RedactedNarrative: Operator and Passenger were enjoying a day on the lake. The pontoon boat was drifting across the lake when the Passenger dove off the boat in roughly 10 feet of water. The Operator felt immediately that something was wrong. She saw that the Passenger was struggling and beginning to panic. At one point, he was hanging on to the side of the pontoon but could not continue to hang on. The Operator could not maneuver the boat close enough to the man in the water due to the wind and the choppy water conditions. The Operator told him to float and threw him multiple Type III lifejackets because there was no Type IV throwable device on board the boat. Another watercraft on the lake heard the calls for help and got the victim in their boat and brought him to the public access. First responders rendered aid but he was pronounced dead at the scene. Life jackets were not being worn, and alcohol was not a factor.