NOAA ENCŪ

NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION

US5HA06M - HAWAIIAN ISLANDS - NIHOA, HI


INDEX:

NOTE A
SYMBOLS AND ABBREVIATIONS
AUTHORITIES
AIDS TO NAVIGATION
WARNING - PRUDENT MARINER
POLLUTION REPORTS
HORIZONTAL DATUM
SUPPLEMENTAL INFORMATION
CAUTION - USE OF RADIO SIGNALS (LIMITATIONS)
CAUTION - QUALITY OF BATHYMETRIC DATA
CAUTION - TEMPORARY CHANGES
RADAR REFLECTORS
CABLES AND PIPELINES
ADMINISTRATION AREA
ADDITIONAL INFORMATION
WATER LEVELS, CURRENTS, AND TIDES
COMMENTS REQUESTED


NOTES:

NOTE A
Navigation regulations are published in Chapter 2, U.S. Coast Pilot 10.  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, 14th Coast Guard District in Honolulu, Hawaii or at the Office of the District Engineer, Corps of Engineers in Honolulu, Hawaii.
Refer to Code of Federal Regulations section numbers.


SYMBOLS AND ABBREVIATIONS
For Symbols and Abbreviations see Chart no. 1.


AUTHORITIES
Hydrography and topography by the National Ocean Service, Coast Survey, with additional data from the U.S. Coast Guard and National Geospatial-Intelligence Agency.


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


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), or to the nearest U.S. Coast Guard facility if telephone communication is impossible (33 CFR 153).


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.


SUPPLEMENTAL INFORMATION
Consult U.S. Coast Pilot 10 for important supplemental information.


CAUTION - USE OF RADIO SIGNALS (LIMITATIONS)
Limitations on the use of certain other 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.


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


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


CABLES AND PIPELINES
Additional uncharted submarine pipelines and submarine cables may exist within the area. 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 exists, and when anchoring, dragging, or trawling. Covered wells may be marked by lighted or unlighted buoys.


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 maritime zone which the United States exercise sovereignty extending to the airspace as well as to its bed and subsoil. For more information, please refer to the Coast Pilot.


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


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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