NOAA ENC

NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION

US4AK6BN - ETOLIN STRAIT, ALASKA


INDEX:

NOTE A
AIDS TO NAVIGATION
SUPPLEMENTAL INFORMATION
CAUTION - TEMPORARY CHANGES
POLLUTION REPORTS
WARNING - PRUDENT MARINER
COLREGS, 80.1705 (see note A)
ADDITIONAL INFORMATION
RADAR REFLECTORS
CAUTION - QUALITY OF BATHYMETRIC DATA
WATER LEVELS, CURRENTS, AND TIDES
ADMINISTRATION AREA
COMMENTS REQUESTED 


NOTES:

NOTE A
Navigation regulations are published in Chapter 2, U.S. Coast Pilot 9.  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.


AIDS TO NAVIGATION
Consult U.S. Coast Guard Light List for supplemental information concerning aids to navigation.  See National Geospatial-Intelligence Agency Center List of Lights and Fog Signals for information not included in the U.S.Coast Guard Light List.


SUPPLEMENTAL INFORMATION
Consult U.S. Coast Pilot 9 and National Geospatial-Intelligence Agency Pub 152 for important supplemental information.


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


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


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.


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.


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


RADAR REFLECTORS
Radar reflectors have been placed on many floating aids to navigation. Individual radar reflector identification on these aids has been omitted from this chart.


CAUTION - QUALITY OF BATHYMETRIC DATA
The areas represented by the object M_QUAL (Quality of Data) are approximate due to generalizing for clarity. Caution is advised, particularly for nearshore navigation or voyage planning. M_QUAL represents areas of uniform quality of bathymetric data. The CATZOC (Category of Zone of Confidence in Data) attribute of M_QUAL provides an assessment of the overall zone of confidence.


WATER LEVELS, CURRENTS, AND TIDES
Real-time water levels, tide predictions, and tidal current predictions are available on the internet from NOAA's Center for Operational Oceanographic Products and Services (CO-OPS) at https://tidesandcurrents.noaa.gov/water_level_info.html and https://tidesandcurrents.noaa.gov/currents_info.html.


ADMINISTRATION AREA
The entire extent of this ENC cell falls within the limits of an Administration Area. This area covers land, internal waters, and territorial sea.  The territorial sea is a maritime zone over which the United States exercises sovereignty extending to the airspace as well as to its bed and subsoil.  For more information, please refer to the Coast Pilot.


COMMENTS REQUESTED 
NOAA encourages users to submit inquiries, discrepancies, or comments about this chart via NOAA's ASSIST tool at https://www.nauticalcharts.noaa.gov/customer-service/assist/ .


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