  H10224/86-88--OPR-C121-WH-86-88; DEVELOPMENT 110; A CONTACT ENCOUNTERED ì
IN 1986, WAS DEVELOPED WITH ECHOSOUNDER AND SIDE SCAN SONAR IN 1986-1987; ì
DIVERS DETERMINED THAT OBSTRUCTION IS THE RESULT OF CONSTRUCTION DEBRIS ì
DUMPING; CONSISTED ENTIRE