RedactedNarrative: BOTH VESSELS WERE SOUTHBOUND IN THE CHANNEL 200 FT EAST OF HORSES HEAD AND 350 FT NORTH OF MAIN BOAT RAMP WHEN VESSEL 1 SHARPLY CHANGED DIRECTIONS CAUSING THE OPERATOR AND PASSENGER TO BE EJECTED.  VESSEL 2 SWERVED TO THE RIGHT TO TRY TO AVOID VESSEL 1 PASSENGER BUT ENDED UP STRIKING HIM.