Unit 1's operator changed direction and tried to increase throttle.  As the vessel began to turn, water came over the transom and it began to quickly sink.  Both occupants were then in the lake as the vessel sank.  It was equipped with PFDs, however they were in the hatch and they could not get to them before the vessel sank.  Both occupants held on to a cooler and type 4 throwable until they were rescued and taken to the landing at Black's Fish Camp in Cross.  No injuries reported.
Lake Moultrie