  CL414/42-- THE CO OF U.S. NAVY PATROL VESSEL "BLACK DOUGLAS"  REPORTED A ROCK WITH 35 TO 45 FT OF WATER. POSITION OBTAINED BY BEARINGS.  A FATHOMETER WAS USED.  POS. RECORDED BY CARTOGRAPHER ON A HAND NOTE STATES 48-07-56N, 124-47-10 ("10" IS BEST GUES