  NM18/55--4/30/55; EST MID GROUND S END OBSTR LT; LT REP DESTROYED IN NM37/55; 
LT REP DISCONT IN NM4/56; POS SURVEYED BY NAVY IN 1955; CHARTED AS SUBM PILE 
  H9901/80--OPR-D103-PE-80; ITEM #78; 1:10,000 SCALE SURVEY; ARGO (R/R) CONTROL 
ECHO SOUNDE