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LOCAL NOTICE TO MARINERS LOCAL NOTICE TO MARINERS
MONTHLY EDITION
____________________________________________________________________________________
______________________________________________
Issued by: Commander, Ninth Coast Guard District (oan), 1240 East Ninth Street, Cleveland, OH 44199-
2060 Telephone: (216) 902-6073
All times shown in local time unless otherwise noted. Positions are in degrees, minutes, seconds, and
tenths of seconds. Numbers within
brackets [ / ] refer to the LNM where information was first printed. Direct questions about this LNM to the
above address.
USE OF THE LOCAL NOTICE TO MARINERS
The Monthly edition of the Local Notice to Mariners contains all information relevant to the waterways
within the Ninth Coast Guard District.
This Monthly edition should be retained as a reference for subsequently issued Weekly Supplements.
** Electronic Bulletin Board Service: (703)313-5910**
300 to 28.8 bps, 8 data bits, no parity, 1 stop bit
** NIS watchstander, 24 hours a day at (703)313-5900 **
**Internet Address **
HTTP:2//www.navcen.uscg.mil or
FTP://ftp.navcen.uscg.mil
BROADCAST NOTICE TO MARINERS (BNM) are issued by Ninth District and all Group Offices for
their areas of responsibility. Navigation
information having been of immediate concern to the Mariner, the following broadcasts have been
incorporated into this LNM when still significant:
Ninth District
C023-97
through C024-97
Group Buffalo, NY
B028-97
through
B030-97
Group Detroit, MI
D051-97
through D055-97
Group Grand Haven, MI
G022-
97
through G024-97
Group Milwaukee, WI
M034-97
through M039-97
Group Sault Ste Marie, MI
S070-
97
through S075-97
Light List Reference: Commandant Publication P16502.7, VOL VII, 1996 Edition / Coast Pilot Reference:
U.S. Coast Pilot 6 Great Lakes 1996 Edition
REPORT DISCREPANCIES IN AIDS TO NAVIGATION TO THE NEAREST COAST
GUARD UNIT
I.
SPECIAL NOTICES GREAT LAKES AIDS TO NAVIGATION COMMISSIONING INFORMATION
The U. S. Coast Guard will provide information concerning the commissioning of lighted floating aids in
the Great Lakes critical waterways. This
information will be provided only upon request. For the St. Marys River, contact: SOO CONTROL -
Commander, U. S. Coast Guard Group Sault Ste.
Marie, Sault Ste. Marie, MI 49783-9501 (906) 635-3232. For the East Outer Channel, Detroit River,
Lake St. Clair Main Channel and the St. Clair
River contact: SARNIA TRAFFIC - Coast Guard Traffic Centre Sarnia, 105 Christina St. South, P.O.
Box 2778, Sarnia, Ontario N7T 7W1 (519) 337-6360.
A checkoff list for the commissioning of aids in these waterways is listed in enclosure (1) of LNM 02/97.
[02/97]
GREAT LAKES - Dates of Latest Editions
The Dates of Latest Editions, Nautical Charts and Miscellaneous Maps, dated April 1, 1997,
published by the National Ocean Service, is available for issue. It
may be obtained free from the
Distribution Division, N/ACC3, National Ocean Service, 6501 Lafayette Avenue, Riverdale, MD,
20737-1199. This is a
quarterly publication listing the most recent editions of nautical charts,
miscellaneous maps and publications relating to navigation, weather, etc. with brief
descriptions and
prices of each.
[05/97]
GREAT LAKES - Information
Any person seeing any illegal or suspicious activity on the water such as marine pollution, smuggling of
contraband or drugs, unauthorized entry into the
United States by non-citizens, or illegal fishing activity are requested to call your local Coast Guard
station or the Coast Guard Investigative Service at (216)
902-6136.
[01/97]
GREAT LAKES - Differential GPS
1.
The U. S. Cast Guard is in the Initial Operational Capability (IOC) phase of
the marine Differential GPS 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. 2.
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 required in the following format:
DGPS USER DISCREPANCY REPORT
A. DATE:
B. REPORTING SOURCE:
C. REPORTING SOURCE PHONE NUMBER (DAY/NIGHT):
D. REPORTING SOURCE POSITION:_________________________N/S
_________________________W/E
E. DATE/TIME OF EVENT:
F. DURATION OF THE OCCURRENCE:
G. REPORTING SOURCE ACTIVITY:
H. ENVIRONMENTAL CONDITIONS (WX):
I.
BEARING AND RANGE TO ELECTRICAL STORM:_________T/__________NM
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 SITE (S): Y/N
Q. DOES RECEIVER FUNCTION PROPERLY IN GPS MODE OF OPERATION
R. COMMENTS:
3.
This information can be sent 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. 4.
For the current status of DGPS broadcast sites or if you require additions
information contact the NIS watchstander at (703) 313-5900. The NIS computer
bulletin board may be accessed at (703) 313-5910 (300-14400 BPS), communication parameters are 8
data bits, 1 stop bit and no parity. Internet
WWW.NAVCEN.USCG.MIL.
[01/97]
GREAT LAKES - Coast Pilot
Enclosure (1) of LNM 01/97 contains change No. 7 to U. S. Coast Pilot 6.
[01/97]
GREAT LAKES - Coast Pilot
Enclosure (2) of LNM 01/97 contains change No. 8 to U. S. Coast Pilot 6.
[01/97]
ST. LAWRENCE SEAWAY NOTICE 3 - GENERAL NOTICE
1.
EASTERN STANDARD TIME/DAYLIGHT SAVINGS TIME
The Seaway entities will be operating on Eastern Standard Time from the opening of the navigation
season until 0200 hours on April 6, 1997, at which
time Eastern Daylight Saving Time will become effective. At 0200 hours on October 26, 1997, the
operating time will revert to Eastern Standard time.
2.
SEAWAY DRAFTS
Montreal-Lake Ontario Section - As of 0001 hour April 15, 1997, the maximum permissible draft of 79.2
decimeters (260) in the Montreal-Lake Ontario
section of the Seaway will be increased to 80.0 decimeters (263). This draft will remain in effect until
December 15, 1997 or until such time as changing
water levels necessitate a draft reduction, whichever occurs first. Welland Canal - The maximum
permissible draft in the Welland Canal will be 80.0
decimeters (263) for the duration of the entire 1997 navigation season, unless changing water levels on
Lake Ontario necessitate a draft reduction. It is the
responsibility of the master to ensure that the permissible drafts are not exceeded. Overdraft vessels
create scheduling problems and are a source of delay to
users, especially if discharge of cargo is required. During hot weather, the masters must be aware of
hogging conditions and allow for this within the
permissible draft.
3.
SPEED LIMITS
The speed limits indicated in Column III, of the attached schedule of speed limits, will be in effect as of
the opening of the navigation season. Vessels must
operate within the established speed limits. A speed enforcement program will be carried out throughout
the navigation season (enclosure 2 of LNM 07/97). 4.
CHANGE IN LOCK OPERATING PROCEDURE
At Locks 1, 2, 3, and 4, Montreal-Lake Ontario section, and Locks 1, 2, 4, 5, 6, and 7, Welland Canal,
lock wall controls will be in use and the Lock Operator
will therefore remain on the wall throughout. At the U. S. locks 5 and 6, lock wall controls are in place to
expedite downbound lockages. At Lock 8, Welland
Canal, the Lock Operator will remain in the control room and a two man crew will be in attendance on the
lock wall.
5.
VISIBILITY FROM WHEELHOUSE
Mariners are reminded of the importance of having good visibility from the wheelhouse when navigating
in confined waters, particularly at night.
Obstructions to forward visibility must be avoided; whenever possible deck cargo, derricks or cranes are
to be stowed, and the vessel is to be trimmed in
such a manner as to provide optimum forward visibility from the conning position.
6.
VESSEL EQUIPMENT
Accidents and potentially serious incidents have occurred due to malfunctions of essential equipment
and, sometimes, to the failure of ships personnel to
understand their equipment. Mariners are reminded that: (a) all commercial vessels are required to
carry the latest charts and publications for their Seaway
transit and to maintain them corrected up to date; (b) the steering gear must be maintained in the best
possible condition and is to be operated to
give maximum steering efficiency. All watchkeeping officers and helmsmen must be fully conversant
with backup systems available and know how to
change over to them in an emergency.