 HISTORY
  LNM48/94--MARTHAS VINEYARD TO BLOCK ISLAND; ADD SYMBOL FOR DANGEROUS WRECK (PA)  (NOV 1994) IN LAT. 41-26-17.0N, LONG. 70-49-43.0.
  LNM51/94--MARTHAS VINEYARD TO BLOCK ISLAND; RELOCATE SYMBOL FOR DANGEROUS SUBMERGED WRECK FROM LAT. 41-26-17