  FE387SS/94-- OPR-E696-HE; SIDE SCAN SONAR CONTACT. COMPUTED HEIGHT OF 1.3 METERS IN 12.7 METERS. DIVERS DESCRIBE A SMALL BARGE OR PONTOON FLOAT LYING UPSIDE DOWN ON BOTTOM WITH A HEIGHT OF 5 FEET OFF BOTTOM. DIVERS PNEUMO. LD OF 12.9 METERS (42 FEET).