RedactedNarrative: On 9-3-2017 at approximately 7:15pm vessel operator was fishing near Lock 15 on the Black Warrior River in Tuscaloosa County. Operator was traveling east at idle speed southeast of the old lock wall when he struck a boulder that was beneath the water's surface. The operator stated that he never saw the submerged rock. The collision damaged the hull of the boat. There were no injuries and both the operator and passenger were wearing personal flotation devices as required by Alabama law.