 HISTORY
  H-10598/95--OPR-J343-MI;  SIDE SCAN SONAR AND DIVER INVESTIGATION REVEALED A 5 X 5 FT CONCRETE BLOCK, 3 FT OFF THE BOTTOM. LEAST DEPTH WAS 26 FT.
  H12018-- OPR-J417-NRT1-11; Contact detected in 200% SSS coverage and investigated using MBES