Layer Name:     3 Nautical Mile Boundary

Shapefile Name: 3 Nautical Mile Boundary	

Layer Type:     Polygon

Status:         Complete

Geog. Extent:   Islands of Kaula, Niihau, Kauai, Oahu, Molokai, Lanai, Maui,
                Kahoolawe and Hawaii

Projection:     Universal Trans Mercator, Zone 4 (Meters)

Datum:          NAD 83

Description:    This dataset contains the 3 Nautical Mile Boundaries located
                within the vicinity of the main Hawaiian Islands.
		
Source:         USGS Digital Line Graphs, 1983 version, and derived boundaries. 		

History:  	This file was created by merging the coast_n83 polygon file with 
		the islets_n83 polygon file from the State of Hawaii, Office of
		Planning using the union tool in ESRI's ArcGIS 9.1.  A three 
		nautical mile buffer was applied using the buffer tool in ArcGIS 
		9.1 then buffered polygons were merged.  The coast_n83 and 
		islets_n83 polygons were clipped using the erase tool in ArcInfo 
		9.1.  Individual polygon areas were calculated using the 
		calculate areas tool within ArvGIS 9.1.  Projection is UTM Zone 4, 
		and datum is NAD 83.  File was completed in December, 2006.


		
Attributes: Polygons:
		
            	F_AREA           Area of polygon in meters     
            	ID               Polygon ID (for Arc/Info use) 
            	Island           Island Name
		


NOTE:		Data not to be used for navigational purposes. Data were not 
 		reviewed or authenticated by the Office of Coast Survey, 
  		NOAA National Ocean Service. NOAA is not responsible for the
  		use of these data as a navigational tool or area estimates.
		      
		
Contact:    	Robert O'Conner, NOAA Fisheries 
            	1601 Kapiolani #1110, Honolulu, Hi.  96814; (808) 944-2200.
            	email:  robert.oconner@noaa.gov