NOAA ENCŪ NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION US4AK4QO - PRINCE WILLIAM SOUND, ALASKA INDEX: NOTE A AIDS TO NAVIGATION POLLUTION REPORTS CAUTION - USE OF RADIO SIGNALS (LIMITATIONS) SUPPLEMENTAL INFORMATION CAUTION - TEMPORARY CHANGES WARNING - PRUDENT MARINER ADDITIONAL INFORMATION AUTHORITIES CAUTION - SIGNIFICANT CHANGES CAUTION - MONTAGUE ISLAND CAUTION - QUALITY OF BATHYMETRIC DATA CAUTION - SUBMARINE PIPELINES AND CABLES COLREGS, 80.1705 NOAA WEATHER RADIO BROADCASTS RADAR REFLECTORS WATER LEVELS, CURRENTS, AND TIDES 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. 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). 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. 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. 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. ADDITIONAL INFORMATION Additional information can be obtained at www.nauticalcharts.noaa.gov. AUTHORITIES Hydrography and topography by the National Ocean Service, Coast Survey, with additional data from the U.S. Coast Guard. CAUTION - SIGNIFICANT CHANGES Significant changes in depths and shoreline have occurred in the area of this chart as a result of the earthquake of March 27, 1964. Some areas have not been re-surveyed since that time and may reflect pre-earthquake conditions. Mariners are urged to use extreme caution when navigating in areas indicated as pre-1970 hydrography. Some of the shoreline has not been verified since the earthquake. CAUTION - MONTAGUE ISLAND Mariners are urged to exercise extreme care while transiting the waters adjacent to the 18.2 meters/10 fathom curve around Montague Island. Numerous uncharted rocks and islets are known to exist in these areas. Some of the inshore waters have not been surveyed since the 1964 earthquake, consequently the presence of underwater dangers is conceivable. 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. 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. COLREGS, 80.1705 International Regulations for Preventing Collisions at Sea, 1972. The entire area of this chart falls seaward of the COLREGS Demarcation Line. 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. Rugged I, AK WNG-526 162.425 MHz Point Pigot, AK KZZ-93 162.450 MHz Cape Hinchinbrook WNG-532 162.525 MHz Potato Point, AK WNG-527 162.425 MHz Seward, AK KEC-81 162.550 MHz Whittier, AK KXI-29 162.400 MHz East Point, AK WNG-530 162.500 MHz 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. 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. 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