Vessel 1 was stopped on Lake Erie west of West Sister Island, returning from Put-In-Bay, when the Operator of Vessel 1 stopped to allow the Occupants to swim.  Four of the Occupants entered the water to swim; two Occupants remained on board Vessel 1.  Due to difficulties in starting Vessel 1 when leaving Put-In-Bay, the Operator of Vessel 1 chose to leave the engines running during this activity.  One of the Occupants in the water re-boarded Vessel 1, and after doing so, slipped and while trying to regain his balance accidently struck the throttle putting Vessel 1 into reverse gear.  One of the Occupants in the water was located behind the starboard motor at this time and was sucked into the propeller resulting in injuries.  Another Occupant aboard Vessel 1 was able to put Vessel 1 quickly back into neutral.  The injured Occupant was taken back aboard Vessel 1 and transported back to shore where emergency services met the party and transported the Victim for treatment.  The Occupant that knocked the boat into gear was a .223 BAC and the operator that operated the vessel after the incident was a .102 BAC.
Oregon                        