RedactedNarrative: OPERATOR 1 WAS DRIFTING  AS PASSENGERS WERE SWIMMING ON BOARD VESSEL 1. ONE OF THE PASSENGERS ON VESSEL 1 WAS GOING DOWN THE SLIDE AND TURNED AND FELL ON BOARD VESSEL 1 STRIKING THEIR HEAD ON THE DECK OF VESSEL 1. THE IMPACT WITH VESSEL 1 CAUSED THE PASSENGER TO SUSTAIN INJURIES. THERE WAS NO INJURIES ON BOARD VESSEL 1 AND THERE WAS NO DAMAGE TO VESSEL 1.