U.S. National Oceanic and Atmospheric Administration, National Ocean Service.2010-02-152010-02-151988http://hdl.handle.net/1969.3/220191 map, 90 x 135 cm.This map includes depths measured in fathoms and is designed for offshore navigation only.mapsnavigational chartssoundingsU.S. Gulf Coast. Mississippi River to Galveston.Map