  NM11/84 (3/17/84) -- USN REPORTED A ROCK IN 57 FT DEPTHS IN LAT 33-40-27N, LONG 118-13-17W.  PRESENTLY CHARTED AS "57 FT RK REP (1983)" ON THE 36TH ED. OF CHART 18749.
  H10998/01 -- OPR-L325-KR-00;SEARCH RESULTED IN A SIGNIFICANT CONTACT RISING 13 FE