Operator was in a a 23 foot Crownline inboard/outboard boat, bearing registration LA 5909 FR, on Caddo Lake in Karnack, Tx. He hit a submerged object, resulting in the lower unit being torn off the boat. Also, as a result of hitting the submerged object, the engine was completely submerged with water, as was the entire interior of the boat.
Karnack