It appears while sailing, Operator 1entered the water and at some point and separated from his sailing vessel.  It is unknown exactly how Operator 1entered the water.  It would be a probable assumption that a person could easily be thrown from a small 130 lb sailboat into the water after encountering high winds and three to five foot waves. 

The conclusion to Officer 1's investigation and pathologist findings indicate Operator 1 succumbed to hypothermia over a short period of time, leading to Operator 1death.  With the recorded data on the Lake Michigan water temperature, Operator 1could not have withstood the 60 to 70 degree water temperatures for an extended period, limiting Operator 1survival time.  The investigation is completed at this time.
Gary                          