  The angle at the pole measured through 180ø from the prime meridian to the meridian of a point is known as ___________.                                                              A.  the departure                                                              B.  the polar arc                                                              C.  longitude                                                              D.  Greenwich hour angle                                                              }�{02582.  You must construct a Mercator plotting sheet on a piece of paper measuring 32" by 36".  The �rea includes latitude 31ø S to 37ø S and longitude 005ø W to 002ø E.  All�w a three-q�arter inch neat line on all sides.  What is the maximum distance between each degree of longitude that will permit the area of the plotting sheet t� be drawn within the stated limitations?                                                              A.  4.00 inches                                                              B.  4.11 inches                                                              C.  4.25 inches                                                              D.  4.36 inches                                                              }{02583.  You are in the Northern Hemisphere and a tropical wave is located 200 miles due west of your position.  Where will the wave be located 24 hours later?                                                              A.  In the same place                                                              B.  Closer and to the west                                                              C.  Closer and to the east                                                              D.  Farther away to the west                                                              }{02584.  You must construct a Mercator plotting sheet on a piece of paper measuring 30" by 36".  The area includes latitude 30ø45' S to 37ø15' S and longitude 004ø00' E to 005ø00' W. Allow a one inch neat line on all sides.  What is the maximum distance between each degree of longitude that will permit the area of the plotting sheet to be drawn within the stated limitation?                                                              A.  3.09 inches                                                              B.  3.22 inches                                                              C.  3.41 inches                                                              D.  3.58 inches                                                              }{02586.  A chart has extensive corrections to be made to it. When these are made and the chart is again printed, the chart issue is a _____________.                                                              A.  first edition                                                              B.  new edition                                                              C.  revised edition                                                              D.  reprint                                                              }{02587.  Given are the courses and speeds of 4 vessels. The navigator of which vessel would be required to know the actual time of meridian transit in order to take an accurate observation at LAN?                                                              A.  C 166ø T, Sp 24 knots                                                              B.  C 013ø T, Sp 7 knots                                                              C.  C 291ø T, Sp 25 knots                                                              D.  C 112ø T, Sp 4 knots                                                              }�{02588.  You are approaching an open drawbridge and sound the proper signal.  You receive no acknowledgment from the bridge. What action should you take?                                                              A.  Approach with caution and proceed through the open draw                                                              B.  Approach under full control to a position no closer than 400 yards from the bridge and await a signal from the bridge.                                                              C.  Hold in the channel as a vessel is closing the bridge from the other direction                                                              D.  Resound the opening signal and do not pass through the bridge until signals have been exchanged                                                              }{02589.  Under the IALA cardinal system, a mark with a quick white light showing 6 flashes followed by one long flash indicates that the safest water is on the ___________.                                                              A.  north side of the mark                                                              B.  west side of the mark                                                              C.  east side of the mark                                                              D.  south side of the mark                                                              }{02590.  A plane perpendicular to the polar axis will never form what line on the Earth's surface?                                                              A.  Great circle                                                              B.  Equator                                                              C.  Small circle                                                              D.  Meridian                                                              }{02592.  A deadhead is a(n) _____________.                                                              A.  tree or log awash in a nearly vertical position                                                              B.  crew member who refuses to work                                                              C.  upstream end of a land wall                                                              D.  buoy that is adrift                                                              }{02594.  At McAlpine L & D, normal upper pool elevation is 420.0 feet MSL, equal to 12.0 feet on the upper gage.  The vertical clearance at the Clark Memorial Highway bridge is 72.6 feet above normal pool.  What is the clearance if the gage reads 10.6 feet?                                                              A.  84.6 feet                                                              B.  83.2 feet                                                              C.  74.0 feet                                                              D.  62.0 feet                                                              }{02596.  The abbreviation L.W.R.P. on the navigation maps means ___________.                                                              A.  low water reference plane                                                              B.  low winter runoff point                                                              C.  least water river plane                                                              D.  land wall reference point                                                              }{02598.  A vessel is proceeding downstream in a narrow channel on the Western Rivers when another vessel is sighted moving upstream.  Which vessel has the right of way?                                                              A.  The vessel moving upstream against the current.                                                              B.  The vessel moving downstream with a following current.                                                              C.  The vessel located more towards the channel centerline.                                                              D.  The vessel with the least amount of maneuverability.                                                              }�{02600.  A parallel of latitude other than the equator is a _______________.                                                              A.  great circle                                                              B.  loxodromic curve                                                              C.  small circle                                                              D.  gnomonic curve                                                              }{02602.  The lunar day is also known as the __________________.                                                              A.  lunitidal interval                                                              B.  vulgar establishment of the port                                                              C.  nodal day                                                              D.  tidal day                                                              }{02604.  A sidereal day is approximately how much shorter than a solar day?                                                              A.  4 minutes                                                              B.  8 minutes                                                              C.  12 minutes                                                              D.  16 minutes                                                              }{02606.  The measurement of local time is based on the passage of the Sun over the _________________.                                                              A.  upper branch of the observer's meridian                                                              B.  lower branch of the observer's meridiAn                                                              C.  upper branch of the Greenwich meridian                                                              D.  lower branch of the Greenwich meridian                                                              }{02609.  The letter A in illustration D006NG represents the ________.                                                              A.  geoidal horizon                                                              B.  celestial horizon                                                              C.  visible horizon                                                              D.  sensible horizon                                                              }{02610.  A line on the Earth parallel to the equator is a _______________.                                                              A.  gnomonic curve                                                              B.  small circle                                                              C.  meridian                                                              D.  great circle                                                              }{02612.  The dividing meridian between zone descriptions -7 and -8 is __________.                                                              A.  112ø30' E                                                              B.  118ø30' E                                                              C.  120ø00' E                                                              D.  116ø30' W                                                              }{02614.  What is the equivalent of 4ø36' in time units?                                                              A.  9 min. 12 sec.                                                              B.  14 min. 36 sec.                                                              C.  15 min. 36 sec.                                                              D.  18 min. 24 sec.                                                              }�{02616.  What is the equivalent of 4 min. 04 sec. in arc units?                                                              A.  60ø16'                                                              B.  8ø08'                                                              C.  2ø08'                                                              D.  1ø01'                                                              }{02618.  You must draw a plotting sheet covering latitudes 38ø N to 43ø N and longitudes 179ø E to 178ø W.  If the distance between each degree of longitude is 5 inches, what is the distance between latitude 38ø N and latitude 43ø N?                                                              A.  29.0 inches                                                              B.  29.6 inches                                                              C.  32.1 inches                                                              D.  32.8 inches                                                              }{02619.  In low latitudes, a first quarter Moon will always rise at about ______________.                                                              A.  sunrise                                                              B.  1200 LMT                                                              C.  sunset                                                              D.  2400 LMT                                                              }{02620.  The navigator is concerned with three systems of coordinates.  Which system is not of major concern?                                                              A.  Terrestrial                                                              B.  Ecliptic                                                              C.  Celestial horizon                                                              D.  Celestial equator                                                              }{02624.  You must construct a Mercator plotting sheet on a piece of paper measuring 30" by 32".  The area includes latitudes 31ø10' S to 37ø40' S and longitudes 007ø00' W to 001ø00' E. Allow a one-half inch neat line on all sides.  What is the maximum distance between each degree of longitude that will permit the area of the plotting sheet to be drawn within the stated limitation?                                                              A.  3.69 inches                                                              B.  3.52 inches                                                              C.  3.38 inches                                                              D.  3.26 inches                                                              }{02626.  What information is found in the chart title?                                                              A.  Date of the first edition                                                              B.  Date of the edition and, if applicable, the revision                                                              C.  Information on the sounding datum                                                              D.  Information on which IALA buoyage system applies                                                              }{02628.  A drawbridge may use visual signals to acknowledge a vessel's request to open the draw.  Which of the following signals does NOT indicate that the draw will be opened immediately?                                                              A.  A flashing amber light                                                              B.  A fixed red light                                                              C.  A white flag raised and lowered vertically                                                              D.  A flashing white light                                                              }�{02629.  Under the IALA Buoyage Systems, which topmark in illustration D022NG is used on a special mark?                                                              A.  A                                                              B.  B                                                              C.  C                                                              D.  D                                                              }{02630.  In the celestial equator system of coordinates what is NOT equivalent to the longitude of the Earth system of coordinates?                                                              A.  SHA                                                              B.  t                                                              C.  LHA                                                              D.  Zn                                                              }{02631.  The magnitude of three stars is indicated.  Which star is the brightest?                                                              A.  Canopus - 0.9                                                              B.  Vega + 0.1                                                              C.  Antares + 1.2                                                              D.  Cannot be determined; magnitude indicates size not brightness                                                              }{02632.  A section of the river that is narrower than usual and is often navigable from bank to bank is a _______________.                                                              A.  chute                                                              B.  stabilized channel                                                              C.  slough                                                              D.  navigable pass                                                              }{02634.  Under the U.S. Aids to Navigation System on the Western Rivers, a preferred channel buoy is _______________.                                                              A.  horizontally-banded red and green                                                              B.  vertically-striped red and white                                                              C.  solid red                                                              D.  solid green                                                              }{02636.  You are ascending a river and exchanging navigational information via radiotelephone with a descending vessel. If the descending vessel advises you to "watch for the set" above point X, what would you expect to encounter above point X?                                                              A.  An increase in current velocity                                                              B.  Slack water                                                              C.  Shallow water                                                              D.  A sideways movement of your vessel                                                              }{02638.  A vessel crossing a river on the Western Rivers has the right of way over _______________.                                                              A.  vessels ascending the river                                                              B.  vessels descending the river                                                              C.  all vessels ascending and descending the river                                                              D.  None of the above                                                              }�{02639.  Under the U. S. Aids to Navigation System used on the Western Rivers, aids to navigation lights on the right descending bank show _________.                                                              A.  white or green lights                                                              B.  white or red lights                                                              C.  green lights only                                                              D.  white lights only                                                              }{02640.  In the celestial equator system of coordinates what is the equivalent to the meridians of the Earth system of coordinates?                                                              A.  Horizon                                                              B.  Hour circles                                                              C.  Vertical circles                                                              D.  Parallel of declination                                                              }{02642.  Local sidereal time is equal to the ______________.                                                              A.  GHA of Aries minus 180ø                                                              B.  SHA of Aries                                                              C.  LHA of Aries                                                              D.  right ascension of Aries plus 180ø                                                              }{02644.  The sidereal day begins _____________________.                                                              A.  when the sun is over the first point of Aries                                                              B.  when the first point of Aries is over 180ø longitude                                                              C.  when the first point of Aries is over the upper branch of the reference meridian                                                              D.  at 0000 on 1 January (Sidereal Date)                                                              }{02646.  During daylight savings time the meridian used for determining the time is located farther _______________.                                                              A.  east                                                              B.  west                                                              C.  east in west longitude and west in east longitude                                                              D.  west in west longitude and east in east longitude                                                              }{02648.  The 3-cm radar as compared to a 10-cm radar with similar specifications will ____________.                                                              A.  give better range performance in rain, hail, etc.                                                              B.  display small targets in a mass of dense sea clutter at a greater range                                                              C.  have less sea return in choppy rough seas                                                              D.  display a more maplike presentation for inshore navigation                                                              }{02649.  The letter C in illustration D006NG represents the ________.                                                              A.  geoidal horizon                                                              B.  celestial horizon                                                              C.  visible horizon                                                              D.  sensible horizon                                                              }{02650.  In the celestial equator system of coordinates what is equivalent to the colatitude of the Earth system of coordinates?                                                              �A.  Coaltitude                                                           �  B.  Zenith distance                                                              C.  Polar distance                                                              D.  Declination                                                              }�{02651.  Low pressure disturbances which travel along the intertropical convergence zone are called _____________.                                                              A.  tropical waves                                                              B.  tropical disturbances                                                              C.  permanent waves                                                              D.  tidal waves                                                              }{02652.  The dividing meridian between zone descriptions -10 and -11 is ________.                                                              A.  135ø30' E                                                              B.  145ø00' E                                                              C.  150ø00' E                                                              D.  157ø30' E                                                              }{02654.  What is the equivalent of 5ø54' in time units?                                                              A.  20 min. 16 sec.                                                              B.  23 min. 36 sec.                                                              C.  25 min. 54 sec.                                                              D.  30 min. 27 sec.                                                              }{02656.  What is the equivalent of 0 min. 16 sec. in arc units?                                                              A.  0ø32'                                                              B.  0ø16'                                                              C.  0ø04'                                                              D.  0ø01'                                                              }{02658.  You must draw a plotting sheet covering latitudes 45ø N to 49ø N and longitudes 179ø E to 178ø W.  If the distance between each degree of longitude is 5 3/4 inches, what is the distance between latitude 45ø N and latitude 49ø N?                                                              A.  33.1 inches                                                              B.  33.3 inches                                                              C.  33.6 inches                                                              D.  33.9 inches                                                              }{02660.  In the celestial equator system of coordinates what is equivalent to the longitude of the Earth system of coordinates?                                                              A.  Zenith distance                                                              B.  Azimuth angle                                                              C.  Declination                                                              D.  Greenwich hour angle                                                              }{02662.  You must construct a Mercator plotting sheet on a piece of paper measuring 24" by 28".  The area includes latitude 37ø S to 42ø S and longitude 175ø E to 179ø W.  Allow a one inch neat line on all sides.  What is the maximum distance between each degree of longitude that will permit the area of the plotting sheet to be drawn within the stated limitations?                                                              A.  3.33 inches                                                              B.  3.41 inches                                                              C.  3.67 inches                                                              D.  3.82 inches                                                              }�{02664.  The Light List shows a lighted aid to navigation on the right bank.  This means that the light can be seen on the left side of a vessel _______________.                                                              A.  crossing the river                                                              B.  descending the river                                                              C.  ascending the river                                                              D.  proceeding towards sea                                                              }{02666.  The following boats are approaching a lock.  Which has priority for locking?                                                              A.  An 85-foot yacht                                                              B.  Corps of Engineer towboat running empty-headed                                                              C.  "Delta Queen" (passenger vessel)                                                              D.  An integrated chemical tow                                                              }{02668.  You are approaching a drawbridge and have sounded the request-for-opening signal.  The bridge has responded with five short blasts.  What reply should you sound?                                                              A.  None; No reply is required                                                              B.  Five short blasts                                                              C.  Two prolonged blasts                                                              D.  One prolonged, one short blast                                                              }{02669.  Under the IALA Buoyage System, which topmark in illustration D023NG will be displayed on a safe water mark?                                                              A.  A                                                              B.  B                                                              C.  C                                                              D.  D                                                              }{02670.  The angle that is measured westward from the first point of Aries to the hour circle of the body along the celestial equator is the _________________.                                                              A.  Greenwich sidereal angle                                                              B.  local sidereal time                                                              C.  sidereal hour angle                                                              D.  azimuth angle                                                              }{02673.  A bluff bar is a bar ___________________.                                                              A.  extending out from a bluff alongside the river                                                              B.  that tends to give a false indication of its position                                                              C.  that has a sharp drop off into deep water                                                              D.  that is perpendicular to the current                                                              }{02674.  In the U.S. Aid to Navigation System on the Western Rivers, a preferred channel buoy to be left to port while proceeding downstream will ________.                                                              A.  have the upper band red                                                              B.  show a red or white light if lighted                                                              C.  have a characteristic of composite group flashing if lighted                                                              D.  All of the above                                                              }�{02676.  The place where a channel moves from along one bank of the river over to the other bank of the river is called a _____________.                                                              A.  draft                                                              B.  cutoff                                                              C.  draw                                                              D.  crossing                                                              }{02678.  A vessel crossing a river on the Western Rivers, must keep out of the way of a power-driven vessel _______________.                                                              A.  descending the river with a tow                                                              B.  ascending the river with a tow                                                              C.  ascending the river without a tow                                                              D.  All of the above                                                              }{02679.  Under the U.S. Aids to Navigation System on the Western Rivers, a daymark on the right descending bank will ________.                                                              A.  be green                                                              B.  have an odd number                                                              C.  indicate the gage reading                                                              D.  have yellow retroreflective markings                                                              }{02680.  The angle measured eastward from the vernal equinox along the celestial equator often expressed in time units is the ___________________.                                                              A.  Greenwich sidereal time                                                              B.  right ascension                                                              C.  local sidereal time                                                              D.  sidereal hour angle                                                              }{02682.  Sidereal time is used by navigators when ________________.                                                              A.  used with the equation of time                                                              B.  used in the form of LHA Aries                                                              C.  calculating the time of moonrise                                                              D.  determining local apparent time                                                              }{02684.  The maximum difference between mean time and apparent time is __________.                                                              A.  equal to the longitude expressed in time units                                                              B.  about 16 minutes                                                              C.  the difference between the GHA of mean sun and the first point of Aries                                                              D.  15ø of arc                                                              }{02686.  The standard time meridian for description +12 is ____________.                                                              A.  172.5ø E                                                              B.  180.0ø                                                              C.  172.5ø W                                                              D.  165.0ø W                                                              }{02688.  The 10-cm radar as compared to a 3-cm radar of similar specifications will ____________.                                                              A.  be more suitable for river and harbor navigation                                                              B.  provide better range performance on low lying targets during good weather and calm seas                                                              C.  have a wider horizontal beam width                                                              D.  have more sea return during rough sea conditions                                                              }�{02689.  The letter D in illustration D006NG represents __________.                                                              A.  geometrical horizon                                                              B.  visible horizon                                                              C.  celestial horizon                                                              D.  sensible horizon                                                              }{02690.  Right ascension is primarily used by the navigator for __________.                                                              A.  calculating amplitudes                                                              B.  calculating great circle sailings by the Agiton method                                                              C.  entering the Air Navigation Tables (Selected Stars) Pub 249                                                              D.  plotting on star finders                                                              }{02692.  The dividing meridian between zone descriptions -2 and -3 is _____________.                                                              A.  15ø30' E                                                              B.  30ø00' E                                                              C.  37ø30' E                                                              D.  45ø00' E                                                              }{02694.  What is the equivalent of 10ø48' in time units?                                                              A.  2 min. 39 sec.                                                              B.  20 min. 12 sec.                                                              C.  43 min. 12 sec.                                                              D.  50 min. 12 sec.                                                              }{02696.  You must draw a plotting sheet covering latitudes 52ø S to 56ø S and longitudes 179ø W to 175ø E.  If the distance between latitude 52ø S to 56ø S is 24 inches, what is the distance between the meridians of 1ø of longitude?                                                              A.  3.2 inches                                                              B.  3.5 inches                                �                             C.  4.0 inches                                                              D.  4.2 inches                                                              }{02698.  You must draw a plotting sheet covering latitudes 38ø N to 41ø N and longitudes 179ø E to 178ø W.  If the distance between each degree of longitude is 4 inches, what is the distance between latitude 38ø N and latitude 41ø N?                                                              A.  15.00 inches                                                              B.  15.49 inches                                                              C.  15.75 inches                                                              D.  16.25 inches                                                              }{02700.  In the horizon system of coordinates what is equivalent to the meridian angle of the celestial equator system?                                                              A.  Azimuth angle                                                              B.  Zenith distance                                                              C.  Colatitude                                                              D.  Altitude                                                              }�{02702.  You must draw a plotting sheet covering latitudes 46ø N to 48ø N and longitudes 179ø E to 178ø W.  If the distance between each degree of longitude is 2 7/8 inches, what is the distance between latitude 46ø N and 48ø N?                                                              A.  8.4 inches                                                              B.  8.1 inches                                                              C.  7.9 inches                                                              D.  7.7 inches                                                              }{02703.  What publication indicates the HYDROLANTS or HYDROPACS issued since the previous working day?                                                              A.  Broadcast Notice to Mariners                                                              B.  Local Notice to Mariners                                                              C.  Daily Memorandum                                                              D.  Summary of Corrections                                                              }{02704.  The Light List shows a lighted aid to navigation on the right bank.  This means that the light can be seen on the right side of a vessel _____________.                                                              A.  proceeding from seaward                                                              B.  crossing the river                           �                                  C.  ascending the river                                                              D.  descending the river                                                  �           }{02706.  The following types of vessels are awaiting lockage on the�upper Mississippi.  Which type of vessel is normally passed through the lock first?                                                              A.  Pleasure craft                                                              B.  Commercial towboats                                                              C.  Commercial passenger vessels                                                              D.  Commercial fishing vessels                                                              }{02708.  You are approaching a drawbridge and have sounded the proper whistle signal requesting it to open.  You hear a signal of one prolonged and one short blast from the bridge.  What action should you take?                                                              A.  Anchor or use an alternate route because the bridge is out of service for an extended period of time.                                                              B.  Approach to a point not closer than 400 yards from the bridge and await further signals.                                                              C.  Hold in the channel as the bridge will open within 15 minutes.                                                              D.  Approach under full control to pass through the bridge.                                                              }{02709.  Under the IALA-B Buoyage System, when entering from seaward a lateral system buoy to be left to port may display which topmark in illustration D046NG?                                                              A.  A                                                              B.  B                                      �                       C.  C                                                              D.  D                                                              }{02710.  In the horizon system of coordinates what is equivalent to the local hour angle of the celestial equator system?                                                              A.  Altitude                                                              B.  Azimuth                                                              C.  Zenith distance                                                              D.  Colongitude                                           �                  }�{02712&  A bold reef is a reef ____________.                                                              A.  with part of it extending above the water                                                              B.  that can be detected by water turbulence                                                              C.  that drops off sharply                                                              D.  perpendicular to the current                                                              }{02714.  A current moving across a lock entrance toward the river or toward the dam is called a(n) _________.                                                              A.  cutoff                                                              B.  outdraft                                                              C.  lockwash                                                              D.  springpool                                                              }{02716.  Under the U.S. Aids to Navigation System on the Western Rivers, passing daymarks on the left descending bank are ________.                                                              A.  green squares                                                              B.  green diamonds                                                              C.  red diamonds                                                              D.  red triangles                                                              }{02718.  A power-driven vessel operating in a narrow channel, with a following current, on the Western Rivers, is meeting an upbound vessel.  Which statement is TRUE?                                                              A.  The downbound vessel has the right-of-way.                                                              B.  The downbound vessel must initiate the required maneuvering signals.                                                              C.  The downbound vessel must propose the manner and place of passage.                                                              D.  All of the above                                                              }{02719.  Under the U.S. Aids to Navigation System on the Western Rivers, passing daymarks on the right descending bank are __________.                                                              A.  red diamond-shaped panels with red reflector borders                                                              B.  red triangular-shaped panels with red reflector borders                                                              C.  green square-shaped panels with green reflector borders                                                              D.  green triangular-shaped panels with green reflector borders                                                              }{02720.  When pushing barges ahead close to a steep revetment where there is no current, which of the following is MOST likely to occur?                                                              A.  The stern of the towboat will tend to sheer away from the revetment.                                                              B.  Your speed over the ground will increase.                                                              C.  The head of the tow will tend to sheer away from the revetment.                                                              D.  All of the above                                                              }{02722.  The paths of intended travel between three or more points is the _______________.                                                              A.  course                                                              B.  track                                                              C.  bearing                                                              D.  course over the ground                                                              }{02724.  What condition indicates that your radar needs maintenance?                                                              A.  Serrated range rings                                                              B.  Indirect echoes                                                              C.  Multiple echoes                                                              D.  Blind sector                                                              }�{02726.  A daymark used as a special mark is indicated by what letter in illustration D045NG?                                                              A.  A                                                              B.  B                                                              C.  C                                                              D.  D                                                              }{02729.  While navigating in fog off a coastline of steep cliffs, you hear the echo of the ships fog horn 5.5 seconds after the signal was sounded.  What is the distance to the shore?                                                              A.  1275 yards                                                              B.  1150 yards                                                              C.  1000 yards                                                              D.   825 yards                                                              }{02730.  When attempting an upstream landing while pushing empty barges ahead in a hard onshore wind, the approach is best made _______________.                                                              A.  with bow out, stern in                                                              B.  with bow in, stern out                                                              C.  parallel to the dock, as close in as possible                                                              D.  parallel to the dock, as far out as possible                                                              }{02737.  A lateral system buoy displaying a quick light ____________.                                                              A.  should be passed close aboard on either side                                                              B.  indicates that special caution is required                                                              C.  is used at a channel bifurcation or junction                                                              D.  is painted with red and white vertical stripes                                                              }{02738.  While navigating in fog off a coastline of steep cliffs, you hear the echo of the ship's fog horn 3 seconds after the signal was sounded.  What is the distance to the shore?                                                              A.  1100 yards                                                              B.   872 yards                                                              C.   550 yards                                                              D.   792 yards                                                              }{02739.  A daymark used to indicate the starboard side of the channel when approaching from seaward will have the shape indicated by what letter in illustration D045NG?                                                              A.  A                                                              B.  B                                                              C.  C                                                              D.  D                                                              }{02740.  When one upbound vessel is overtaking another vessel and both are pushing a tow ahead, what reaction may you expect?                                                              A.  Both towheads will tend to drift apart, and the overtaking vessel will be slowed down.                                                              B.  Both towheads will tend to drift together, and the overtaking vessel will be slowed down.                                                              C.  Both towheads will tend to drift apart, and the overtaken vessel will be slowed down.                                                              D.  Both towheads will tend to drift together, and the overtaken vessel will be slowed down.                                                              }�{02741.  A general chart could have a scale of ____________.                                                              A.  1:200,000                                                              B.  1:1,000,000                                                              C.  1:50,000                                                              D.  not more than 1:25,000                                                              }{02742.  A white diamond daymark with an orange border is used ____.                                                              A.  as a special mark                                                              B.  for information or regulatory purposes                                                              C.  for a lateral aid on the intracoastal waterway                                                              D.  as a safe water mark                                                              }{02744.  The standard atmospheric pressure measured in inches of mercury is _____________.                                                              A.  29.92                                                              B.  500.0                                                              C.  760.0                                                              D.  1013.2                                                              }{02746.  What is used to measure wind velocity?                                                              A.  Psychrometer                                                              B.  Barometer                                                              C.  Wind sock                                                              D.  Anemometer                                                              }{02748.  You are inbound in a channel marked by a range.  The range line is 309ø T.  You are steering 306ø T and have the range in sight as indicated in illustration D047NG.  The range continues to open.  What actions should you take?                                                              A.  Alter course to the right to 309ø T or more to bring the range in line                                                              B.  Continue on course but be ready to come right if the range continues to open                                                              C.  Alter course to the left until the range is in line then alter course to 309ø T                                                              D.  Come left until the range closes then steer to the left of 306ø T                                                              }{02750.  When pushing a tow and approaching barges tied off to the shore, you should _______________.                                                              A.  increase speed so you will pass faster                                                              B.  decrease speed while passing so you won't create a suction                                                              C.  do nothing different as the barges should be tied off properly                                                              D.  move to the opposite side of the channel from the barges and increase speed                                                              }{02752.  A daymark used to indicate the safe water in a channel will have the shape indicated by what letter in illustration D045NG?                                                              A.  A                                                              B.  B                                                              C.  C                                                              D.  D                                                              }�{02760.  You are pushing a tow ahead, at high speed, near the right hand bank of a canal.  The forces affecting your towboat and tow will tend to ______.                                                              A.  push both the head of the tow and the stern of the towboat away from the right hand bank                                                              B.  push the head of the tow away from, and pull the stern of the towboat into, the right hand bank                                                              C.  pull both the head of the tow and the stern of the towboat into the right hand bank                                                              D.  pull the head of the tow into, and push the stern of the towboat away from, the right hand bank                                                              }{02762.  If you take a bearing of 176ø to a lighthouse, what other bearing of another prominent object would give the best fix?                                                              A.  079ø                                                              B.  151ø                                                              C.  176ø                                                              D.  292ø                                                              }{02764.  You are in a channel inbound from sea.  A daymark used to mark a channel junction when the preferred channel is to port will have the shape indicated by what letter in illustration D045NG?                                                              A.  A                                                              B.  B                                                              C.  C                                                              D.  D                                                              }{02766.  In low latitudes, the high(s) of the diurnal variation of pressure occur(s) at ___________________.                                                              A.  noon                                                              B.  noon and midnight                                                              C.  1000 and 2200                                                              D.  1600                                                              }{02768.  What type of daymark is used to mark the starboard side of the channel when entering from sea?                                                              A.  Red and white octagon                                                              B.  Black and white diamond                                                              C.  Red triangle                                                              D.  Green square                                                              }{02769.  If your vessel must pass through a draw during a scheduled closure period, what signal should you sound to request the opening of the draw?                                                              A.  One prolonged blast followed by one short blast                                                              B.  Three short blasts                                                              C.  One prolonged blast followed by three short blasts                                                              D.  Five short blasts                                                              }{02770.  What is most likely to happen when you push a tow into an eddy?                                                              A.  Going upstream you will make better speed with no danger involved.                                                              B.  Going downstream you will be slowed down.                                                              C.  There is a good chance you will break up the tow.                                                              D.  No danger exists as long as you steer a straight course through the eddy.                                                              }�{02772.  The direction in which a vessel should be steered between two points is the _________________.                                                              A.  course                                                              B.  heading                                                              C.  bearing                                                              D.  course over the ground                                                              }{02774.  Your radar is set on a true motion display.  Which of the following will NOT appear to move across the PPI scope?                                                              A.  Echoes from a buoy                                                              B.  Own ship's marker                                                              C.  Echo from a ship on the sAme course at the same speed                                                              D.  Echo from a ship on a reciprocal course at the same speed                                                              }{02776.  For a well made and well maintained sextant, the maximum value of what correction is usually so small that it can be ignored?                                                              A.  Personal correction                                                              B.  Instrument correction                                                              C.  Phase                                                              D.  Dip correction                                                              }{02777.  A sailing chart could have a scale of __________.                                                              A.  not more than 1:25,000                                                              B.  1:35,000                                                              C.  1:100,000                                                              D.  1:700,000                                                              }{02778.  A special daymark is a _______________.                                                              A.  red-and-white octagon                                                              B.  daymark with a yellow stripe on it                                                              C.  green square                                                              D.  yellow diamond                                                              }{02779.  The buoy indicated by the letter B in illustration D044NG is a _____________.                                                              A.  nun                                                              B.  can                                                              C.  spar                                                              D.  pillar                                                              }{02780.  You are pushing a tow ahead and passing close to another towboat which is pushing ahead in the same direction (you are overtaking).  After the towheads pass close alongside ___________.                                                              A.  you will gain speed                                                              B.  both boats will gain speed                                                              C.  the tows will tend to drift apart                                                              D.  the tows will tend to drift together                                                              }{02782.  Your radar is set on a true motion display.  Which of the following will appear to move across the PPI scope.                                                              A.  Own ship's marker                                                              B.  Echo from a ship at anchor                                                              C.  Echoes from land masses                                                              D.  All of the above                                                              }�{02784.  Some Loran-C receivers automatically compute and readout the latitude and longitude of a vessel's position.  This indicated position may be in error if ___________.                                                              A.  the crossing angle of the selected LOP's is less than 48ø                                                              B.  there is signal distortion due to skywave contamination                                                              C.  the signal travels a significant distance over land                                                              D.  there is excessive super-refraction due to ducting                                                              }{02788.  The Light List indicates that a dayboard is a type KGW. You should _____________.                                                              A.  see a green and white diamond                                                              B.  leave it to port when southbound on the Atlantic Coast ICW                                                              C.  pass it close aboard on either side                                                              D.  look for another daymark to form the range                                                              }{02789.  In fog, when homing on a radiobeacon from a large navigational buoy, you should _______________.                                                              A.  alter course as soon as the fog signal is heard                                                              B.  apply the conversion angle to the received signal's bearing                                                              C.  disconnect the calibration cam (if so equipped)                                                              D.  ensure that the bearing moves aft                                                              }{02790.  A towboat has the same draft as the barges it is pushing ahead.  If the distance from the stern of the towboat to the head of the tow is 800 feet, where is the approximate location of the pivot point of the unit?                                                              A.  At the head of the tow                                                              B.  250 feet from the head of the tow                                                              C.  400 feet from the head of the tow                                                              D.  600 feet from the head of the tow                                                              }{02792.  If you take a bearing of 142ø and 259ø to two prominent objects, what bearing of a third object will provide the best fix?                                                              A.  081ø                                                              B.  238ø                                                              C.  201ø                                                              D.  234ø                                                              }{02794.  The standard atmospheric pressure in millibars is _________.                                                              A.  760.0                                                              B.  938.9                                                              C.  1000.0                                                              D.  1013.2                                                              }{02796.  The correction tables in the Nautical Almanac for use with Moon sights do NOT include the effects of ________________.                                                              A.  instrument error                                                              B.  augmentation                                                              C.  semidiameter                                                              D.  parallax                                                              }{02798.  A can buoy is indicated by what letter in illustration D044NG?                                                              A.  A                                                              B.  B                                                              C.  C                                                              D.  D                                                              }�{02799.  A sequenced radiobeacon is one that _________________.                                                              A.  transmits for one minute at one frequency and then shifts to another frequency for the next minute                                                  �           B�  shares the same transmitting frequency with other stations and transmits intermittently                                                              C.  provides a range and a bearing when use� with a calibrated RDF receiver                                                              D.  must be used in conjunction with a continuous radiobeacon to obtain an LOP                                                              }{02800.  The pivot point of a towboat with a tow ahead is usually which of the following?                                                              A.  One-third the length of the combined unit forward of the towboat                                                              B.  One-third the length of the combined unit back from the head                                                              C.  At the head of the towboat                                                              D.  One-half the length of the combined unit                                                              }{02801.  Mean high water is used __________.                                                              A.  as the reference for soundings on the Gulf coast of the U.S.                                                              B.  to indicate the shoreline where there is a large tidal fluctuation                                                              C.  as the reference plane for bottom contour lines                                                              D.  as the sounding datum for rivers, lakes, etc. regulated by locks                                                              }{02802.  The pictures shown in illustration D011NG represent the geographic location of a vessel and the radar presentation at the same time.  Which statement is TRUE?                                                              A.  Ship No. 1 does not paint as an individual target due to the effect of pulse length                                                              B.  The small island is not detected due to shadow effect of the mountain                                                              C.  A target bearing of the headland to the south-southeast is corrected by one-half of the beam width                                                              D.  Ship No. 2 is not detected due to the reflective mass of the mountain overpowering the ship's reflective signals                                                              }{02803.  Some locations maintain a zone time of -13.  What are the Greenwich time and date if the zone time and date are 0152, 10 January?                                                              A.  1252, 9 January                                                              B.  1452, 9 January                                                              C.  0052, 11 January                                                              D.  1452, 11 January                                                              }{02804.  The altitude at LAN may be observed by starting several minutes in advance and continuing until a maximum altitude occurs.  This procedure should not be used ____________.                                                              A.  when the declination and latitude are of different names                                                              B.  when the declination is greater than and the same name as the latitude                                                              C.  if the vessel is stopped or making bare steerageway                                                              D.  on a fast vessel on northerly or southerly headings                                                              }�{02809.  The diurnal variation of pressure is not visible in the middle latitudes in winter because ______________.                                                              A.  it is masked by the pressure changes of moving weather systems                                                              B.  the decreased gravitational effect from the sun causes the variation to fade                                                              C.  the decreased average temperature is less than the critical temperature                                                              D.  the increased coriolis force disperses the pressure variation                                                              }{02810.  When steering a tow downstream around the shape of a sand bar, and staying on the proper side of the buoys, an operator should be cautious of _________________.                                                              A.  eddies under the bar                                                              B.  swift current under the bar causing loss of control                                                              C.  cross-currents pushing the tow away from the bar                                                              D.  cross-currents pushing the tow into the bar                                                              }{02812.  A line of position from a celestial observation is a segment of a __________________.                                                              A.  circle of equal altitude                                                              B.  parallel of declination                                                              C.  parallel of altitude                                                              D.  vertical circle                                                              }{02814.  In low latitudes the range of the diurnal variation of pressure is up to ________________.                                                              A.   0.5  millibar                                                              B.   3.0 millibars                                                              C.   6.0 millibars                                                              D.  10.0 millibars                                                              }{02816.  The length of a wave is the length _____________.                                                              A.  of the wave's crest                                                              B.  of the wave's trough                                                              C.  measured from crest to trough                                                              D.  measured from crest to crest                                                              }{02818.  If you take bearings of 313ø T and 076ø T to two prominent objects, what bearing of a third object will provide the best fix?                                                              A.  048ø T                                                              B.  101ø T                                                              C.  142ø T                                                              D.  187ø T                                                              }{02819.  The time interval between successive wave crests is called ________.                                                              A.  wave period                                                              B.  wavelength                                                              C.  frequency                                                              D.  significant wave height                                                              }{02820.  A towboat is pushing barges ahead at a dangerously fast speed when ______________.                                                              A.  the towboat vibrates when backing down                                                              B.  the roostertail exceeds the height of the main deck                                                              C.  a strain is placed on the face wires                                                              D.  water comes over the foredeck of the lead barges                                                              }�{02822.  While navigating in fog off a coastline of steep cliffs, you hear the echo of the ships fog horn 2 seconds after the signal was sounded. What is the distance to the shore?                                                              A.  360 yards                                                              B.  320 yards                                                              C.  280 yards                                                              D.  140 yards                                                              }{02824.  When you turn on the fast time constant (differentiator) control of a radar it will _____________.                                                              A.  enhance weak target echoes and brighten them on the PPI                                                              B.  reduce clutter over the entire PPI by shortening the echoes                                                              C.  only suppress weak targets to a limited distance from the ship (sea clutter)                                                              D.  reduce the beam width to provide a map-like presentation for navigation                                                              }{02826.  If you take a bearing of 043ø and 169ø to two prominent objects, what bearing of a third object will provide the best fix?                                                              A.  356ø                                                              B.  102ø                                                              C.  144ø                                                              D.  201ø                                                              }{02828.  The daily recurring pattern of pressure changes most noticeable in low latitudes is the ______________.                                                              A.  daily lapse reading                                                              B.  diurnal variation of pressure                                                              C.  pressure tendency                                                              D.  synoptic pressure                                                              }{02829.  A spar buoy is indicated by what letter in illustration D044NG?                                                              A.  A                                                              B.  B                                                              C.  C                                                              D.  D                                                              }{02830.  The proper way to approach a downstream lock where there is an outdraft is to be ___________.                                                              A.  wide out from the land wall, keeping the stern in at all times                                                              B.  wide out from the land wall, keeping the stern out at all times                                                              C.  close in to the land wall, keeping the stern in at all times                                                              D.  close in to the land wall, keeping the stern out at all times                                                              }{02831.  A coastal chart could have a scale of __________.                                                              A.  not more than 1:25,000                                                              B.  1:35,000                                                              C.  1:100,000                                                              D.  1:500,000                                                              }�{02832.  The Light List indicates that a dayboard is a type MR. You should ______________.                                                              A.  leave it on either side                                                              B.  look for the other dayboard forming the range                                                              C.  look for an all red daymark                                                              D.  check to enter the correct channel at this junction daymark                                                              }{02834.  Mariners should be careful about taking RDF bearings on commercial stations broadcasting entertainment programs. What condition would probably NOT affect such a bearing?                                                              A.  The actual broadcast antenna may be remote from the broadcast station.                                                              B.  The shorter wave length of the broadcast band tends to re-radiate from the vessel's structure.                                                              C.  Many of these stations are inland causing land effect when the signal crosses the coastline.                                                              D.  The operating frequency may differ from the calibrated frequency of the RDF.                                                              }{02836.  The correction tables in the front of the Nautical Almanac for use with Sun sights do NOT include the effects of _____.                                                              A.  mean refraction                                                              B.  parallax                                                              C.  semidiameter                                                              D.  irradiation                                                              }{02838.  If you take a bearing of 191ø and 313ø to two prominent objects, what bearing of a third object will provide the best fix?                                                              A.  001ø                                                              B.  069ø                                                              C.  209ø                                                              D.  356ø                                                              }{02839.  Privately maintained aids to navigation ___________.                                                              A.  are painted white and must use a white light if lighted                                                              B.  must be conspicuously marked by a signboard with the words "PRIVATE AID"                                                              C.  must conform to the standards of the U.S. Aids to Navigation System                                                              D.  are not permitted in or along first-class waterways and may be authorized for second- and third-class waterways                                                              }{02840.  The lockmaster has given you permission to tie off on the lower guide wall to wait your turn to lock through.  What should you be most concerned with?                                                              A.  A downbound vessel                                                              B.  An upbound vessel                                                              C.  Current reaction when the lock chamber is being emptied                                �                             D.  Current reaction when the lock chamber is bein� filled                                                              }{02841.  You are required to enter a lock on your voyage. Information on the lock regulations, signals, and radio communAcations can be found in _________________.                                                              A.  the publication "Key to the Locks"                                                              B.  Bowditch                                                              C.  Corps of Engineer Information Bulletin                                                              D.  Coast Pilot                                                              }�{02842.  The drawspan of a floating drawbridge may be marked with __________.                                                �             A.  two white ligHts                                                              �B.  a yellow diamond                                                              C.  flashing blue lights                                                              D.  three red lights on each side of the draw                                                              }{02844.  The signal from�a ramark will show on the PPI as a _______.                                                              A.  coded signal on the same bearing and at a greater range then the transponder                                                              B.  circle surrounding the transponder                                                              C.  radial line from the transponder to the center of the PPI                                                              D.  dashed circle at the same range as the transponder                                                              }{02846.  What type of daymark is used to mark the port side of the channel when entering from sea?                                                              A.  Red and white octagon                                                              B.  Black and white diamond                                                              C.  Red triangle                                                              D.  Green square                                                              }{02848.  While navigating in fog off a coastline of steep cliffs, you hear the echo of the ships fog horn 6 seconds after the signal was sounded.  What is the distance to the shore?                                                              A.  1200 yards                                                              B.  1100 yards                                                              C.  1000 yards                                                              D.   900 yards                                                              }{02849.  If you take a bearing of 086ø to a lighthouse, what other bearing of another prominent object would give the best fix?                                                              �A.  000ø                                                              B.  066ø                                                              C.  112ø                                                              D.  271ø                                                              }{02850.  What is used to help prevent damage to barges, locks, and landings when you are locking or landing a tow?                                                              A.  Dock cushions                                                              B.  Springers                                                              C.  Landing bars                                                              D.  Bumpers (fenders)                                                              }{02852.  A daymark used as a regulatory or information mark will have the shape indicated by what item in illustration D045NG?                                   �                          A.  A                                                              B.  B                                                              C.  C                                                              D.  D                                                              }{02854.  The distance in miles between the ciRcle of equal altitude for the observed altitude (Ho) and the circle of equal altitude for the completed altitude (Hc) is the __________.                                                              A.  equation of time                                                              B.  zenith distance                                                              C.  intercept                                                              D.  zenith angle                                                              }�{02858.  While navigating in fog off a coastline of steep cliffs, you hear the echo of the ships fog horn 2 1/2 seconds after the signal was sounded.  What is the distance to the shore?                                                              A.  225 yards                                                              B.  460 yards                                                              C.  750 yards                                                              D.  910 yards                                                              }{02859.  The buoy indicated by the letter C in illustration D044NG is a ________.                                                              A.  nun                                                              B.  can                                                              C.  spar                                                              D.  pillar                                                              }{02860.  On the Mississippi and Ohio Rivers, there is a special type of fog known as steam fog.  It is caused by ___________.                                                              A.  warm air passing over much colder water                                                              B.  cold air passing over much warmer water                                                              C.  a rapid cooling of the ground on a clear night                                                              D.  rain coming out of a warm air mass aloft                                                              }{02862.  When slanted letters are used to spell the name of a charted object you know the ___________.                                                              A.  object is only a hazard to vessels drawing in excess of 20'                                                              B.  position is approximate or doubtful                                                              C.  object is always visible                                                              D.  object may cover and uncover with the tide                                                              }{02864.  You are swinging ship to calibrate the RDF.  The RDF gyro bearing is 308ø at the same time the visual bearing is 310ø pgc.  The gyro error is 2ø E.  At the time of the bearing the heading was 270ø pgc.  Which statement about the calibration is TRUE?                                                              A.  There is calibration correction on a heading of 272ø T.                                                              B.  The correction is +2ø on an RDF bearing of 040ø relative.                                                              C.  The correction is -2ø when the vessel is on course 272ø T.                                                              D.  There is no calibration correction on an RDF bearing of 310ø T.                                                              }{02866.  Some locations maintain a zone time of -13.  What are the zone time and date if the Greenwich time and date are 2152, 10 January?                                                              A.  1052, 9 January                                                              B.  0852, 10 January                                                              C.  1052, 10 January                                                              D.  1052, 11 January                                                              }{02868.  You are inbound in a channel marked by a range.  The range line is 309ø T.  You are steering 306ø T and have the range in sight as indicated in illustration D048NG.  What action should you take?                                                              A.  Continue on the present heading until the range is in line then alter course to the right                                                              B.  Immediately alter course to the right to bring range in line                                                              C.  Continue on course if the range is closing otherwise alter course to the left.                                                              D.  Immediately alter course to 309ø T if the range is closing                                                              }�{02869.  A pillar buoy is indicated by what letter in illustration D044NG?                                                              A.  A                                                              B.  B                                                              C.  C                                                              D.  D                                                              }{02870.  Steam fog is most likely to occur on the Mississippi and Ohio Rivers in ____________.                                                              A.  spring, around late evening                                                              B.  spring, around early evening                                                              C.  fall, around early morning                                                              D.  fall, around midday                                                              }{02872.  When using a directional loop antenna to take an RDF bearing, the sense antenna is used to __________.                                                              A.  determine which station of a group of sequenced stations is transmitting                                                              B.  increase the sensitivity of the receiver                                                              C.  resolve the 180ø ambiguity                                                              D.  eliminate the induced currents caused by signal re-radiation from the vessel's structure                                                              }{02874.  What daymark has no lateral significance?                                                              A.  Red triangle                                                              B.  Red and white octagon                                                              C.  Green and white diamond                                                              D.  Green square                                                              }{02875.  A harbor chart could have a scale of ___________.                                                              A.  not more than 1:25,000                                                              B.  1:35,000                                                              C.  1:150,000                                                              D.  not less than 1:500,000                                                              }{02876.  On 13 November 1981 you observe a back sight of the upper limb of the Sun as seen through the sextant's scope.  The sextant altitude (hs) is 109ø23.6'.  The height of eye is 66 feet, and the index error is 2.0' off the arc.  What is the observed altitude (Ho)?                                                              A.  71ø01.2'                                                              B.  70ø57.2'                                                              C.  70ø45.4                                                              D.  70ø26.4'                                                              }{02877.  All private aids to navigation in or along navigable waters of the United States are listed in the __________.                                                              A.  Sailing�Directions                                                              B.  Light List                                                              C.  List of Private Aids                                                              D.  Aids to Navigation Manual                                                              }�{02878.  Given are the courses and speeds of 4 vessels.  The navigator of which vessel would be required to know the actual time of meridian trAnsit in order to take an accurate observation at LAN?                                                              A.  C 356ø T,�Sp 5 knots                 �                                            B.  C 099ø T, Sp 17 knots                                                              C.  C 192ø T, Sp 23 knots                                                              D.  C 278ø T, Sp 6 knots                                                              }{02880.  While upbound through Memphis, the weather report on the TV news indicates that a cold front will cross western Kentucky and Tennessee the next morning.  What weather should accompany this front?                                                              A.  Light, southerly winds; high humidity and possibly fog                                                              B.  Overcast with steady, light rain or drizzle                                                              C.  Gusting winds shifting to the northwest with thunderstorms                                                              D.  Scattered clouds with light to moderate southeasterly winds and possibly fog                                                              }{02882.  While upbound through Memphis, the weather report on TV news indicates that a warm front is stationary over the Kentucky - Missouri - Tennessee areas.  What weather conditions should you expect?                                                              A.  Strong, gusting winds from the NW with thundershowers                                                              B.  Light winds from the northeast with clear skies                                                              C.  A "blue norther"                                                              D.  Southerly winds with steady rain; fog or overcast                                                              }{02884.  The pictures shown in illustration D011NG represent the geographic location of a vessel and the radar presentation at the same time.  Which statement is TRUE?                                                              A.  Ship No. 1 does not appear as an individual target due to the effect of beam width.                                                              B.  Small island is not detected due to the multiple echo effect from the mountain.                                                              C.  A tangent bearing of the headland to the south-southeast is corrected by subtracting one-half of the beam width.                                                              D.  Ship No. 2 is not detected due to the side lobe effect of radar reflecting from the mountain.                                                              }{02886.  On mid-ocean waters, the height of a wind-generated wave is not affected by the ____________.                                                              A.  water depth exceeding 100 feet                                                              B.  fetch                                                              C.  wind's velocity                                                              D.  duration of the wind                                                              }{02888.  You are swinging ship to calibrate the RDF.  The RDF gyro beAring is 054ø at the same time the visual bearing is 055ø pgc.  The gyro error is 1ø E.  At the time of the bearings, the heading was 139ø pgc.  Which statement abo�t the calibration is TRUE?                                                              A.  One degree must be added to all RDF bearings.                                                              B.  One degree must be subtracted from a RDF bearing of 055ø T.                                                              C.  One degree must be added to all RDF bearings of 276ø relative.                                                              D.  One degree must be subtracted from RDF bearings when on a course of 140ø T.                                                              }�{02889.  On 29 June 1981 you observe a back sight of the lower limb of the Moon as seen through the sextant's scope.  The sextant altitude (hs) is 114ø16.9'.  The height of eye is 36 feet, and the index error is 2.0' off the arc.  The horizontal parallax is 60.5'.  What is the observed altitude (Ho)?                                                              A.  66ø23.8'                                                              B.  66ø04.4'                                                              C.  66ø00.4'                                                              D.  65ø53.8'                                                              }{02890.  While passing through Memphis, the weather report on the TV news indicates that a cold front is crossing western Kentucky and Tennessee.  Tomorrow's weather will be dominated by a high pressure area.  What weather should you expect tomorrow?                                                              A.� Light, southerly winds; high humidity and possibly fog                  �                                           B.  Moderate winds from the northwest, clear visibility and cooler temperatures                                                              C.  Low overcast; mild temperatures with light, steady rain or drizzle                                                              D.  Scattered clouds with light, southeasterly winds; high humidity and possibly fog                                                              }{02891.  Twenty-three meters equals __________.                                                              A.   17.50 feet                                                              B.   75.46 feet                                                              C.   96.00 feet                                                              D.  104.99 feet                                                              }{02892.  The Light List indicates that a dayboard is a type NB. You should ______________.                                                              A.  see a black triangle                                                              B.  look for another daymark forming a range                                                              C.  expect a daymark of no lateral significance                                                              D.  check to enter the Aorrect channel at the junction daymark                                                              }{02894.  Fetch is the ________________.                                                              A.  distance a wave travels between formation and decay        �                                                     B.  stretch of water over which a wave-forming wind blows                                                              C.  time in seconds required for two crests to pass a given point                                                              D.  measurement of a wave's steepness                                                              }{02896.  When navigating in pilot waters, the maximum time between bearings used in a running fix should be about _________.                                                              A.  5 minutes                                                              B.  30 minutes                                                              C.  1 hour                                                              D.  4 hours                                                              }{02898.  The adjustments to your sextant while correcting for the error of collimation are made by turning two screws bearing on the frame.  How are these screws turned?                                                              A.  Tighten them both in steps, first one then the other                                                              B.  Loosen them both in steps, first one then the other                                                              C.  Tighten one first then loosen the other                                                              D.  Loosen one first then tighten the other                                                              }�{02899.  If you take a bearing of 043ø and 169ø to two prominent objects, what bearing of a third object will provide the best fix?                                                              A.  356ø                                                              B.  073ø                                                              C.  192ø                                                              D.  309ø                                                              }{02900.  Who should be consulted for changing conditions of controlling depths in major channels?                                                              A.  U.S. Coast Guard                                                              B.  Defense Mapping Agency                                                              C.  National Ocean Survey                                                              D.  U.S. Army Corps of Engineers                                                              }{02902.  The direction a vessel is pointed at any given time is the ________.                                                              A.  course                                                              B.  track                                                              C.  heading                                                              D.  course over the ground                                                              }{02904.  Your radar displays your ship off center.  As you proceed on your course, your ship's marker moves on the PPI scope while echoes from land masses remain stationary.  What is this display called?                                                              A.  Off center                                                              B.  True motion                                                              C.  Stabilized                                                              D.  Head up                                                              }{02906.  The accuracy of an azimuth circle can be checked by ________.                                                              A.  sighting a terrestrial range in line and comparing the observed bearing against the charted bearing                                                              B.  aligning the relative bearing markings so that 000ø is on the lubber's line and the line �f sight passes over the center of the compass                                    C.  ensuring that the alignment marks on the inner face of the circle are in line with those on the repeater on relative bearings of 000ø and 090ø                                    D.  comparing differences between the observed azimuth and the computed azimuths of two celestial bodies on two separate azimuths                                                     }{02908.  A daymark used to indicate the port side of the channel when approaching from seaward is indicated by what letter in illustration D045NG?                                                              A.  A                                                              B.  B                                                              C.  C                                                              D.  D                                                              }{02909.  A nun buoy is indicated by what letter in illustration D044NG?                                                              A.  A                                                              B.  B                                                              C.  C                                                              D.  D                                                              }�{02912.  Error in RDF bearings may be induced by various conditions. Which of the following would probably NOT affect an RDF bearing?                                                              A.  The great circle radio wave path to the transmitter being parallel to a coastline.                                                              B.  A skywave contaminating the ground wave.                                                              C.  The ground wave crossing a land mass between the transmitter and your vessel.                                                              D.  Sunspot effect on bearings taken around noon.                                                              }{02913.  The Daily Memorandum contains information on __________.                                                              A.  active weather disturbances such as hurricanes or tropical storms                                                              B.  the latest navigational warnings                                                              C.  scheduled vessel arrivals and departures for a 24-hour period                                                              D.  water levels at river ports where run-off affects tidal heights                                                              }{02914.  A daymark with red and green bands and a red band on top will have the shape indicated by what letter in illustration D045NG?                                                              A.  A                                                              B.  B                                                              C.  C                                                              D.  D                                                              }{02916.  If you take a bearing of 191ø and 313ø to two prominent objects, what bearing of a third object will provide the best fix?                                                              A.  022ø                                                              B.  131ø                                                              C.  211ø                                                              D.  249ø                                                              }{02918.  What agency maintains federal aids to navigation?                                                              A.  Corps of Engineers                                                              B.  Coast Guard                                                              C.  National Ocean Service                                                              D.  Maritime Administration                                                              }{02919.  You are using a radiobeacon for an RDF bearing. It is part of a six-station sequence and just ceased transmitting. How long must you wait before that particular starts transmitting again?                                                              A.  50 seconds                                                              B.  1 minute                                                              C.  5 minutes                                                              D.  50 minutes                                                              }{02920.  Navigation charts of the Upper Mississippi River are published by ___________.                                                              A.  National Ocean Survey                                                              B.  Lake Survey                                                              C.  Corps of Engineers, U.S. Army                                                              D.  U.S. Coast Guard                                                              }{02922.  The Light List indicates that a dayboard is a type TR-SY. You should ______________.                                                              A.  look for a dayboard of type TR-TY to form a range                                                              B.  leave it port when southbound on the Atlantic portions of the ICW                                                              C.  pass it close aboard on either side                                                              D.  expect a daymark with no lateral significance                                                              }�{02924.  If you take a bearing of 264ø to a lighthouse, what other bearing of another object would give the best fix?                                                              A.  289ø                                                              B.  350ø                                                              C.  081ø                                                              D.  120ø                                                              }{02926.  You are inbound in a channel marked by a range.  The range line is 309ø T.  You are steering 306ø T and have the range in sight as indicated in illustration D047NG.  The range continues to open.  What action should you take?                                                              A.  Come left until the range closes then steer to the left of 306ø T.                                                              B.  Alter course to the right to 309ø T or more to bring the range in line.                                                              C.  Continue on course but be prepared to come right if the range continues to open.                                                              D.  Alter course to the left to close the range, then alter course to 309ø T.                                                              }{02928.  You are in a buoyed channel at night and pass a lighted buoy with an irregular characteristic.  You should report this to the ___________.                                                              A.  Coast Guard                                                              B.  harbor master                                                              C.  Corps of Engineers                                                              D.  National Ocean Service                                                              }{02929.  On 29 June 1981 you observe a back sight of the upper limb of the Moon as seen through the sextant's scope.  The sextant altitude (hs) is 114ø16.9'.  The height of eye is 36 feet and the index error is 2.0' on the arc.  The horizontal parallax is 60.5'.  What is the observed altitude (Ho)?                                                              A.  66ø31.6'                                                              B.  66ø31.0'                                                              C.  66ø28.8'                                                              D.  66ø26.0'                                                              }{02930.  How is a navigation light identified on a Army Corps of Engineers navigation map?                                                              A.  Name and light characteristic                                                              B.  Name and miles A.H.P.                                                              C.  Light characteristic and miles A.H.P.                                                              D.  None of the above                                                              }{02932.  The channel under a bridge is marked with lights of the lateral system.  The bridge piers adjacent to the channel shall be marked with ________.                                                              A.  occulting white lights                                                              B.  yellow lights                                                              C.  fixed white lights                                                              D.  flashing blue lights                                                              }{02934.  The radar echo from an overhead power line will usually appear on the PPI scope as a _____________.                                                              A.  faint echo spanning the channel                                                              B.  contact located at the low point of sag                                                              C.  single echo where the line is at a right angle to the bearing to it                                                              D.  fuzzy or pulsing line caused by the electromagnetic radiation from the power line                                                              }�{02935.  On a transpacific voyage, you receive a message from your vessel's operators saying that your vessel has been consigned to voluntary Naval Control of Shipping.  Further information is contained in __________.                                                              A.  the Light List                                                              B.  Radio Aids to Navigation (PUB 117)                                                              C.  the International Code of Signals (PUB 102)                                                              D.  the Coast Pilot                                                              }{02936.  Information on search and rescue procedures and special, local communications used in Mexican waters will be found in the ___________.                                                              A.  World Port Index                                                              B.  International Code of Signals (Pub 102)                                                              C.  Sailing Directions (Planning Guides)                                                              D.  Merchant Ship Search and Rescue Manual (MERSAR)                                                              }{02937.  The depth of the water is indicated on a chart as 32 meters. This is equal to __________.                                                              A.   11.50 fathoms                                                              B.   12.62 fathoms                                                              C.   17.50 fathoms                                                              D.  104.99 fathoms                                                              }{02938.  If you take a bearing of 176ø to a lighthouse, what other bearing of another prominent object would give the best fix?                                                              A.  000ø                                                              B.  021ø                                                              C.  189ø                                                              D.  272ø                                                              }{02939.  The buoy indicated by the letter D in illustration D044NG is a _______.                                                              A.  nun                                                              B.  can                                                              C.  spar                                                              D.  pillar                                                              }{02940.  On the Corps of Engineer's Navigation Maps, the channel is ___________.                                                              A.  midway between the banks                                                              B.  indicated by depths (in feet)                                                              C.  indicated by a broken line                                                              D.  not indicated                                                              }{02942.  Which statement about sequenced radiobeacon operation is TRUE?                                                              A.  Each station broadcasts for 6 minutes and is silent for 54 minutes.                                                              B.  The distance between stations must be at least 250 miles to prevent confusion of signals.                                                              C.  In a six station group, each station broadcasts for one minute and is silent for 5 minutes.                                                              D.  Only minor radiobeacons (20 miles or less range) are sequenced.                                                              }{02944.  The height of a wave is the vertical distance ____________.                                                              A.  from the still water plane to the crest                                                              B.  from the still water plane to the trough                                                              C.  from crest to trough                                                              D.  between water levels at one-quarter of the wave's length                                                              }�{02946.  You are inbound in a channel marked by a range.  The range line is 309ø T.  You are steering 306ø T and have the range in sight as indicated in illustration DO48NG.  The range is closing.  What action should you take?                                                              A.  Alter course to the right to 309ø T or move to close the range then steer 309ø T.                                                              B.  Continue on 306ø T until the range closes then change course to 309ø T.                                                              C.  Steer 306ø T until on the range then steer to the left of 306ø T to stay on the range.                                                              D.  Come left until the range closes, then steer to the right of 309ø T.                                                              }{02948.  What is used to eliminate the 180ø ambiguity when taking an RDF bearing with a rotating loop antenna?                                                              A.  The null                                                              B.  Sense antenna                                                              C.  Calibration cam                                                              D.  Signal strength meter                                                              }{02949.  On 13 November 1981 you observe a back sight of the lower limb of the Sun as seen through the sextant's scope.  The sextant altitude (hs) is 109ø26.3'.  The height of eye is 66 feet, and the index error is 2.0' on the arc.  What is the observed altitude (HO)?                                                              A.  70ø56.6'                                                              B.  70ø38.0'                                                              C.  70ø27.2'                                                              D.  70ø23.2'                                                              }{02950.  On a Army Corps of Engineers navigation map, each mile A.H.P. is marked by a ____________.                                                              A.  dashed red line                                                              B.  number showing mileage                                                              C.  navigation light                                                              D.  red circle                                                              }{02952.  The channel under a bridge is marked with lights of the lateral system.  The centerline of the channel shall be marked on the bridge by ________.                                                              A.  an occulting white light                                                              B.  a yellow light                                                              C.  three fixed white lights                                                              D.  a flashing blue light                                                              }{02954.  You are inbound in a channel marked by a range.  The range line is 309ø T.  You are steering 306ø T and have the range in sight as indicated in illustration D047NG.  What action should you take?                                                              A.  Continue on the present heading until the range is in line then alter course to the left.                                                              B.  Immediately alter course to the right to bring the range in line.                                                              C.  Continue on course if the range is closing, otherwise alter course to the left.                                                              D.  Immediately alter course to 309ø T.                                                              }�{02956.  On 23 August 1981 you observe a back sight of the lower limb of the Sun as seen through the sextant's scope.  The sextant altitude (hs) is 116ø42.8'.  The height of eye is 56 feet and the index error is 2.0' off the arc.  What is the observed altitude (Ho)?                                                              A.  63ø42.0'                                                              B.  63ø38.0'                                                              C.  63ø19.4'                                                              D.  63ø06.2'                                                              }{02958.  Drawbridges equipped with radiotelephones display a _______.                                                              A.  day signal of a yellow diamond marked with the call sign                                                              B.  white sign with the number 16 and the call sign on it                                                              C.  black and white diamond marked with RT 16                                                              D.  blue and white sign showing the radio's channels                                                              }{02960.  Which of the following is NOT found in the Mississippi River System Light List?                                                              A.  Distance that a lighted aid to navigation can be seen at night                                                              B.  Distance between major points on the Mississippi River                                                              C.  A color plate showing the details of the aids to navigation used on the Mississippi River                                                              D.  Times of Coast Guard broadcasts concerning river stages                                                              }{02962.  While navigating in fog off a coastline of steep cliffs, you hear the echo of the ship's fog horn 4 1/2 seconds after the signal was sounded.  What is the distance to the shore?                                                              A.  405 yards                                                              B.  628 yards                                                              C.  730 yards                                                              D.  825 yards                                                              }{02964.  The pictures shown in illustration D011NG represents the geographic location of a vessel and the radar presentation at the same time.  Which statement is TRUE?                                                              A.  Ship No. 1 does not paint as an individual target due to the side lobe affect.                                                              B.  The small island is not detected due to the limitation caused by the pulse length.                                                              C.  A tangent bearing of the headland to the south-southeast is corrected by subtracting one-half of the beam width.                                                              D.  Ship No. 2 is not detected due to the combined af�ects of beam width and pulse length.                                                              }{02965.  Which symbol represents a 10-fathom curve?                                                              A.  ____ ____ ____                                                              B.  ... ____ ... ____                                                              C.  ____ . _____ . ____ . ____                                                              D.  ........                                                              }{02966.  If you take a bearing of 264ø to a lighthouse, what other bearing of another prominent object would give the best fix?                                                              A.  291ø                                                              B.  059ø                                                              C.  182ø                                                              D.  239ø                                                              }�{02968.  Some locations maintain a zone time of -13.  What are the zone time and date if the Greenwich time and date are 0152, 10 January?                                                              A.  0052, 9 January                                                              B.  0258, 9 January                                                              C.  1452, 10 January                                                              D.  0052, 11 January                                                              }{02969.  A red triangular daymark is used to mark _______________.                                                              A.  the centerline of a navigable channel                                                              B.  the starboard side (when entering from sea) of a waterway                                                              C.  a prominent object of navigational interest that has no lateral significance                                                              D.  area of a channel where passing another vessel is permitted                                                              }{02970.  The Light List shows a lighted aid to navigation on the left bank.  This means that the light can be seen on the left side of a vessel ___________.                                                              A.  ascending the river                                                              B.  descending the river                                                              C.  crossing the river                                                              D.  proceeding from seaward                                                              }{02972.  You are in a channel inbound from sea.  A daymark used to mark a channel junction when the preferred channel is to starboard will have the shape indicated by what letter in illustration D045NG?                                                              A.  A                                                              B.  B                                                              C.  C                                                              D.  D                                                              }{02974.  What daymark shape is used in the lateral system?                                                              A.  Semicircle                                                              B.  Triangle                                                              C.  Pentagon                                                              D.  Diamond                                                              }{02976.  A large navigational buoy (LNB) is painted _______________.                                                              A.  red                                                              B.  yellow                                                              C.  with red and white vertical stripes                                                              D.  with a distinct color and pattern unique to each buoy                                                              }{02977.  Which symbol represents a 2-fathom curve?                                                              A.  -- -- --                                                              B.  .. ____ .. ____ .. ____                                                              C.  ____ . ____ . ____ .                                                              D.  .......                                                              }{02978.  Where do you find the semidiameter correction to be used to correct sextant observations of the stars?                                                              A.  It is included in the altitude corrections inside the front cover of the Nautical Almanac.                                                              B.  Table 25 in Bowditch contains the correction.                                                              C.  A correction of -0.5 should be applied to all star sights.                                                              D.  No semidiameter correction is used.                                                              }�{02979.  If you take a bearing of 356ø to a lighthouse, what other bearing of another prominent object would give the best fix?                                                              A.  013ø                                                              B.  082ø                                                              C.  176ø                                                              D.  201ø                                                              }{02980.  What volume of the Coast Guard Light List is used for the Mississippi River system?                                                              A.  I                                                              B.  II                                                              C.  IV                                                              D.  V                                                              }{02981.  The radio navigational warning system that provides information on navigational and meteorological hazards on coastal waters near the broadcasting station is known as ___________.                                                              A.  NAVTEX                                                              B.  HYDROLANT/HYDROPAC                                                              C.  NAVAREA                                                              D.  SAFESEA                                                              }{02982.  If you take a bearing of 142ø and 259ø to two prominent objects, what bearing of a third object will provide the best fix?                                                              A.  019ø                                                              B.  084ø                                                              C.  166ø                                                              D.  281ø                                                              }{02984.  What two shapes indicated in illustration D045NG are used to indicate a preferred channel?                                                              A.  A and B                                                              B.  B and C                                                              C.  C and D                                                              D.  A and D                                                              }{02986.  Some places maintain a zone time of -13.  What are the time and date at Greenwich if the zone time and date are 2152, 10 January?                                                              A.  1052, 9 January                                                              B.  0852, 10 January                                                              C.  1052, 10 January                                                              D.  1052, 11 January                                                              }{02988.  The buoy indicated by the letter A in illustration D044NG is a _______.                                                              A.  nun                                                              B.  can                                                              C.  spar                                                              D.  pillar                                                              }�{02989.  On 13 November 1981 you observe a back sight of the upper limb of the Moon as seen through the sextant's scope.  The sextant altitude (hs) is 110ø31.2'.  The height of eye is 46 feet and the index error is 2.0' off the arc.  The horizontal parallax is 61.3'.  What is the observed altitude (Ho)?                                                              A.  70ø41.4                                                              B.  70ø15.4'                                                              C.  70ø11.4'                                                              D.  70ø02.2                                                              }{02990.  In which of the following sources could you find the vertical clearance of a bridge on the Ohio River?                                                              A.  Notice to Mariners                                                              B.  Light List of the Mississippi River System                                                              C.  Great Lakes Pilot                                                              D.  Coast Pilot of the Gulf of Mexico                                                              }{02992.  The radar echo from an overhead power line will usually appear on the PPI scope as _______________.                                                              A.  a contact on a collision course                                                              B.  a weak echo showing the length of the power line                                                              C.  a contact located at the low point of sag                                                              D.  overhead power lines usually do not provide enough signal return to provide an echo                                                              }{02994.  If you take a bearing of 313ø and 076ø of two prominent objects, whaT bearing of a third object will pRovide the best fix?                                                              A.  014ø                                                              B.  133ø                                                              C.  255ø                                                              D.  339ø                                                              }{02998.  While navigating in fog off a coastline of steep cliffs, you hear the echo of the ships fog horn 3 1/2 seconds after the signal was sounded.  What is the distance to the shore?                                                              A.  640 yards                                                              B.  480 yards                                                              C.  315 yards                                                              D.  143 yards                                                              }{02999.  When entering a channel from seaward, the numbers on buoys ________.                                                              A.  are the same as the Light List number                                                              B.  are marked in 6 inch figures with retroreflective material                                                              C.  increase with the even numbers to starboard                                                              D.  decrease with the odd numbers to starboard                                                              }{03000.  All aids to navigation listed in the Mississippi River System Light List are shown as miles from a reference point and on the _____________.                                                              A.  east or west bank          �                                                   B.  left or right descending bank                                                              C.  port or starboard side of the vessel                                                              D.  left or right ascending bank                                                              }�{03002.  The diurnal variation of pressure is most noticeable ______.                                                              A.  above the polar circles                                                              B.  in a low pressure area                                                              C.  during perioDs of low temperatures                                                              D.  in the doldrums                                                              }{03004.  While navigating in fog off a coastline of steep cliffs, you hear the echo of the ship's fog horn 4 seconds after the signal was sounded.  What is the distance to the shore?                                                              A.  209 yards                                                              B.  363 yards                                                              C.  480 yards                                                              D.  730 yards                                                              }{03005.  The agonic line on an isomagnetic chart indicates the ___________.                                                              A.  magnetic equator                                                              B.  magnetic longitude reference line                                                              C.  points where there is no variation                                                              D.  points where there is no annual change in variation                           �                                  }{03006.  You are outbound in a channel marked by a range astern.  The range line is 309ø T.  You are steerin� 127ø T and have the range in sight as indicated in illustration D047NG. What action should you take?                                                              A.  Come right to 129ø T                                                              B.  Continue on course until the range comes in line then alter course to 129ø T                                                              C.  Continue on course until the range comes in line then alter course to 125ø T                  �                                           D.  Come right to close the rAnge then when on the r�nge steer 129ø T                                                              }{03008.  If you take a bearing of 086ø to a lighthouse, what other bearing of another prominent object would give the best fix?     �                                                        A.  291ø                                                              B.  261ø                                                              C.  242ø                                                              D.  196ø                                                              }{03009.  "Proceeding from seaward" for the purpose of the direction of buoying offshore, lateral system buoys would be proceeding ___________________.                                                              A.  northerly on the Atlantic Coast                                                              B.  easterly on the Gulf Coast                                                              C.  northerly on the Pacific Coast                                                              D.  None of the above                                                              }{03010.  A white buoy with a blue band is _______________.                                                              A.  an isolated danger mark                                                              B.  a hydrographic data collection buoy                                                           �  C.  a mooring buoy                                                              D.  marking a restricted area                                                              }{03011.  The survey information upon which a chart is based is found ________.                                                              A.  at the top center of the next line                                                              B.  near the chart title                                                              C.  at the lower left corner                                                              D.  at any convenient location                                                              }�{03012.  The drawspan of a floating drawbridge may be marked with __________.                                                              A.  a yellow light showing Morse (B)                                                              B.  a yellow and white diamond                                                              C.  flashing blue lights                                                              D.  three red lights on each side of the draw                                                              }{03014.  Given are the courses and speeds of 4 vessels.  The navigator of which vessel would be required to know the actual time of meridian transit in order to take an accurate observation at LAN?                                                              A.  C 356ø T, Sp 5.5 knots                                                              B.  C 162ø T, Sp 27 knots                                                              C.  C 095ø T, Sp 30 knots                                                              D.  C 268ø T, Sp 22 knots                                                              }{03016.  The radar control that shortens all echoes on the display and reduces clutter caused by rain or snow is the _______________________.                                                              A.  sensitivity time control (sea clutter control)                                                              B.  receiver gain control                                                              C.  brilliance control                                                              D.  fast time constant (differentiator)                                                              }{03018.  If you take a bearing of 356ø to a lighthouse, what other bearing of another prominent object would give the best fix?                                                              A.  013ø                                                              B.  178ø                                                              C.  256ø                                                              D.  342ø                                                              }{03019.  Where would you find information about the time of high tide at a specific location on a particular day of the year?                                                              A.  Tide Tables                                                              B.  Tidal Current Tables                                                              C.  Coast Pilot                                                              D.  Nautical Almanac                                                              }{03020.  A mooring buoy, if lighted, must show what color light?                                                              A.  Yellow                                                              B.  White                                                              C.  Blue                                                              D.  Any color except red or green                                                              }{03021.  What information is found in the chart title?                                                              A.  Chart number                                                              B.  Chart sounding datum                                                              C.  Revision and edition date                                                              D.  Variation information                                                              }{03022.  A daymark with red and green bands and a green band on top will have the shape indicated by what letter in illustration D045NG?                                                              A.  A                                                              B.  B                                                              C.  C                                                              D.  D                                                              }�{03024.  Given are the courses and speeds of 4 vessels.  The navigator of which vessel would be required to know the actual time of meridian transit in order to take an accurate observation at LAN ?                                                              A.  C 018ø T, Sp 6 knots                                                              B.  C 079ø T, Sp 24 knots                                                              C.  C 101ø T, Sp 7 knots                                                              D.  C 349ø T, Sp 25 knots                                                              }{03026.  A compass card without north-seeking capability that is used for relative bearings is a(n) ________________.                                                              A.  bearing circle                                                              B.  pelorus                                                              C.  bearing bar                                                              D.  alidade                                                              }{03028.  The channel under a bridge is marked with aids from the lateral system.  The centerline of the channel is marked on the bridge with _________.                                                              A.  a yellow triangle                                                              B.  three white lights                                                              C.  a black and white diamond                                                              D.  a red and white octagon                                                              }{03029.  On 13 November 1981 you observe a back sight of the lower limb of the Moon as seen through the sextant's scope.  The sextant altitude (hs) is 110ø31.2'.  The height of eye is 46 feet and the index error is 2.0' on the arc.  The horizontal parallax is 61.3'.  What is the observed altitude (Ho)?                                                              A.  70ø11.8'                                                              B.  69ø41.8'                                                              C.  69ø25.6'                                                              D.  69ø18.4'                                                              }{03030.  Isogonic lines are lines on a chart indicating __________.                                                              A.  points of equal variation                                                              B.  points of zero variation                                                              C.  the magnetic latitude                                                              D.  magnetic dip                                                              }{03032.  The path actually followed by a vessel is the ____________.                                                              A.  course                                                              B.  track                                                              C.  heading                                                              D.  course over the ground                                                              }{03034.  You are outbound in a channel marked by a range astern.  The range line is 309ø T.  You are steering 127ø T and have the range in sight as indicated in illustration D048NG. Assuming there is no set and drift, what action should you take?                                                              A.  Come right to 131ø T and check to see if the range closes                                                              B.  Continue on course until the range comes in line then alter course to 129ø T                                                              C.  Continue on course until the range comes in line then alter to 125ø T                                                              D.  Come left to close the range then when on the range steer 127ø T                                                              }�{03035.  A major advantage of the NAVTEX system when compared to other systems is that ___________.                                                              A.  the information can be received on an ordinary FM radio                                                              B.  warnings are printed out for reading when convenient                                                              C.  broadcasts are at scheduled times                                                              D.  a low frequency band is used for long distance transmission                                                              }{03036.  What daymark has no lateral significance?                                                              A.  Square; top half green and bottom half red                                                              B.  Black and white diamond                                                              C.  Red triangle                                                              D.  Green square                                                              }{03038.  In low latitudes, the low(s) of the diurnal variation of pressure occur(s) at _____________.                                                              A.  noon                                                              B.  noon and midnight                                                              C.  1000 and 2200                                                              D.  0400 and 1600                                                              }{03039.  As you enter a U.S. channel from seaward the numbers on the buoys ___________________.                                                              A.  increase with the can buoys being even numbered                                                              B.  increase with the can buoys being odd numbered                                                              C.  decrease with the can buoys being even numbered                                                              D.  increase in channels going to the north or west, and decrease in channels going south or east                                                              }{03040.  What type of instrument would be used to help predict the approach of a low pressure system?                                                              A.  anemometer                                                              B.  fathometer                                                              C.  barometer                                                              D.  thermometer                                                              }{03042.  How long would a steady wind need to blow in order to create a wind driven current?                                                              A.  2 hours                                                              B.  6 hours                                                              C.  12 hours                                                              D.  18 hours                                                              }{03052.  The Sailing Directions contain information on ___________.                                                              A.  required navigation lights                                                              B.  lifesaving equipment standards                                                              C.  casualty reporting procedures                                                              D.  currents in various locations                                                              }{03060.  What information is NOT found in the chart title?                                                              A.  Survey information                                                              B.  Scale                                                              C.  Date of first edition                                                              D.  Projection                                                              }������00001 B00002 D00003 C00004 B00005 B00006 B00007 C00008 C00009 A00010 A00011 B00012 D00013 B00014 A00016 C00017 A00018 B00019 D00020 A00021 B00022 A00023 A00024 D00025 A00026 D00027 A00028 C00029 C00030 A00031 A00032 B00033 B00034 D00035 D00036 B00037 B00038 D00039 A00040 C00041�B00042 C00043 C00044 A00045 A00046 A00047 C00048 D00049 A00050 B00051 D00052 B00053 B00054 B00055 D�00056 A00057 B00058 A00059 D00060 A00061 A00062 B00063 D00064 B00065 C00066 A00067 A00068 D00069 A00070 C00071 A00072 B00073 C�00074 D00075 B00076 B00077 B00078 B00079 B00080 C00081 C00082 D00083 B00084 A00085 D00086 B00087 A00088 C00089 B00090 B00091 D00092 C00093 A00094 A00095 C00096 A00097 B00098 B00100 B00101 C00102 C00103 B00104 B00105 D00106 D00107 D00108 C00109 C00110 C�00111 A00112 D00113 C00114 B00115 B00116 C00117 D00118 C00119 C00120 A00121 D00122 A00123 A00124 B00125 B00126 C00127 C00128 A00129 B00130 B00131 D00132 B00133 B00134 B00135 C00136 C00137 D00138 B00139 C00140 C00141 C00142 B00144 B00145 D00147 C00148 B00149 B00150 B00151 B00152 B00153 C00154 D00156 A00157 A00158 C00160 C00161 D00162 C00163 D00164 A00165 D00166 D00167 C00168 C�00169 A00171 A00172 A00173 B00174 B00175 C00176 C00177 B00178 A00179 C00181 B00182 C00183 C00184 D00185 D00186 C00187 D00189 C00191 C00192 C00193 B00194 A00195 A00196 C00197 A00198 B00199 A00200 A00201 B00202 D00203 B00204 B00205 A00206 C00207 D00208 D00209 A00211 D00212 D00213 C00214 C00215 C00216 B00217 B00218 D00219 D00220 D00221 B00222 D00223 B00224 A00225 A00226 D00227 D�00228 D00229 A00230 A00231 B00232 D00233 D00235 C00236 C00237 A00238 B00239 D00241 B00243 A00245 D00246 C00247 C00248 D00251 B00252 B00253 D00255 C00256 A00257 D00259 C00260 B00261 D00262 D00263 B00264 B00265 C00266 A00268 D00269 D00271 D00272 B00273 A00274 A00276 B00277 B00278 D00281 B00282 D00283 A00284 B00286 D00287 D00288 C00290 D00291 A00292 C00293 C00294 A00295 B00296 A�00297 C00298 A00299 B00300 C00301 D00302 A00303 B00304 B00306 A00307 C00308 B00309 C00310 B00311 B00312 B00313 C00314 D00315 C00316 A00317 C00319 B00320 C00321 B00322 C00323 B00324 C00325 D00326 A00327 B00328 C00329 D00331 D00332 C00333 B00334 D00335 A00336 D00337 B00338 C00339 C00341 C00342 D00343 D00344 B00346 C00347 A00349 C00350 C00351 B00352 D00353 A00354 C00355 C00356 D�00357 B00358 B00359 D00360 B00361 B00362 D00363 B00364 A00365 A00366 B00367 C00368 A00369 D00370 D00371 C00372 A00373 B00374 A00375 A00376 D00377 B00378 B00379 C00380 B00381 B00382 A00383 D00384 D00385 C00386 B00387 C00388 D00389 A00390 A00391 C00392 B00393 A00394 C00395 A00396 C00397 D00398 B00401 A00402 D00403 C00404 B00405 C00406 D00407 B00408 C00409 A00410 B00411 C00412 A�00413 A00414 D00415 A00416 B00417 D00418 A00419 B00422 B00423 B00424 D00425 D00426 C00427 C00428 B00429 B00430 D00431 D00432 B00433 A00434 B00435 C00436 C00437 B00438 C00439 A00441 B00442 D00443 D00444 B00445 C00446 B00447 A00448 C00449 A00451 A00452 A00453 B00454 A00455 D00456 D00457 D00458 A00459 D00460 D00461 A00462 A00463 D00464 C00465 B00466 C00467 C00468 B00469 C00470 C�00471 A00472 B00473 D00474 B00475 B00476 A00477 C00478 D00479 A00480 B00481 A00482 D00483 A00484 A00485 C00486 D00487 D00488 B00489 A00490 B00491 D00492 B00493 C00494 D00495 B00496 D00497 B00498 C00499 D00500 B00501 D00502 A00503 D00504 A00505 D00506 D00507 A00509 D00511 D00512 C00513 B00514 D00515 B00516 D00517 A00518 D00519 B00521 D00522 D00523 B00524 A00525 D00526 B00527 C�00528 B00529 B00531 C00533 A00534 C00535 D00536 A00537 B00538 A00539 A00541 C00542 B00543 C00544 B00545 A00546 D00547 A00549 D00551 C00552 A00553 C00554 C00555 D00556 A00557 A00558 A00559 D00560 D00561 B00562 A00563 C00564 D00565 A00566 D00567 C00568 A00569 B00571 C00572 B00573 B00574 B00575 D00576 D00577 C00578 B00579 C00580 B00581 D00582 A00583 B00584 A00585 C00586 B00587 B�00588 C00589 D00590 C00591 C00592 C00593 B00594 B00595 A00596 D00597 B00598 D00599 B00600 C00601 A00602 B00603 A00604 D00605 C00606 A00607 D00608 B00609 A00610 C00611 C00612 B00613 B00614 B00615 B00616 A00617 A00618 D00619 B00621 B00622 A00623 B00624 A00625 C00626 D00627 C00628 C00629 D00630 A00631 C00632 B00633 A00634 C00636 B00637 D00638 B00639 A00640 A00641 A00642 C00643 C�00644 A00645 B00646 D00647 C00649 C00650 C00651 B00652 A00653 B00654 D00655 A00656 A00657 B00658 C00659 D00661 D00662 A00663 A00664 B00665 C00666 B00667 B00668 D00670 B00671 C00672 C00673 D00674 B00675 B00676 C00677 A00678 B00679 B00680 D00681 D00682 B00683 C00684 D00685 D00686 B00687 B00688 A00689 A00690 C00691 A00692 C00693 B00694 B00695 A00696 D00697 D00698 A00699 B00701 C�00702 A00703 D00704 B00705 B00706 C00707 D00708 C00709 B00710 B00711 A00712 D00713 C00714 C00715 A00716 C00717 A00718 A00719 B00720 A00721 B00722 C00723 C00724 D00725 A00726 D00727 C00728 B00729 B00730 C00731 C00732 B00733 D00734 B00735 B00736 C00737 C00739 A00740 A00741 D00742 C00743 C00744 D00745 B00746 C00747 B00748 B00749 B00750 B00751 D00752 D00753 A00754 D00755 D00756 B�00757 A00758 B00759 B00761 D00762 D00763 D00764 D00765 B00767 B00771 A00772 B00773 A00774 C00775 D00777 A00778 D00779 C00780 C00781 C00782 A00783 B00784 C00785 D00786 C00787 A00789 A00790 A00791 C00792 C00793 D00794 B00795 B00796 B00797 D00798 A00800 A00801 A00802 B00803 C00804 D00805 A00807 C00808 C00809 B00811 A00812 D00813 C00814 A00816 B00817 D00818 D00819 A00821 D00822 C�00823 D00824 B00825 C00826 A00827 C00828 A00829 D00830 C00831 A00832 B00833 D00834 A00835 A00836 D00837 B00841 B00842 B00843 B00844 D00845 B00846 C00847 B00848 C00849 B00850 C00851 B00852 A00853 A00854 A00855 C00856 B00857 A00858 A00859 D00860 A00861 C00862 A00863 A00864 A00865 A00866 A00867 A00868 B00869 A00871 B00872 A00873 C00874 B00875 D00876 A00877 D00878 C00879 A00881 C�00882 B00883 C00884 D00885 C00886 A00887 A00888 A00889 B00890 C00891 D00892 A00893 B00894 A00895 A00896 C00897 D00898 A00899 C00901 D00902 C00903 B00904 A00905 A00906 A00907 C00908 C00909 C00910 C00911 A00912 B00913 D00914 C00915 D00916 A00917 A00918 B00920 B00921 A00922 C00923 C00924 C00925 C00926 B00927 B00929 C00930 A00931 C00932 B00933 A00934 D00935 B00936 C00937 D00938 D�00939 D00941 B00942 D00944 B00945 A00946 D00947 B00948 A00950 A00951 C00952 C00953 C00954 D00955 D00956 B00957 A00958 A00959 C00960 B00961 A00962 D00963 C00964 A00965 A00966 B00967 C00970 B00971 C00972 B00973 C00974 A00975 D00976 A00977 A00978 C00979 A00981 A00982 A00983 D00984 B00985 B00986 A00987 C00988 C00989 D00991 D00992 A00993 B00994 B00995 D00996 B00997 B00998 D00999 D�01001 A01002 A01003 A01004 C01005 B01006 B01007 B01008 C01009 C01010 C01011 D01012 A01013 D01014 B01015 D01016 B01017 C01018 A01019 D01020 C01021 D01022 B01023 A01024 D01025 A01026 B01027 A01028 D01029 D01030 A01031 B01032 C01033 D01034 A01035 D01036 C01037 B01038 B01039 D01040 C01041 C01042 D01043 C01044 C01045 B01046 C01047 D01049 B01050 C01051 D01052 A01053 D01054 D01055 D�01056 B01057 B01058 C01059 B01060 C01061 B01062 A01063 C01064 D01065 C01066 C01067 B01069 A01071 A01072 C01074 D01075 A01076 A01077 C01081 C01083 C01084 B01086 A01087 D01088 B01089 A01090 A01091 D01093 A01094 B01095 C01096 D01097 A01101 B01102 C01103 A01104 D01105 C01106 B01107 D01108 B01109 D01111 C01113 B01114 D01116 C01117 C01120 B01121 D01122 B01123 B01124 B01125 B01126 A�01127 A01128 B01129 C01131 B01133 C01134 D01135 A01136 A01137 A01138 D01139 B01140 B01141 C01142 C01143 D01144 B01145 A01146 D01147 C01148 D01150 A01151 D011�3 B01154 C01156 A01157 D01158 C01159 D01160 A01161 C01162 C01163 B01164 B01166 D01167 B01168 D01169 A01171 A01172 C01173 C01174 D01175 B01176 C01177 C01179 A01180 C01181 D�01182 D01183 B01184 A01186 B01187 C�01190 B01191 C�01192 B01193 C01194 A01196 D01197 B01198 C01199 C01200 D01201 A01202 B�01203 D01204 A01205 A01206 B01207 A01208 A01209 D01211 D01212 C01213 A01216 A01217 D01218 A01219 D01221 B01222 D01223 B01226 B01227 C01229 B01231 C01232 A01233 C01234 B01236 B01237 C01238 B01239 A01241 A01242 A01243 D01244 B01246 D01247 A01248 D01249 D01251 C01252 A01253 A01256 A01257 A01260 B01261 B01262 D�01263 C01264 C01265 A01266 C01267 B01268 D01269 C01270 C01271 D01272 B01273 B01274 B01275 C01276 D01277 A01279 B01280 B01281 C01282 C01283 B01284 A01285 D01286 D01287 B01288 C01289 D01290 C01291 D01292 A01293 C01294 C01295 C01296 D01297 C01298 A01299 D01300 A01301 D01302 A01303 C01304 A01306 D01307 B01308 B01309 B01310 B01311 C01312 A01313 B01314 B01316 D01317 B01318 B01319 A�01321 D01322 C01323 B01324 A01326 C01327 C01328 A01329 C01330 C01331 A01332 D01333 A01334 D01335 A01336 A01337 A01338 B01339 C01340 B01341 B01342 B01343 D01346 B01347 C01349 C01350 B01351 B01352 B01353 A01354 B01355 D01356 B01357 C01359 B01360 B01361 B01362 C01363 B01364 D01365 A01366 A01367 B01368 C01369 A01370 D01373 A01374 A01375 B01376 D01377 C01378 C01379 B01380 A01381 B�01382 C01383 A01384 B01385 A01386 D01387 C01388 B01389 C01390 D01391 D01392 A01393 B01394 C01395 A01396 A01397 B01398 A01399 D01400 B01401 B01402 D01403 A01404 D01405 B01406 D01407 A01408 D01409 C01411 C01413 D01414 D01415 C01416 B01417 C01418 B01419 A01421 B01422 D01423 D01424 B01425 B01426 A01427 B01428 D01429 A01430 B01431 C01432 D01433 B01434 C01435 B01436 D01437 B01438 C�01439 D01440 C01441 C01442 A01443 B01444 C01445 B01446 B01447 B01448 D01449 C01452 B01453 B01454 D01455 A01456 D01457 C01459 C01460 A01461 A01462 D01463 A01464 D01465 A01466 D01467 D014�8 D01469 C01470 D01471 A01472 A01473 A01474 A01475 A01476 C01477 C01478 B01479 B01481 A01482 B01483 A01485 C01486 A01487 A01488 C01489 B01490 C01491 D01492 B01493 A01494 C01495 C01496 A014�7 B�01498 B01499 A01500 D01501 B01502 A01503 B01504 C01505 A01506 B01508 B01509 C01512 C015�3 C01514 B01517 B01518 C01519 D01520 A01523 B01525 D01527 B01528 B01530 B01531 B01534 B01535 A01536 A01537 C01538 D01539 C01540 C01541 A01542 C01544 A01545 C01546 B01547 A01548 A01549 D01550 A01551 A01552 B01553 B01555 D01556 C01557 B01559 A01560 A01561 D01562 B01563 D01564 A01565 B01566 A�01567 C01568 D01569 D01570 C01571 A01573 C01574 C01575 C01576 A01577 D01578 D01579 B01580 D01581 B01582 D01583 B01585 A01586 C01587 B01590 B01591 B01593 B01594 C01595 D01596 A01597 B01599 B01600 A01601 B01604 D01605 A01606 B01608 B01610 A01611 D01612 C01613 B01615 C01616 D01617 A01618 A01619 A01620 D01622 A01631 B01639 C01645 A01646 C01655 B01662 C01668 B01670 C01671 A01672 B�01678 D01750 D01752 C01754 C01757 D01758 A01759 B01760 D01762 B01766 B01768 C01769 A01770 B01771 C01772 A01774 C01778 A01779 B01782 C01784 C01786 C01789 A01790 A01794 A01800 B01802 B01804 D01806 A01808 A01809 D01812 D01816 D01818 B01820 A01822 A01824 C01826 B01829 D01830 D01832 D01836 D01838 A01840 C01842 D01844 D01848 D01850 B01852 A01858 B01859 C01860 C01862 C01866 A01868 A�01869 D01870 B01879 C01880 A01882 D01883 B01884 D01885 A01886 C01887 D01888 B01890 C01892 D01898 D01899 D01900 A01902 C01904 B01905 D01906 A01908 D01909 D01910 B01914 B01916 C01918 B01919 D01920 A01922 C01923 B01924 B01926 B01928 D01930 B01932 B01934 D01936 C01938 D01940 C01942 C01944 A01946 B01948 B01949 C01950 B01951 A01952 B01954 B01956 A01958 A01960 C01961 D01964 C01968 B�01969 D01970 C01972 C01974 C01976 A01978 B01979 B01980 C01982 D01984 D01986 B01987 A01988 A01989 C01990 B01992 B01994 C01996 B01999 C02000 B02002 C02004 D02006 C02008 B02010 A02014 B02016 A02018 C02019 B02020 C02021 D02022 C02024 D02028 C02030 B02032 D02040 A02041 A02042 C02044 B02048 A02049 A02050 C02052 A02054 D02056 B02058 C02059 A02060 C02061 B02062 A02066 C02067 A02068 A�02069 B02070 D02072 A02074 A02078 D02079 D02080 B02081 D02082 A02084 A02086 A02087 C02089 B02090 A02092 D02096 D02098 C02100 C02102 B02104 D02110 B02119 A02120 C02124 C02126 C02130 D02131 A02134 B02140 D02144 A02150 C02152 A02158 B02159 B02160 A02161 B02162 C02164 B02168 A02170 C02172 C02174 C02178 C02179 D02180 C02184 A02186 D02188 A02189 D02190 C02191 D02194 C02196 A02198 D�02199 B02200 A02202 B02203 B02207 C02209 A02210 A02212 D02214 D02215 D02216 B02219 A02220 D02222 B02224 C02226 B02229 A02230 D02232 B02234 D02236 D02238 C02239 A02240 D02242 A02244 B02246 A02248 D02250 C02252 D02254 A02256 C02258 D02259 D02260 B02262 B02264 B02266 D02268 D02269 B02270 B02272 C02274 D02276 A02277�A02278 C02279 A02280 D02282 C02284 D02286 D02288 B02289 B02290 A�02292 D02294 D02296 A02298 C02299 C�2300 A02302 A02304 C02306 A02308 B02309 B02310 D02312 A02314 C02316 D02317 A02318 D02319 A02320 C02322 B02324 A02326 B02328 B02329 D02330 A02332 C02334 C02335 B02336 B02338 C02340 C02342 A02344 D02346 C02348 B02349 A02350 A02352 C02354 D02356 A02358 C02360 D02362 C02364 D02366 B02369 A02370 A02372 C02374 C02375 B02376 D02378 B02379 B02380 D�02382 B02384 B02386 C02387 D02388 D02389 D02390 A02392 D02394 C02396 A02399 D02400 D02402 A02404 B02406 A02408 D02409 D02410 B02412 B02414 B02416 B02418 B02419 C02420 D02422 B02424 A02426 D02428 A02429 D02430 B02432 A02434 B02436 D02437 C02438 A02439 A02440 C02442 D02444 D02446 B02448 D02449 C02450 A02452 C02454 B02456 C02458 B02459 D02460 D02462 D02464 B02466 C02468 B02469 D�02470 B02472 D02474 B02476 C02478 A02479 D02480 D02482 B02484 D02486 D02488 B02489 A02490 D02492 C02494 B02496 A02498 A02499 A02500 A02502 A02504 C02506 A02508 B02509 C02510 D02512 A02514 D02516 B02518 C02519 C02520 C02522 C02524 A02526 C02527 B02528 D02529 B02530 D02532 A02534 C02536 C02538 C02539 C02540 C02542 C02544 B02546 A02548 A02549 D02560 B02562 B02566 C02569 D02570 D�02572 B02574 B02576 D02578 C02579 D02580 C02582 D02583 D02584 D02586 B02587 A02588 A02589 D02590 D02592 A02594 C02596 A02598 B02600 C02602 D02604 A02606 B02609 D02610 B02612 A02614 D02616 D02618 D02619 B02620 B02624 A02626 C02628 B02629 D02630 D02631 C02632 A02634 A02636 D02638 D02639 A02640 B02642 C02644 C02646 A02648 D02649 B02650 C02651 A02652 D02654 B02656 C02658 C02660 D�02662 C02664 C02666 B02668 B02669 A02670 C02673 C02674 D02676 D02678 D02679 A02680 B02682 B02684 B02686 B02688 C02689 A02690 D02692 C02694 C02696 B02698 B02700 A02702 A02703 C02704 D02706 C02708 D02709 D02710 B02712 B02714 B02716 D02718 D02719 C02720 C02722 B02724 A02726 B02729 C02730 A02737 B02738 C02739 D02740 C02741 A02742 B02744 A02746 D02748 D02750 B02752 C02760 B02762 A�02764 D02766 C02768 C02769 D02770 C02772 A02774 A02776 B02777 D02778 D02779 C02780 D02782 A02784 C02788 D02789 D02790 B02792 C02794 D02796 A02798 A02799 B02800 B02801 B02802 B02803 A02804 D02809 A02810 A02812 A02814 B02816 D02818 D02819 A02820 D02822 A02824 B02826 B02828 B02829 B02830 C02831 C02832 A02834 B02836 D02838 B02839 C02840 C02841 D02842 B02844 C02846 D02848 B02849 A�02850 D02852 B02854 C02858 B02859 D02860 B02862 D02864 B02866 D02868 B02869 C02870 C02872 C02874 C02875 B02876 B02877 B02878 C02880 C02882 D02884 A02886 A02888 C02889 D02890 B02891 B02892 C02894 B02896 B02898 D02899 D02900 D02902 C02904 B02906 D02908 A02909 D02912 D02913 B02914 D02916 D02918 B02919 C02920 C02922 B02924 B02926 A02928 A02929 A02930 B02932 B02934 C02936 C02937 C�02938 D02939 A02940 C02942 C02944 C02946 C02948 B02949 C02950 D02952 A02954 C02956 D02958 D02960 A02962 D02964 D02965 C02966 C02968 C02969 B02970 B02972 A02974 B02976 A02977 D02978 D02979 B02980 D02981 A02982 A02984 D02986 B02988 B02989 C02990 B02992 A02994 A02998 A02999 C03000 B03002 D03004 D03005 C03006 D03008 D03009 C03010 C03011 B03012 A03014 B03016 D03018 C03019 A03020 B�03021 B03022 A03024 D03026 B�03028 D03029 B03030 A03032 D�03034 B03035 B03036 B03038 D�03039 B03040 C03042 C03052 D�03060 C��