RedactedNarrative: On 8/2/2014 at approximately 1640 hours, on the Tugaloo river arm of Lake Hartwell in Oconee County, SC an 18'5 shivered (Unit 1) was being towed by a 24"00 pontoon (Unit 2) when unit 1 began to take on water and sink. Both vessels were owned by the same person. Per owner of the vessels, the "plug" was properly installed and he felt like the old vessel had a cracked transom. Inspection of the drain plug was not possible due to the fact that the vessel was on the bottom in about 8-10 feet of water.