NOAA ENC

NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION

US4SP05M - COMMONWEALTH OF THE NORTHERN MARIANA ISLANDS; SAIPAN AND TINIAN


INDEX:

NOTE A
AUTHORITIES
AIDS TO NAVIGATION
NOTE B
WARNING - PRUDENT MARINER
POLLUTION REPORTS
SUPPLEMENTAL INFORMATION
CAUTION - TEMPORARY CHANGES
CAUTION - LIMITATIONS
CAUTION - SUBMARINE PIPELINES AND CABLES
RADAR REFLECTORS
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 charted regulations section numbers.


AUTHORITIES
Hydrography and topography by the National Ocean Service, 
Coast Survey, with additional data from the U.S. Coast Guard, U.S. Navy, and other sources.


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


NOTE B
Submerged submarine operations are conducted at various times in the 
waters contained on this chart. Proceed with caution. 


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).


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.


CAUTION - 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.


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.


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


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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