The U.S. Coast Guard rescues three crew members from a sinking New Bedford clam boat.  The incident happened Tuesday morning, about 8 miles south of Chatham.  According to seaman Adam Stanton, the crew of the clam boat "Full Circle" radioed the Coast Guard around 8am Tuesday, saying their vessel was sinking.  The Coast Guard dispatched a vessel from the Cape Cod Chatham Station, and rescued the crew.  Stanton says no injuries were reported, but the 40-foot clam boat sank.  A salvage company has been contacted.