RedactedNarrative: On June 13, 2020 at or about 17:45, (Vessel 1) had passed a pontoon boat (Vessel 2) on his port side near the mouth of Cypress Bay on Kentucky Lake in Henry County, TN. Vessel 2 was being operated by Operator 2. The engine on Vessel 1 shut off unexpectedly, causing it to come to a sudden stop. Operator 2 (operator of Vessel 2), attempted to stop by putting his engine in reverse, but the starboard side of the bow of Vessel 2 impacted Vessel 1 on the port side of the stern.  Damage to Vessel 1 is estimated at $7700.00. Damage to Vessel 2 is estimated at $10,818.24.