RedactedNarrative: Subject was dispatched to Deep Hole, Matunuck for a report of an overturned boat with two subjects in the water.  When he arrived the USCG advised that two people were at their station.  EPO reported to the USCG station and obtained witness statements from both victims. No injuries were reported. The operator reported that he was hauling lobster pots under his recreational lobster license in his 17-ft. Wellcraft, at East Matunuck State Beach., bow facing west.  Seas were 2-4’ and winds were gusting 10-17 mph.  He reported that a wave came over his port stern quarter.  He attempted to throttle down to empty but lost balance of the boat.  A second wave came over the freeboard stalling out the engine.  That’s when the boat rolled slowly starboard first until it was upside-down.  The boat made its way to shore where it lay upside down.  When EPO checked his registration, he found the boat was not registered.  Operator  arranged to have his boat towed from the scene.