  FE377SS/92--OPR-B660-RU; AN UNKNOWN OBSTRUCTION WAS FOUND ON SONARGRAMS IN POS. LAT.41-17-15.50N, LONG.72-04-59W (NAD 83) WITH AN ESTIMATED DEPTH OF 13.2M (43FT) IN SURROUNDING DEPTHS OF 48-49FT. EVALUATOR RECOMMENDS ADDITIONAL WORK TO RESOLVE THIS CON