RedactedNarrative: PWC #1 (B) WAS OPERATING ON A DESIGNATED COURSE WHEN PWC #2, WHO WAS TRAVELLING DIRECTLY BEHIND, COULD NOT MANUEVER DUE TO OFF THROTTLE STEERING.  AS A RESULT, PWC #2 STRUCK PWC #1 FROM THE LEFT REAR CAUSING PWC #1 TO RAMP AND STRIKING OCCUPANTS AND THE TOP STEERING HEALM.