  H10991/00-- OPR-A397-WH; 200% SIDE SCAN SONAR OPS LOCATED UNCHARTED OBSTRUCTION. SWMB LD OF 61 FEET (18.59 METERS) IN LAT. 42-20-30.35N, LONG. 70-55-52.89W. EVALUATOR RECOMMENDS CHARTING A NON-DANGEROUS OBSTRUCTION (61 OBSTN) AS SURVEYED. (ENT 1/9/03,