RedactedNarrative: A single vessel fatality incident occurred on 06/26/14 at approximately 3:30 pm in Lake Pontchartrain, in Orleans Parish. The operator left his storage slip in Vessel 1(LA-5423-AZ, 34' Hatteras) at the South Shore Harbor immediately east of the New Orleans Lake Front Airport at approximately 2:45 pm. Prior to some strong thunderstorms moving into the area. USCG received a transmission from the operator. Coast guard was able to locate the vessel which was approximately 90% or more submerged with only a portion of the starboard bow above the water. The operator was located by a diver in the cabin of the vessel. The only observable (given the submerged majority) damage to the vessel was broken windsheilds/cabin glass. There was no observable evidence on scene that alcohol was involved in this incident. The one person who spoke to the operator at the marina prior to the incident said there was no indication that the operator was intoxicated by alcohol. Vessel 1 appeared to have been taking on water quickly and submerged before the operator could escape the cabin. The primary contributing factor appears to be operator inattention. The secondary contributing factor appears to be force of wake/wave. The tertiary contributing factor was weather. 
  The operator failed to perceive the danger inherent to the violent weather present/building at the time of the incident. The operator also failed to perceive the potential danger of a considerable length of line hanging overboard that eventually became caught in the propeller/shaft. The waves created by this storm were strong enough to affect the stability of vessel 1 in the water. When the line became tangled in the propeller/shaft, the operator tried to reverse the engines to free the prop shaft. This maneuver likely allowed a large wave and or boat wake to crash over the transom of the vessel filling the hull with water initiating the submersion.