 HISTORY
  LNM37/79--SUBMERGED OBJECT REPORTED APPROX. 50 YARDS WEST OF SHREWSBURY 
RIVER LT. BELL BUOY 2; POSITION OBTAINED FROM CHART HISTORY.
  H10049/82--OPR-B139-WH-82; ONE BOAT OTTER-BOARD CHAIN SWEEP WAS RUN AT 10M
LINE SPACING FOR A 50M RADIU