CPO and I met up with Springfield Lake Patrol to take a look at the boat involved in the accident. I could not locate any fresh damage on the boat that indicated that it was involved in a collision with another boat or with an object in the water. The boat had extensive damage to it from bouncing up against the rip¬rap. The boat was a small narrow boat with a raised seat that was off set to the starboard side. There was no manufacture flotation located in the structure of the boat. The boat had been assigned a hull number by our department. 
The capacity plate that was located on the boat appeared to be from another vessel and did not belong on the boat involved in the accident.
On 04/04/11 at approximately 8:00 P.M., I CPO was notified of a fatal boat accident that occurred on Lake Springfield involving two victims. I was to report to Lake Springfield on the morning of04/05/11 to assist with sonar and to take over the boat accident investigation. 
On 04/05/11 at approximately 7:00 A.M., I CPO arrived at Lake Springfield and met with Capt who briefed me on the accident. Capt. advised me that the two male subjects, were involved in a fishing tournament the day of the accident. The water temperature was approximately 50 degrees; the wind was blowing around 40 to 50 MPH and producing 3 to 4 foot waves. The male subjects were in a narrow 14 ft. Jon boat with a 20 HP motor on it. 
They located one male subject on 04/04/11 and identified him. He was located by the use of sonar and recovered by dive personnel. 
The other subject was located on 04/05/11 by sonar and retrieved by divers. He was located approximately 100 yards farther north from victim1 and approximately 200 yards from the north shore line where the boat was located bouncing against the rip-rap. 
It was determined that due to the high winds, the high waves, and the boat being extremely narrow that the weather conditions would have been a reason for the boat to capsize. The temperatures of the water were cold enough that a person could die of hypothermia in a short period oftime.
Springfield                   