NOAA ENC

NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION

US4AK7MP - ALASKA:

INDEX:

AUTHORITIES
AIDS TO NAVIGATION
NOTE A		
WARNING - PRUDENT MARINER
POLLUTION REPORTS
SUPPLEMENTAL INFORMATION
CAUTION - TEMPORARY CHANGES
CAUTION - MARINERS
CAUTION - DEPTHS
CAUTION - LIMITATIONS
RACON		
COLREGS, 80.1705 (see note A)
SUBSISTENCE WHALING IN THE BEAUFORT SEA
MINERAL DEVELOPMENT STRUCTURES
ADDITIONAL INFORMATION
TIDAL INFORMATION
	
NOTES:
AUTHORITIES
Hydrography and topography by the National Ocean Service, Coast
Survey, with additional data from the Geological Survey, U.S. Coast
Guard, and the State of Alaska.

AIDS TO NAVIGATION
Consult U.S. Coast Guard Light List for
supplemental information concerning aids to
navigation.

NOTE A
Navigation regulations are published in
Chapter 2, U.S. Coast Pilot 8.  Additions or
revisions to Chapter 2 are published in the
Notice to Mariners.  Information concerning
the regulations may be obtained at the Office
of the Commander, 17th Coast Guard District
in Juneau, Alaska, or at the Office of the District
Engineer, Corps of Engineers in Anchorage,
Alaska.
Refer to charted regulation section numbers. 

WARNING - PRUDENT MARINER
The prudent mariner will not rely solely on
any single aid to navigation, particularly on
floating aids.  See U.S. Coast Guard Light List
and U.S. Coast Pilot for details.

POLLUTION REPORTS
Report all spills of oil and hazardous substances to
the National Response Center via 1-800-424-8802 (toll free)
to the nearest U.S. Coast Guard facility if telephone co-
mmunication is impossible (33 CFR 153).

SUPPLEMENTAL INFORMATION
Consult U.S. Coast Pilot 9 for important
supplemental information.

CAUTION - TEMPORARY CHANGES
Temporary changes or defects in aids to
navigation are not indicated. See
Local Notice to Mariners.


CAUTION - MARINERS
Mariners are advised that in the shallow
waters of the Beaufort Sea, water levels are
strongly influenced by meteorological con-
ditions.  Strong offshore winds can produce
water depths up to 0.8 meters/2.6 feet less
than those shown.

CAUTION - DEPTHS
Depths may vary as much as 6 feet due
to iceberg groundings.

CAUTION - LIMITATIONS
Limitations on the use of radio signals as
aids to marine navigation can be found in the
U.S. Coast Guard Light Lists and National
Geospatial-Intelligence Agency Publication 117.
Radio direction-finder bearings to commercial
broadcasting stations are subject to error and
should be used with caution.


RACON
Radar Transponder Beacons, or RACONS,
are activated by radars operating on the X-
band, frequencies 9300 to 9450 MHz and,
when activated will emit an international morse
code character which will be visible on the
radar screen that activated the RACON.  The
effective range of the RACONS will be from 11
to 27 miles.
The RACONS will be maintained seasonally
from 1 July to 15 September.

COLREGS, 80.1705 (see note A)
International Regulations for Preventing Collisions at Sea, 1972.
The entire area of this chart falls seaward of the COLREGS Demarcation Line.

SUBSISTENCE WHALING IN THE BEAUFORT SEA
Mariners should be aware that Alaskan Natives engage in
subsistence whaling in the Beaufort Sea from August 15
to October 31.  Vessel operators are requested to contact
the Alaska Eskimo Whaling Commission at (907) 852-2392,
or aewcdir@barrow.com prior to entering this area for infor-
mation about the location and avoidance of traditional Native
hunting parties.

MINERAL DEVELOPMENT STRUCTURES
Obstruction lights and sound (fog) signals
are required for fixed mineral development
structures shown, subject to
approval by the District Commander, U.S.
Coast Guard (33 CFR 67).

ADDITIONAL INFORMATION
Additional information can be obtained at www.nauticalcharts.noaa.gov


TIDAL INFORMATION
For tidal information, see the NOS tide table publication or go to http://co-ops.nos.noaa.gov


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