Explorer of the Seas METADATA - 2007

Class of Data: Surface ocean carbon dioxide concentrations

Dataset Identifier: AOML_Explorer

Two Files: Explorer_2007_NS

Explorer_2007_EW

Statement of how to cite dataset:

Explorer website:
http://www.aoml.noaa.gov/ocd/gcc/explorer_introduction.php

These data are made freely available to the public and the scientific
community

in the belief that their wide dissemination will lead to greater
understanding

and new scientific insights. The availability of these data does not

constitute publication of the data. We rely on the ethics and integrity
of

the user to assure that AOML receives fair credit for our work. Please
send

manuscripts using this data to AOML for review before they are submitted

for publication so we can insure that the quality and limitations of the
data

are accurately represented.

Measurement platform identifier: Explorer of the Seas

Cruise Information:

Weekly cruises to Bermuda, Canada or through the Caribbean departing

from Miami, Florida or Bayonne, New Jersey.

Project Information:

This project was sponsored by the underway pCO2 on ships project of the

NOAA Climate Program and represents a collaboration between Royal
Caribbean

International, the University of Miami\'s Rosenstiel School of Marine

and Atmospheric Science, the National Oceanic and Atmospheric

Administration, the National Science Foundation, the Office of

Naval Research, and the National Aeronautics and Space Administration.

Scientist responsible for technical quality of dataset:

Rik Wanninkhof

NOAA/AOML/Ocean Chemistry Division

4301 Rickenbacker Causeway

Miami, Florida 33149

Rik.Wanninkhof@noaa.gov

Contact person for this dataset:

Betty Huss

NOAA/AOML/Ocean Chemistry Division

4301 Rickenbacker Causeway

Miami, Florida 33149

Betty.Huss@noaa.gov

Timestamp for initial submission of dataset: 8/01/08

Timestamp for the most recent update of dataset: 8/01/08

Timestamp period the dataset refers to: 1/07/2007 - 12/01/2007

Geographic area the dataset refers to:

13 N to 46 N

88 W to 60 W

Eastern Cruise Track:

Day 1 - Miami, Florida (25.8 N/80.7 W)

Day 3 - San Juan, Puerto Rico (18.5 N/66.1 W)

Day 4 - Philipsburg, St. Maarten (18.0 N/63.0 W)

Day 5 - Charlotte Amalie, St. Thomas (18.3 N/64.9 W)

Day 7 - Nassau, Bahamas (25.1 N/77.3 W)

Day 8 - Miami, Florida (25.8 N/80.7 W)

Change in Eastern Cruise Track for EX0718E and EX0719E:

Day 1 - Miami, Florida (25.8 N/80.2 W)

Day 3 - Labadee, Haiti (19.8 N/72.3 W)

Day 4 - Ocho Rios, Jamaica (18.4 N/77.1 W)

Day 6 - Miami, Florida (25.8 N/80.2 W)

Western Cruise Track:

Day 1 - Miami, Florida (25.8 N/80.7 W)

Day 3 - Belize City, Belize (17.4 N/88.1 W)

Day 4 - Costa Maya, Mexico (18.7 N/87.7 W)

Day 5 - Cozumel, Mexico (20.5 N/87.0 W)

Day 6 - George Town, Grand Cayman (19.3 N/81.4 W)

Day 8 - Miami, Florida (25.8 N/80.7 W)

Northern Cruise Track:

Day 1 - Bayonne, New Jersey (40.7 N/74.1 W)

Day 3 - Kings Wharf, Bermuda (32.3 N/64.8 W)

Day 6 - Bayonne, New Jersey (40.7 N/74.1 W)

B Cruise Track:

Day 1 - Bayonne, New Jersey (40.7 N/74.1 W)

Day 3 -- Kings Wharf, Bermuda (32.3 N/64.8 W)

Day 5 - Philipsburg, St. Maarten (18.0 N/63.0 W)

Day 6 - Charlotte Amalie, St. Thomas (18.3 N/64.9 W)

Day 7 - San Juan, Puerto Rico (18.5 N/66.1 W)

Day 10 - Bayonne, New Jersey (40.7 N/74.1 W)

E9 Cruise Track:

Day 1 - Bayonne, New Jersey (40.7 N/74.1 W)

Day 4 -- Labadee, Haiti (19.8 N/72.3 W)

Day 5 -- Casa de Campo, Dominican Republic (18.4 N/69.0 W)

Day 6 - Charlotte Amalie, St. Thomas (18.3 N/64.9 W)

Day 7 - San Juan, Puerto Rico (18.5 N/66.1 W)

Day 10 - Bayonne, New Jersey (40.7 N/74.1 W)

Change in E9 Cruise Track for EX0744E9:

Day 1 - Bayonne, New Jersey (40.7 N/74.1 W)

Day 5 - Philisburg, St. Maarten (18.0 N/63.0 W)

Day 6 - Charlotte Amalie, St. Thomas (18.3 N/64.9 W)

Day 7 - San Juan, Puerto Rico (18.5 N/66.1 W)

Day 10 - Bayonne, New Jersey (40.7 N/74.1 W)

NE Cruise Track:

Day 1 - Bayonne, New Jersey (40.7 N/74.1 W)

Day 2 -- New London, Connecticut (41.4 N/72.1 W)

Day 4 -- Halifax, Nova Scotia (44.6 N/63.6 W)

Day 5 -- Saint John, New Brunswick (45.3 N/66.1 W)

Day 6 -- Bar Harbor, Maine (44.4 N/68.2 W)

Day 7 -- Portland, Maine (43.7 N/70.2 W)

Day 8 -- Boston, Massachusetts (42.3 N/71.0 W)

Day 9 -- Bayonne, New Jersey (40.7 N/74.1 W)

BB Cruise Track:

Day 1 - Bayonne, New Jersey (40.7 N/74.1 W)

Day 3 - Kings Wharf, Bermuda (32.3 N/64.8 W)

Day 6 - Boston, Massachusetts (43.3 N/71.0 W)

Day 7 - Bayonne, New Jersey (40.7 N/74.1 W)

C9 Cruise Track:

Day 1 - Bayonne, New Jersey (40.7 N/74.1 W)

Day 4 - Labadee, Haiti (19.8 N/72.3 W)

Day 5 - Casa De Campo, Dominican Republic (18.4 N/69.0 W)

Day 6 - Charlotte Amalie, St. Thomas (18.3 N/64.9 W)

Day 7 - San Juan, Puerto Rico (18.5 N/66.1 W)

Day 9 - Bayonne, New Jersey (40.7 N/74.1 W)

C12 Cruise Track:

Day 1 - Bayonne, New Jersey (40.7 N/74.1 W)

Day 4 - Philisburg, St. Maarten (18.0 N/63.0 W)

Day 5 - St. Johns, Antigua (17.1 N/61.8 W)

Day 6 - Roseau, Dominica (15.3 N/61.4 W)

Day 7 - Bridgetown, Barbados (13.1 N/59.6 W)

Day 8 - Basseterre, St. Kitts (17.3 N/62.7 W)

Day 9 - Charlotte Amalie, St. Thomas (18.3 N/64.9 W)

Day 10 - San Juan, Puerto Rico (18.5 N/66.1 W)

Day 13 - Bayonne, New Jersey (40.7 N/74.1 W)

List of variables included in this dataset:

COLUMN HEADER EXPLANATION

1\. Group_Ship: AOML_Explorer for all Explorer of the Seas data.

2\. Cruise: Cruise Name (For example, EX0715W: EX = Explorer

of the Seas, 07 = 2007, 15 = 15th weekly cruise, and

W = western track).

3\. JD_GMT: Decimal year day.

4\. Date_DDMMYYYY: The date format has been changed to comply with the
IOCCP

recommendations.

5\. TIME_HH:MM:SS: GMT time.

NOTE: local time = GMT - 4 hr or GMT - 5 hr.

6\. Lat_dec_degree: Latitude in decimal degrees (negative values are in
the

southern hemisphere).

7\. Long_dec_degree: Longitude in decimal degrees (negative values are
in the

western latitudes).

8\. xCO2eq_ppm: Mole fraction of CO2 (dry) in the headspace equilibrator

at equilibrator temperature (Teq) in parts per million.

9\. xCO2a_ppm: Mole fraction of CO2 in air in parts per million.

This field is not measured on the Explorer of the Seas -

all data initialized to -9.

10\. Pres_Equil_hPa: Barometric pressure in the lab in hectopascals (1

hectopascal = 1 millibar).

11\. Pres_sealevel_hPa: Barometric pressure from ship\'s barometer,
corrected to

sea level in hectopascals (1 hectopascal = 1 millibar).

12\. EqTemp_C: Temperature in equilibrator water in degrees centigade.

Temperature in equilibrator measured with a calibrated

thermistor.

13\. SST(TSG)\_C: Temperature from the ship\'s thermosalinograph in
degrees

centigrade.

14\. Sal(TSG)\_Permil: Salinity from the ship\'s thermosalinograph on
the Practical

Salinity Scale.

15\. Water_flow_l/min: Water flow through equilibrator in liters per
minute.

16\. Gasflow_IR_ml/min: Gas flow through the Licor infrared analyzer
before the

flow is stopped in milliliters per minute.

17\. Temp_IR_C: Temperature of the Licor infrared analyzer sample cell
in

degrees centigrade.

18\. Pres_IR_hPa: Pressure in the Licor infrared analyzer in
hectopascals.

NOTE: There is no pressure sensor in the Licor but since

it is vented to atmosphere prior to measurement, this

value is the same as the pressure in the lab (number 10

above). (1 hectopascal = 1 millibar).

19\. Ship_heading_true_degree: Ship\'s heading from ship\'s navigation
system in

degrees with 0 = North and 90 = East.

20\. Ship_speed_knot: Ship\'s speed from ship\'s navigation system in
knots.

21\. Wind_dir_rel_degree: Wind direction relative to the ship from
ship\'s navigation

system in degrees with 0 = from the bow and 90 = from

starboard.

22\. Wind_speed_rel_m/s: Wind speed relative to the ship from ship\'s
navigation

system in meters per second.

23\. fCO2W@SST_uatm: Fugacity of CO2 in sea water in microatmospheres
calculated

as outlined below.

24\. Qcflag_water: Quality control flag for sea water xCO2 and fCO2
values

with 2 = good value, 3 = questionable value, 4 = bad value,

and 9 = no measurement taken.

25\. fCO2a_uatm: Fugacity of CO2 in air in microatmospheres. This field
is

not measured on the Explorer of the Seas - all data

initialized to -9.

26\. Qcflag_air: Quality control flag for air xCO2 and fCO2. Since no

air values were taken, all values are initialized to 9.

27\. dfCO2_uatm: Sea water fCO2 - air fCO2 in microatmospheres. This
uses

the average air value for the current hour. This field is

not measured on the Explorer of the Seas - all data

initialized to -9.

28\. Fluoro_ug/l: Reading from the fluorometer in micrograms per liter.

29\. Wind_speed_true_m/s: True wind speed in meters per second.

30\. Wind_dir_true_degree: True wind direction in degrees were 0 = North
and

90 = East.

31\. Air_Temp_C: Outside air temperature from ship\'s computer system

in degrees centigrade.

32\. Oxygen: Units not known at this time.

The following fields have been QC\'ed by the CO2 group:

Group_Ship

Cruise

JD_GMT

DATE_DDMMYYYY

TIME_HH:MM:SS

Lat_dec_degree

Long_dec_degree

xCO2eq_ppm

Pres_Equil_hPa

EqTemp_C

Water_flow_l/min

Gasflow_IR_ml/min

Temp_IR_C

Pres_IR_hPa

fCO2W@SST_uatm

QCflag_water

The following fields are from the ship\'s onboard systems and the
quality of this

data cannot be verified:

Pres_sealevel_hPa

SST(TSG)\_C

Sal(TSG)\_Permil

Ship­\_heading_true_degree

Ship_speed_knot

Wind_dir_rel_degree

Wind_speed_rel_m/s

Fluoro_ug/l

Wind_speed_true_m/s

Wind_dir_true_degree

Air_Temp_C

Oxygen

Narrative description of system design:

CO2 ANALYTICAL SYSTEM:

The concentration of carbon dioxide (CO2) in surface ocean water is
determined

by measuring the concentration of CO2 in gas that is in contact with the
water.

Surface water is pumped over 200 m through 7/8\" Teflon tubing from an
inlet

in the ship\'s bow to the equilibration chamber. Water comes from the
bow

intake 2 m below the water line and the TSG is located close to the
inlet.

Since the sea surface temperature is high and the ship is well
air-conditioned,

the Teq is on average about 0.4 °C lower than SST. The equilibration
chamber

has an enclosed volume of gas, or headspace, and a pool of seawater that

continuously overflows to a drain. As the water flows through the
chamber,

the dissolved gases (like CO2) partition between the water and the
headspace.

At equilibrium, the ratio of CO2 in the water and in the headspace is

influenced most by temperature, and that relationship is known. By
measuring

the concentration of CO2 in the headspace and the temperature in the
chamber,

the partial pressure (or fugacity) of CO2 in the surface water can be
calculated.

INSTRUMENT DESCRIPTION

The general principle of instrumental design can be found in Wanninkhof
and Thoning

(1993), Ho et al. (1995), and Feely et al. (1998). The concentration of
CO2 in the

headspace gas is measured using the adsorption of infrared (IR)
radiation, which

results from changes in the rotational and vibrational energy state of
the CO2

molecule. The LI-COR detector passes IR radiation through two 6\" cells.
The

reference cell is flushed with a gas of known CO2 concentration. The
sample cell

is flushed with the headspace gas. A vacuum-sealed, heated filament is
the

broadband IR source. The IR radiation alternates between the two cells
via a

chopping shutter disc. An optical filter selects an adsorption band
specific

for CO2 (4.26 micron) to reach the detector. The solid state (lead
selenide)

detector is kept at -12 degrees °C for excellent stability and low
signal

noise (less than 0.2 ppm).

Several steps are taken to reduce interferences and to increase the
accuracy

of the measurements. After the equilibration chamber, the headspace
travels

through a drying trap to remove water vapor. During each analysis, the

headspace gas is compared to a reference gas of known concentration. To

improve the accuracy of the measurements, three different gaseous
standards

for CO2 are analyzed once an hour instead of the headspace gas.

Analyzer: LI-COR 6252 (analog output) infrared (IR) analyzer.

Method of Analysis: Differential analyses relative to a reference gas
which is

close to the CO2 concentration of the middle standard. Measures dried
equilibrator

headspace gas. Gas flow is stopped prior to IR readings.

Drying Method: The equilibrator headspace sample gas first goes through
an air

filter and a thermoelectric refrigerator (\~6-10 °C). The sample and
standard

gases pass through a Perma Pure (Nafion) dryer and a short column of
magnesium

perchlorate before reaching the analyzer. The counter flow in the Perma
Pure

tube is the reference gas.

Equilibrator (setup, size, flows): The equilibrator was fabricated using
a filter

housing (ColeParmer, U-010509-00) with \~0.5 L water reservoir and \~0.8
L gaseous

headspace. Water flow rate is \~1.5 L/min. Headspace recirculation rate
is

\~80 ml/min.

Narrative statement identifying measurement method for each required
parameter:

CALCULATIONS:

The mixing ratios of ambient air and equilibrated headspace air are
calculated

by fitting a second-order polynomial through the hourly averaged
millivolt

response of the detector versus mixing ratios of the standards. Mixing
ratios

of dried equilibrated headspace and air are converted to fugacity of CO2
in

surface seawater and water saturated air in order to determine the fCO2.

For ambient air and equilibrator headspace, the fCO2a (or fCO2eq) is
calculated

assuming 100% water vapor content:

fCO2eq = xCO2eq(P-pH2O)exp(B11+2d12)P/RT

where fCO2eq is the fugacity in the equilibrator, pH2O is the water
vapor

pressure at the sea surface temperature, P is the atmospheric pressure
(in atm),

T is the SST or equilibrator temperature (in K) and R is the ideal gas
constant

(82.057 cm\^3·atm·deg\^-1·mol\^-1). The exponential term is the fugacity
correction

where B11 is the second virial coefficient of pure CO2

B11 = -1636.75 + 12.0408T - 0.032795T\^2 + 3.16528E-5 T\^3

and d12 = 57.7 - 0.118 T is the correction for an air-CO2 mixture in
units of

cm\^3·mol\^-1 (Weiss, 1974).

The calculation for the fugacity at SST involves a temperature
correction term

for the increase of fCO2 due to heating of the water from passing
through the

pump and through 5 cm ID PVC tubing within the ship. The water in the
equilibrator

is typically 0.4 °C cooler than sea surface temperature. The empirical
temperature

correction from equilibrator temperature to SST is:

fCO2(SST) = fCO2(eq) Exp (-0.0423 (Teq-SST))

where SST is sea surface temperature and Teq is the equilibrator
temperature in

in degrees °C.

Sampling Cycle:

The system runs on an hourly cycle during which 3 standard gases, a
reference gas

and 20 surface water samples (from the equilibrator head space) are
analyzed on

the following schedule:

Mins. after hour Sample

================ ======

0:00 Low Standard

2:10 Mid Standard

4:25 High Standard

6:40 Reference

8:55 Water

11:28 Water

14:01 Water

16:34 Water

19:07 Water

21:40 Water

24:13 Water

26:46 Water

29:19 Water

31:52 Water

34:25 Water

36:58 Water

39:31 Water

42:04 Water

44:37 Water

47:10 Water

49:43 Water

52:16 Water

54:49 Water

57:22 Water

NOTES ON DATA:

Columns have a default value of -9 in case of instrument malfunction,
erroneous

readings or missing data. Furthermore, if a suspicious xCO2 value,
pressure or

temperature value is encountered, the fCO2 is not calculated.

Analytical Instrument Manufacturer/Model:

The Explorer of the Seas system was built by Dave Chipman in 2000. The

analyzer is a LI-COR 6252 (analog output) infrared analyzer.

Standard Gases and Reference Gas: The three standard gases come from
CMDL

in Boulder and are directly traceable to the WMO scale. The reference
gas

is a non-calibrated gas from a commercial company. While individual data

points above 420 or below 300 may not be accurate, the general trends
should

be indicative of the seawater chemistry.

Description of any additional environmental control:

The system is located in the ocean laboratory of the Explorer of the

Seas. The room is air-conditioned with little temperature fluctuation.

Resolution of measurement:

The resolution of the instrument is better than 0.1 ppm.

Estimated overall uncertainty of measurement:

The xCO2eq measurements are believed accurate to 0.1 ppm. The

fCO2@SST measurements are believed to be precise to 0.2 ppm.

List of calibration gases used:

The standards used on the cruise are:

STANDARD TANK \# CONCENTRATION VENDOR

STD1 CA02040 319.82 CMDL

STD2 CA02030 377.14 CMDL

STD3 CA02020 458.04 CMDL

Traceability to an internationally recognized scale (including
date/place

of last calibration made):

All standards are obtained from NOAA/CMDL, now called the Global

Monitoring Division of the Earth Research Laboratory and are directly

traceable to WHO scale.

Uncertainty of assigned value of each calibration gas:

The uncertainty based on pre and post cruise calibrations is less

than 0.05 ppm.

Pressure/Temperature/Salinity:

Thermosalinograph information can be found at
http://www.rsmas.miami.edu/

rccl/facilities.html.

Units:

All xCO2 values are reported in parts per million (ppm) and fCO2 values

are reported in microatmospheres (uatm) assuming 100% humidity at the

equilibrator temperature.

Bibliography:

DOE (1994). Handbook of methods for the analysis of the various
parameters

of the carbon dioxide system in sea water; version 2. DOE.

Feely, R. A., R. Wanninkhof, H. B. Milburn, C. E. Cosca, M. Stapp

and P. P. Murphy (1998). A new automated underway system for making

high precision pCO2 measurements onboard research ships. Analytica

Chim. Acta 377: 185-191.

Ho, D. T., R. Wanninkhof, J. Masters, R. A. Feely and C. E. Cosca
(1997).

Measurement of underway fCO2 in the Eastern Equatorial Pacific on

NOAA ships BALDRIGE and DISCOVERER, NOAA data report ERL AOML-30,

52 pp., NTIS Springfield.

Wanninkhof, R. and K. Thoning (1993). Measurement of fugacity of CO2 in

Surface water using continuous and discrete sampling methods. Mar.

Chem. 44(2-4): 189-205.

Weiss, R. F. (1970). The solubility of nitrogen, oxygen and argon in
water

and seawater. Deep-Sea Research 17: 721-735.

Weiss, R. F. (1974). Carbon dioxide in seawater: the solubility of a

non-ideal gas. Mar. Chem. 2: 203-215.

Takahashi, T., J. Olafsson, J. G. Goddard, D. W. Chipman, and S. C.

Sutherland (1993), Seasonal variation of CO2 and nutrients in the

high-latitude surface oceans: a comparative study, Global Biogeochem.

Cycles, 7, 843-878.

Comments related to the individual legs:

Explorer of the Seas Naming Convention: EX06NNT where EX is the ship

abbreviation, 07 is the year, NN is the number of the cruise which will

be a number between 1 and 47, and T is the cruise track which will be
either

W for the western cruise track leaving from Miami, Florida, E for the

eastern cruise track leaving from Miami, Florida, N for the northern

cruise track leaving from Bayonne, New Jersey, B for a variation of

the southern cruise track leaving from Bayonne, New Jersey with an

initial port stop in Bermuda, E9 for a variation of the southern

cruise track leaving from Bayonne, New Jersey without a port stop

in Bermuda, and NE for a northern cruise track leaving Bayonne, New

Jersey with port stops in New England and Canada. During the later part

of 2007, there were various nine and twelve day cruises added with
cruise

names that did not follow the standard naming convention.

For all legs, due to the slow response time of the system, the first

10 minutes of data for each hour for the entire leg was removed. This

slow response time is not fully understood. On certain legs the response

time was worse and up to 40 minutes of data was removed.

For all legs, the first hour of data after leaving port is removed.

EX0701: Removed the following questionable data - JD 6.864 to JD 6.95.

EX0702: Some data removed due to fluctuating water flow.

EX0704: Removed the following questionable data - JD 24.187 - JD 24.208.

EX0706: Removed the following questionable data - JD 38.140 - JD 38.208.

EX0712E, EX0713W: The gas flow meter sensor is broken - gas flow is not

being logged.

EX0714W: April 2 - Shailer Cummings replaced the broken gas flow meter.

EX0715W: April 11 - The system was down from JD 101.625 to JD 101.834.

EX0716E: Removed the following questionable data - JD 109.057 to

JD 109.123 and JD 109.939 to JD 110.066.

EX0717W: April 11 - The system was down from JD 101.625 to JD 101.834.

EX0718E: System down on April 30 from 01:26 to 21:34 and on May 1 from

6:59 to 23:57. Liz restarted the system. Change in Eastern cruise

track - five nights at sea instead of seven with port stops in Labadee,

Haiti and Ocho Rios, Jamaica only.

EX0719E: Change in Eastern cruise track - five nights at sea instead

of seven with port stops in Labadee, Haiti and Ocho Rios, Jamaica only.

EX0720B: The ship will be permanently repositioning to Bayonne,

New Jersey (Cape Liberty Cruise Port).

EX0722B: Removed the following questionable data - JD 150.975 to

JD 151.022. May 31 - due to low water flow, the entire seawater system

(including the pCO2 system) was flushed with fresh water. The water flow

in the pCO2 system was still low after the flush.

EX724B: Removed the following questionable data - JD 164.975 to

JD 165.000. June 5 - due to low water flow, the entire seawater system

(including the pCO2 system) was flushed with fresh water. Don then
hooked

up the fresh water line directly to the pCO2 system and flushed the pco2

system for 10 minutes. After the flush, the flow rate was 1.75 lpm. On

June 9, the pCO2 system was flushed again with fresh water for 15 to

20 minutes. After the system was flushed, the flow rate was 1.8 lpm.

On June 10, Don cleaned both the housing and the metal filter in the
pCO2

system. On June 13, the pCO2 system was down from 9:11 to 17:02 for a

ship-wide blackout test. On Sunday, June 17, Kevin Sullivan checked and

cleaned the system.

EX0728B: Intermittent low sample gas flow from July 10 thru July 14.

Questionable data was removed.

EX0729: Due to a buildup of salt in the return line from the dry box to

The equilibrator there was low gas flow in the water phase throughout
most

of the cruise.

EX0730B: Low sample gas flow throughout the cruise - Dennis Pierrot
found

There was a salt buildup in the return line from the dry box to the
equilibator.

He cleaned the line and the sample gas flow returned to normal.

EX0732N: Removed the following questionable data - JD 224.216 to JD
224.375.

EX0733N: Very low sample gas flow throughout the first half of the
cruise -- water

was trapped in the tubing between the headspace pump and the dry box
(J-box).

Don ran air thru the line (tube) for 3 hours to remove the water
blocking the

tube.

EX0734B: Removed the following questionable data - JD 224.216 to JD
224.375.

EX0744E9: Due to the rough seas from Hurricane Noel, there is no data
for

November 3 and November 4. Change in E9 cruise track - 10 days at sea
with

port stops in St. Maarten, St. Thomas, and Puerto Rico.

EX0745BB: This cruise is a variation of the Northern cruise track with a

port stop in Boston, Massachusetts.

EX0746C12: Chip replaced the reference flow meter on 11/17/07. Low water

flow from 11/21/07 (22:11) to 11/22/07 (21:24). This cruise is a
variation

of the Eastern cruise track with 12 days at sea and port stops in St.
Maarten,

Antigua, Dominica, Barbados, St. Kitts, St. Thomas, and Puerto Rico.

EX0747C9: This cruise is a variation of the Eastern cruise track with 10

days at sea and port stops in Haiti, Dominican Republic, St. Thomas and

Puerto Rico.