NOAA ENCŪ

NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION

US1GLBCA - NORTH PACIFIC OCEAN - MIDWAY ATOLL TO HAWAI'I


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
HORIZONTAL DATUM
CAUTION - DANGER
CAUTION - QUALITY OF BATHYMETRIC DATA
CAUTION - SUBMERGED
COPYRIGHT
HAWAIIAN ISLANDS NATIONAL WILDLIFE REFUGE
NOAA WEATHER RADIO BROADCASTS
SUBMERGED SUBMARINE OPERATIONS
RADAR REFLECTORS
CAUTION - SUBMARINE PIPELINES AND CABLES
SUBMERGED SUBMARINE OPERATING AREAS
SYMBOLS AND ABBREVIATIONS
WATER LEVELS, CURRENTS, AND TIDES
COMMENTS REQUESTED


NOTES:

NOTE A
Navigation regulations are published in Chapter 2 of each regional U.S. Coast Pilot. Additions or revisions to Chapter 2 are published in the Notice to Mariners. Information concerning the regulations may be obtained from the Coast Guard District Commander. 
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 10 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 Geological Survey, National Geospatial-intelligence Agency, Corps of Engineers, U.S. Coast Guard, British Admiralty, Canadian Hydrographic Service, Japanese Hydrographic Department and other sources.


HORIZONTAL DATUM
The NOAA ENC references the World Geodetic System of 1984 (WGS-84). For charting purposes, the horizontal control of the current realization of WGS-84 is functionally equivalent to the International Terrestrial Reference Frame 2020 (ITRF2020) at the meter level for charts at scales of 1:5,000 or smaller.


CAUTION - DANGER
Danger, Prohibited, and Restricted Areas falling within the limits of the larger scale charts are shown thereon and not repeated.


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 - SUBMERGED
Submerged Submarine Operating Areas falling within the limits of the larger scale charts are shown thereon and not repeated.


COPYRIGHT
No copyright is claimed by the United States Government under Title 17 U.S.C. However, other nations may claim intellectual property rights on the compilation of data depicting the foreign waters shown on this chart.


HAWAIIAN ISLANDS NATIONAL WILDLIFE REFUGE
The Hawai'ian Islands from longitude 161° W to 176° W are part of the Hawaiian Island National Wildlife Refuge, and under the jurisdiction of the U.S. Fish and Wildlife Service, Department of the Interior. The islands and atolls in the refuge include Nihoa, Necker Island, French Frigate Shoals, Gardner Pinnacles, Maro Reef, Laysan Island, Lisianski Island, Pearl and Hermes Atoll. National Wildlife Refuge System regulations pertaining to these islands and atolls contained in CFR 50, parts 25-32.Entry to the refuge is strictly prohibited without prior approval from the Refuge Complex, U.S. Fish and Wildlife Service, 300 Ala Moana Blvd, Honolulu, Hawaii 96850.The restrictions apply to all civilian and military agencies as well as individuals.


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.

Hawaii Kai, HI          WWF-39         	162.450 MHz
Kauai, HI		WWG-74		162.400 MHz
Kulani Cone, HI         WWG-76		162.550 MHz
Lihue, HI		WZ-2557         162.450 MHz
Maui, HI		WWG-75		162.400 MHz
North Kohala, HI        WZ-2540         162.500 MHz
Oahu, HI		KBA-99          162.550 MHz
South Point, HI         WWG-27		162.550 MHz


SUBMERGED SUBMARINE OPERATIONS
Submerged submarine operations are conducted at various times in the waters contained on this chart. Proceed with caution.


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 - 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.


SUBMERGED SUBMARINE OPERATING AREAS
Boundary limits of Submerged Submarine Operating Areas are shown, as submarines may be submerged in these areas, vessels should proceed with caution. During torpedo practice firing, all vessels are cautioned to keep well clear of Naval Target Vessels flying a large red flag at the highest masthead.


SYMBOLS AND ABBREVIATIONS
For complete list of Symbols and Abbreviations, see Chart No. 1.


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/.


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