RedactedNarrative: On September 2nd, 2018 at approximately 7:45 p.m., the operator of Vessel #1 and three occupants were travelling from the German Creek Area towards the Olen Marshall Access Area on Cherokee Lake in Grainger County. Between Point 17 and 18, on the backside of TVA Circle Park Access, Vessel #1 was travelling at approximately 25 mph and struck a submerged object believed to be a rock. As a result of the collision, Vessel #1 suffered damage to the lower unit. The engine cowling was also separated from the engine and sank before it could be recovered. No injuries were reported.