RedactedNarrative: V1 was anchored about 1/2 a mile off shore just north of the Ft. Pierce Inlet. The occupants were swimming in the ocean. As people were getting on the rear of the vessel, the back of the vessel became over loaded and a wave came over the stern. The vessel then started to take water over the stern and filled up with water. The people on the vessel then went into the water and were resuced by the US Coast Guard. The vessel drifted into the beach at Ft. Pierce Inlet State Park.