**LOCAL NOTICE TO MARINERS**

U.S.Department of Transportation United States Coast Guard

MONTHLY EDITION ‑ APRIL 1997

\*\*FAX‑ON‑DEMAND ‑ LOCAL NOTICE TO MARINERS AT (703) 313-5931 or 5932
\*\*

\*\* Electronic Bulletin Board Service: (703) 313-5910 \*\*

**300** **to 28.8 bps, 8 data bite, no parity 1 stop bit**

\*\* NIS watchstander, 24 hours a day at (703) 313‑5900 \*\*

\*\* INTERNET ADDRESS \*\*

**http: // www.navcen.uscg.mil**

OR

**FTP: //ftp.navcen.uscg.mil**

Issued by: Commander (mon) Telephone: (907) 463‑2272 (0800‑1600)

Seventeenth Coast Guard District (907) 463‑2004 (1600‑0800)

P.O. Box 25517

Juneau, AK 99802‑5517 Facsimile:(907) 463‑2273

Questions comments or additional information on this Local Notice to
Mariners or the Local Notice to Mariners mailing list (additions.
deletions. corrections) should

be directed to the address above.

**\***For faster service, get the 17^th^ District Local Notice to
Mariners via e-mail. To get on our electronic mailing list, send us an
e-mail at: **akcgnav@alaska.net**

**[LIGHT LIST REFERENCE: COMDTPUB P16502.6 VOL. VI 1996
EDITION]{.underline}**

BROADCAST NOTICE TO MARINERS

Navigation information. previously promulgated by Broadcast Notice to
Mariners **539/96** through **135/97** and still in effect. is included
in this notice.

USE OF THE LOCAL NOTICE TO MARINERS

The monthly edition of the Local Notice to Mariners contains information
relevant to the waterways within the Seventeenth Coast Guard District.
This monthly edition should be retained as a reference for subsequently
issued weekly supplements.

**I [SPECIAL NOTICES]{.underline}**

**DISCREPANCY REPORTS OF THE MARINE DIFFERENTIAL GLOBAL POSITIONING
SYSTEM (DGPS)**

The U.S Coast Guard is in the Initial Operational Capability (IOC) phase
of the marine DGPS service. During IOC, the DGPS service is available
for positioning and navigation. However, users are always cautioned to
use all available navigational tools to ensure proper evaluation of
positioning solutions. During this IOC phase, system validation tests
are being conducted, procurement and installation of the next generation
of transmitters are being pursued, the control station software is being
upgraded and other problems identified during the pre-operational and
IOC phases are being resolved.

To facilitate the evaluation and development of the final DGPS service,
reports of DGPS discrepancies are highly beneficial. To ensure timely
and complete information, users discrepancy reports are requested in the
following format:

[DGPS User Discrepancy Report]{.underline}

A. Date:

B. Reporting source:

C. Reporting source phone number (day/night):

D. Reporting source position (Lat/Long/general geographic location):

E. Date/time of event:

F. Duration of the occurrence:

G. Reporting source activity:

H. Weather conditions:

I. Bearing and range of electrical storm:

J. DGPS broadcast site in use:

K. Type of DGPS receiver used:

L. Problem DGPS receiver indicated:

M. Other receiver indications:

N. DGPS beacon signal strength observed:

O. DGPS beacon signal to noise ratio observed:

P. User DGPS receiver operates correctly with other DGPS sites: Y/N

Q. Does receiver function properly in GPS mode of operation: Y/N

R. Comments:

**[REPORT DEFECTS IN AIDS TO NAVIGATION TO THE NEAREST COAST GUARD
UNIT]{.underline}**

**I [SPECIAL NOTICES]{.underline} (Cont.)**

This information can be sent in the following ways:

1.  Via mail to: Commanding Officer / NIS

7323 Telegraph Rd.

Alexandria, VA 22315-3998

2.  Via message to: COGARD NAVCEN ALEXANDRIA VA/NIS

3.  Via fax to: (703) 313-5920

4.  Via internet e-mail to: nisws@smtp.navcen.uscg.mil

5.  Or by calling the NIS watchstander at (703) 313-5900

**KODIAK - LORAN-C - PROPOSED OFF-AIR**

This is a proposal to authorize Loran Station Kodiak (7960-X/9990-Z)
off-air time from 1800Z to 2000Z on 19 Jun 1997. The alternate time will
be from 1800Z to 2000Z on 25 Jun 1997. Objections will be considered
until 1800Z on 13 Jun 1997. Users shall address inquiries to the North
Pacific Coordinator of Chain Operations at (907) 487-5183. Current
Loran-C status is available 24 hours a day through an electronic
bulletin board system (BBS) at (703) 313-5910, baud rate 300 to 28,800.
Communications parameters are eight bit word, one stop bit, no parity.
Internet address: http://www.navcen.uscg.mil

**KODIAK - ST. HERMAN HARBOR - DREDGING**

Aqua-Marine Constructors, Inc. will be resuming work in St. Herman
Harbor, Kodiak, Alaska on or about April 01, 1997. Construction activity
will begin with dredging the maneuvering channel along the northwest
side of the boat harbor. This will restrict access in the area of "G",
"H" and "I" floats from 7:00 A.M. to 6:30 P.M. daily through April 30,
1997. At the completion of the dredging, the dredge will be moved to the
harbor side of the Main Breakwater at the southwest entrance of the
harbor. The dredge will be positioned out of the channel and should not
interfere with vessel traffic. Yellow buoys mark the location of the
dredge anchors. Cables run from the anchors to the dredge. **Mariners
should not travel between these buoys and the dredge**. Boats and
dredges will be standing by on VHF channels 12, 16 and 66. Any questions
should be directed to Aqua-Marine Constructors at (503) 245-2424, (907)
486-6267 or in the evenings at (503) 625-2727.

**ALASKA - GULF OF ALASKA - BERING SEA - SUBSURFACE MOORINGS**

The following are deployment times and locations of subsurface moorings
in the Gulf of Alaska. (Shelikof Strait and Unimak Pass)

[Mooring]{.underline} [Deployed]{.underline} [Recovery]{.underline}
[Location]{.underline} [Depth]{.underline}

Pavlof Bay March 1997 March 1998 5511.24'N 16142'W 101 meters

PG-96UP-1 September 1996 October 1997 5421'N 16403'W 100 meters

\*This mooring has a float 5 meters above bottom depth.

PG-96UP-2 September 1996 October 1997 5416.2'N 16446.8'W 70 meters

\*This mooring has an instrument and float at 11 meters above bottom
depth.

PG-96UP-3 September 1996 October 1997 5419'N 16445'W 70 meters

\*This mooring has an instrument and float at 11 meters above bottom
depth.

PG-96UP-4 September 1996 October 1997 5422'N 16543.5'W 60 meters

\*This mooring has an instrument and float at 11 meters above bottom
depth.

PG-96UP-5 September 1996 October 1997 5421'N 16545'W 100 meters

\*This mooring has a float 5 meters above bottom depth.

Following are locations and deployment times of surface and subsurface
moorings in the Bering Sea:

[Buoy]{.underline} [Deployed]{.underline} [Recovery]{.underline}
[Location]{.underline} [Depth]{.underline}

F-96BS-2 February 1997 April 1997 5652.47'N 16402.08'W 72 meters

\*Two subsurface moorings. One mooring has floats and instruments from
10 meters to 65 meters below the surface. A lighted surface marker buoy
was also deployed.

March 1997 September 1997 5652'N 16402'W

One surface moored instrument buoy. One mooring is a trawl resistant
design on the seafloor.

F-96BS-3 February 1997 April 1997 5603.8'N 16620.43'W 120 meters

\*One subsurface mooring with floats and instruments 8 meters below the
surface. A lighted surface marker buoy was also deployed.

March 1997 September 1997 5603'N 16620'W

\*One surface moored instrument buoy.

F-96BS-4 September 1996 September 1997 5751'N 16852'W 65 meters

\*One subsurface mooring with floats and instruments from 11 to 55
meters below the surface.

Two subsurface moorings were deployed in April 1996 southwest of Unimak
Pass in the Bering Sea. Each has floats and instruments from 150 to 1000
meters+ below the surface.

F-96BS-6 April 1996 April 1998 5341'N 16855'W 1,000 meters

F-96BS-7 April 1996 April 1997 5410'N 16900'W 2,000 meters

For additional information, please contact Mr. William Parker at (206)
526-6180, E-mail: **parker@pmel.noaa.gov**

**II [DISCREPANCIES ‑ DISCREPANCIES CORRECTED]{.underline}**

**WARNING:** Mariners are cautioned that portions of destroyed
structures may remain visible or may be submerged.

Abbreviations normally used in the Local Notice to Mariners are as
follows:

**BNM** - Broadcast Notice to Mariners **TRLB** - Temporarily Replaced
by Lighted Buoy

**LNM** - Local Notice to Mariners **TRUB** - Temporarily Replaced by
Unlighted Buoy

**TLB** - Temporary Lighted Buoy **TUB** - Temporary Unlighted Buoy

**TDBN** - Temporary Daybeacon

**DISCREPANCIES:**

[LLNR NAME OF AID STATUS CHART BNM LNM]{.underline}

22429.5 Thorne Bay Channel Daybeacon \"7\" Destroyed 17405 657/96 48/96

**DISCREPANCIES/PRIVATE AIDS:**

[LLNR NAME OF AID STATUS CHART BNM LNM]{.underline}

26007 Seward Forest Dock Mooring Lights (2) Extinguished 16682 539/96
39/96

**DISCREPANCIES CORRECTED:**

[LLNR NAME OF AID STATUS CHART BNM LNM]{.underline}

23775 Point Hilda Light Watching Properly 17316 131/97 14/97

23205 Wrangell Narrows Channel Lighted Buoy "62" Watching Properly 17375
129/97 14/97

**III [TEMPORARY CHANGES ‑ TEMPORARY CHANGES CORRECTED]{.underline}**

**TEMPORARY CHANGES:**

[LLNR NAME OF AID STATUS CHART BNM LNM]{.underline}

26250 Anchor Point Light Fl W 6s 7M 16645 437/96 30/96

**IV [CHART CORRECTIONS]{.underline}**

Corrective action affecting charts is contained in this section. Chart
corrections are listed numerically by chart number, beginning with the
lowest and progressing through all charts affected. The example below
explains the individual elements of a typical correction.

**Last Local**

**Chart** **Chart** **Edition** **Notice to** **Chart** **Source of**
**Current Local**

**Number** **Edition** **Date** **Mariners \#** **Datum** **Correction**
**Notice to Mariners**

**/ / / \\ \| \| /**

**\*16682** 13th Ed. 02/10/90 Last LNM 34/95 **NAD 83** (CCGD17) 05/97

AK ‑ Kenai Peninsula - Cape Resurrection to Two Arm Bay (Inset)

Change: depth legend to: Reported dredged 55ft 1995 60°07\'00.0"N
149°25\'43.0\"W

**\| \\ \| / \\ /**

**Corrective action** **Object of corrective action Position**

A chart number preceded by an asterisk **(\*)** indicates this is the
largest scale chart on which the correction appears. The word **(temp)**
below the chart number indicates the chart correction is temporary in
nature.

The letter **(M)** immediately following the chart number indicates the
correction should be applied to the metric side of the chart only, and
is not part of the chart number.

Positions given for chart corrections will be in the datum referenced by
the current edition for that chart.

\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

**16709** 21st Ed. 06/29/96 Last LNM 49/96 **NAD 83** (CCGD17) 14/97

AK ‑ Prince William Sound - Eastern Entrance

Delete: five Fl 4s buoys and legends: "Log Storage", "Priv aids"
60°34\'05.0"N 145°44\'45.0\"W

**\*16710** 15th Ed. 01/05/91 Last LNM 49/96 **NAD 83** (CCGD17) 14/97

AK ‑ South Coast - Prince William Sound - Orca Bay and Inlet

Delete: five Fl 4s buoys and legends: "Log Storage", "Priv aids"
60°34\'05.0"N 145°44\'45.0\"W

**\*17363** 11th Ed. 04/27/91 Last LNM 10/97 **NAD 83** (H-10672 & 73)
14/97

AK ‑ Southeast - Frederick Sound - Pybus Bay - Stephens Passage

Substitute : depth, 1 ½ fathoms for 3 ¼ fathoms 57°14\'24.9"N
134°06\'29.2\"W

depth, 7 ¾ fathoms for 13 fathoms 57°17\'39.3"N 133°59\'27.9\"W

depth, 10 ¼ fathoms for 13 fathoms 57°17\'42.0"N 134°01\'46.1\"W

Add : rock, 3 fathoms 57°15\'35.1"N 134°05\'20.3\"W

depth, 3 ½ fathoms 57°14\'10.3"N 134°07\'40.1\"W

depth, 3 fathoms 57°14\'17.5"N 134°06\'01.3\"W

**IV [CHART CORRECTIONS]{.underline} (Cont.)**

**\*17363** 11th Ed. 04/27/91 Last LNM 10/97 **NAD 83** (H-10672 & 73)
14/97

AK ‑ Southeast - Frederick Sound - Pybus Bay - Stephens Passage

depth, 6 ¼ fathoms 57°14\'18.2"N 134°05\'35.4\"W

depth, 7 ½ fathoms 57°17\'21.7"N 134°05\'02.3\"W

depth, 8 ¾ fathoms 57°16\'08.0"N 134°03\'50.0\"W

depth, 10 fathoms 57°17\'02.4"N 133°58\'17.8\"W

depth, 10 fathoms 57°17\'04.8"N 133°57\'48.1\"W

depth, 10 ¼ fathoms 57°17\'15.9"N 133°57\'34.0\"W

depth, 11 fathoms 57°17\'34.5"N 133°57\'04.2\"W

rock, 3 fathoms 57°19\'30.1"N 134°06\'50.5\"W

depth, 7 ¾ fathoms 57°19\'27.3"N 134°07\'53.7\"W

rock, 6 fathoms 57°19\'34.9"N 134°08\'07.7\"W

depth, 2 ¾ fathoms 57°19\'45.0"N 134°08\'25.9\"W

depth, 5 ½ fathoms 57°20\'04.3"N 134°08\'36.6\"W

depth, 4 ¾ fathoms 57°21\'55.2"N 134°09\'58.6\"W

depth, 9 ¼ fathoms 57°22\'46.0"N 134°10\'00.6\"W

rock, 2 ¼ fathoms 57°22\'39.9"N 134°10\'40.2\"W

depth, 4 fathoms 57°22\'49.3"N 134°10\'38.1\"W

depth, 8 ¼ fathoms 57°20\'14.5"N 134°09\'14.5\"W

**V [ADVANCE NOTICE OF CHANGES IN AIDS TO NAVIGATION]{.underline}**

NONE.

**VI [PROPOSED CHANGES IN AIDS TO NAVIGATION]{.underline}**

NONE.

**VII [GENERAL]{.underline}**

**ALASKA - SEASONAL AID DECOMMISSIONINGS**

The following aids to navigation were temporarily commissioned for a
navigational study. They have now been decommissioned until
approximately 01 May 1997.

Holkham Bay Range Front Light (LLNR 23625)

Holkham Bay Range Rear Light (LLNR 23630)

The Mendenhall Bar Buoys (about 14) (LLNR 23735) have been commissioned
for the season.

**VIII [LIGHT LIST CORRECTIONS]{.underline}**

NONE.

**IX [ADDITIONAL ENCLOSURES]{.underline}**

NONE.

K. A. Hamblett

Commander, U.S. Coast Guard

Waterways Management and Navigation Safety Branch

Seventeenth Coast Guard District

By direction of the Commander

**Operational Excellence Through Leadership, Teamwork**

**and Continuous Improvement**