RedactedNarrative: According to the operator's statement, at approximately 1:00am the operator, was traveling on step through an area with bulkheads across the bayou. Operator then slowed his vessel to clutch ahead before reaching the bulkhead area. He then thought he was clear of the area and began to accelerate. He then struck a submerged object with the motor of his vessel. This caused severe damage to the motor and stern of his vessel which caused the vessel to begin taking on water. Operator tried to bail water out by hand but later resulted in the vessel sinking on scene. He was then evacuated through US Coast Guard and brought to Plaquemines Medical Center where he was then released. PFD was worn. Impairment was not suspected.