NOAA ENCŪ NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION US3AK3UM - FREDERICK SOUND AND STEPHENS PASSAGE; HOLKHAM BAY; BIG CASTLE ISLAND INDEX: NOTE A AIDS TO NAVIGATION SUPPLEMENTAL INFORMATION CAUTION - TEMPORARY CHANGES CAUTION - USE OF RADIO SIGNALS (LIMITATIONS) NOAA WEATHER RADIO BROADCASTS POLLUTION REPORTS COLREGS, 80.1705 CAUTION - SUBMARINE PIPELINES AND CABLES AUTHORITIES CAUTION - QUALITY OF BATHYMETRIC DATA WARNING - PRUDENT MARINER VEGETATION RADAR REFLECTORS VESSEL TRANSITING WATER LEVELS, CURRENTS, AND TIDES ADDITIONAL INFORMATION COMMENTS REQUESTED NOTES: 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. AIDS TO NAVIGATION Consult U.S. Coast Guard Light List for supplemental information concerning aids to navigation. SUPPLEMENTAL INFORMATION Consult U.S. Coast Pilot 8 for important supplemental information. CAUTION - TEMPORARY CHANGES Temporary changes or defects in aids to navigation are not indicated. See Local Notice to Mariners. CAUTION - USE OF RADIO SIGNALS (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. NOAA WEATHER RADIO BROADCASTS The NOAA Weather Radio stations listed below provide continuous weather broadcasts. The reception range is typically 20 to 40 nautical miles from the antenna site, but can be as much as 100 nautical miles for stations at high elevations. Mt. Robert Barron, AK KZZ-87 162.450 MHz Mt. McArthur, AK KZZ-95 162.525 MHz Sukkwan I, AK KZZ-89 162.425 MHz Cape Fanshaw, AK KZZ-88 162.425 MHz Zarembo I, AK KZZ-91 162.450 MHz Gravina I, AK KZZ-96 162.525 MHz Duke I, AK KZZ-92 162.450 MHz Craig, AK KXI-80 162.475 MHz Juneau, AK WXJ-25 162.550 MHz Ketchikan, AK WXJ-26 162.550 MHz Wrangell, AK WXJ-83 162.400 MHz 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). COLREGS, 80.1705 International Regulations for Preventing Collisions at Sea, 1972. The entire area of this chart falls seaward of the COLREGS Demarcation Line. CAUTION - SUBMARINE PIPELINES AND CABLES Additional uncharted submarine pipelines and submarine cables may exist within the area of this chart. Not all submarine pipelines and submarine cables are required to be buried, and those that were originally buried may have become exposed. Mariners should use extreme caution when operating vessels in depths of water comparable to their draft in areas where pipelines and cables may exist, and when anchoring, dragging, or trawling. Covered wells may be marked by lighted or unlighted buoys. AUTHORITIES Hydrography and topography by the National Ocean Service, Coast Survey with additional data from the Geological Survey, and U.S. Coast Guard. 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. 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. VEGETATION The land is generally heavily wooded. The woods decrease in density with the elevation, leaving the higher elevations bare. 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. VESSEL TRANSITING The U.S. Coast Guard and the Pacific States/British Columbia Oil Spill Task Force endorse a system of voluntary measures and minimum distances from shore for certain commercial vessels transiting along the coast anywhere between Cook Inlet, Alaska and San Diego, California. See U.S. Coast Pilot 8, Chapter 3 for details. 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. ADDITIONAL INFORMATION Additional information can be obtained at http://nauticalcharts.noaa.gov. 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/. END OF FILE