  LNM 49/87--12/2/87;  HAZARD TO NAVIGATION- VESSEL SUNK.  63 FOOT HOUSE BOAT HAS SUNK IN APPROXIMATE POSITION 38°02.7'N 122°16.5"W (NAD27).  THE DEPTH OF WATER OVER THE WRECK IS UNKNOWN.  MARINERS SHOULD USE CAUTION WHEN TRANSITING THIS AREA.