  LNM 46/82 & 47/82 - 1st CG; Added subm obstn (3ft), 41° 22' 07"N, -71° 28' 38"W, steel frame structure in 17 feet of water extending to 3 feet below the surface is marked by a 2 1/2 foot diameter yellow ball. (Entered 5/6/09 KAK)