 HISTORY
  BP97660/76--1976 NOAA SHIP DAVIDSON,  UNVERIFIED SURVEY;  MARIPOSA ROCK INVESTIGATED AND DEVELOPED OUT TO THE 10 FM CURVE. LEAST DEPTH ON THE ROCK WAS 19.6 FT (3 1/4 FM)  IN POS.56 10 37.40N, LONG. 132 44 14.00W (NAD 27). DEPTH WAS OBTAINED B