RedactedNarrative: Operator was standing on the front deck while the victim was sitting in the pedestal seat on the back deck. They had been crappie fishing since 0700 and around 1025 the operator looked back and observed the victim sitting upright with his eyes closed.  A few moments later he heard a loud splash and turned around to see the victim in the water.  Operator tossed him a life jacket and the victim reached for it but missed and went under and never resurfaced. Operator was unable to enter the water as he is unable to swim. The victim had a prosthetic leg due to diabetes.  Operator advised blood sugar levels were always a concern but it was not unusual for the victim to fall asleep while they were fishing.  Victim was recovered at 1500hrs by AGFC Dive Team.  Victim's blood sugar level was tested and found to be 196.