HISTORY
 LNM24/90 (06/11/90) -- "S/V DISCOVERY" SUNK IN APPROX. POS. LAT 33-42-23.0N, LONG 118-15-04.0W, AT THE ENTRANCE TO LOS ANGELES.
 CL1881/98 (10/08/98) -- USACE, LA DISTRICT, CONDUCTED A MULTIBEAM SURVEY WITH 100% COVERAGE IN A RECTANGULAR AREA