Includes hydrographic survey information, NOS hydrographic survey index, and index to adjoining sheets.
"NOS NR 6-3 (OCS)."
Mode of access: Internet from the NGDC NOAA web site. Address as of 3/14/08: http://www.ngdc.noaa.gov/mgg/bathymetry/maps/finals/NR%5F6-3/NR%5F6-3.pdf; current access via PURL.