RedactedNarrative: Operator and passengers were duck hunting on an extremely cold day. According to the surviving victim they were cruising, taken wind driven spray into the boat and at some point they took green water waves over the bow of the boat several times. The vessel started taking on more water over the bow and the engine stalled. Now taking water over the stern and the vessel swamped about twelve feet off the gas dock. The two deceased stepped off the boat and tried to swim to the gas dock. Surviving victim stayed with the vessel as it capsized. He grabbed a floating seat for flotation and pushed away from the boat and tried to let the current float him to a sand bar on an Island. He was able to stand in the water at some point but fell two times. He crawled onto shore and over rocks to the north east side of the island where he remained at a location which offered some shelter from the wind. He eventually heard a helicopter flying in the area and he moved out of some brush on the shore where he could be more easily spotted by searchers. He was rescued. The deceased men were recovered. Cause of accident was environmental conditions iie wind and wave action. Winds were gusting at 40 miles per hour at the time of the accident, the tide was incoming and the vessel was traveling into the incoming tide and wide. The victims were aggravated by cold water and air temperatures as well as lack of flotation devices. Each victim was heavily dressed against the cold and wore chest waders. Once in the water the saturated clothing and water filled the waders added extra weight further hindering the victim's ability to swim to shore. The current in the water where the men left the vessel would have hindered their ability to make for shore at the closest point.