Includes hydrographic survey information, NOS hydrographic survey index, and index to adjoining sheets.
"NOS NO 7-3 (OCS)."
Mode of access: Internet from the NGDC NOAA web site. Address as of 3/7/08: http://www.ngdc.noaa.gov/mgg/bathymetry/maps/finals/NO%5F7-3/NO%5F7-3.pdf; current access via PURL.