RedactedNarrative: V1 operator stated he hit something about 40 miles south of the lock and had a slight vibration in one motor. V1 was locking through at Coffeeville Lock and Dam. The operator of V1 went to throw a line to tie up inside the dam but missed the cleat. The v1 operator then noticed the boat was sinking and jumped off swimming to lock wall ladder. I Trooper saw after the vessel was raised and placed on cribbing that the starboard propeller had a bent blade and the brackets hond the shaft broke lose. That caused the packing on the shaft to wear out, which caused the vessel to take on water.