RedactedNarrative: Operator drove the pontoon boat out onto the lake. The boat was stopped and the engine was off but it was not anchored. The victim jumped off the boat to go swimming. Occupant then joined him. The two swam for a short period of time when the group decided to leave. Occupant got into the boat and noticed that the victim was not following him and was not visible. The group looked under the boat but the victim was not there. Occupant then drove the boat looking for the victim. 911 was then called and the group went to a nearby pier. Victim was found at about 12:38pm in 42 feet of water.  Victim's BAC was 0.277.