V1 WAS UNDERWAY ON A LIVERY GUIDED TOUR HEADING SOUTH TOWARD THE COW KEY CHANNEL BRIDGE.   V1 WAS OVERTAKING V2 (STARBOARD) ALSO HEADING SOUTH TOWARD THE COW KEY CHANNEL BRIDGE. V1 WAS ABOUT THE MIDSHIP OF V2 AND SUDDENLY TURNED TO PORT STRIKING V2 BOW TO STARBOARD SIDE OF V2.  PASSENGER ON V1 ADMITTED TO LOWER KEYS MEDICAL CENTER WHERE HE WAS TREATED AND RELEASED.  ; OCCUPANT DIAGNOSED WITH PARTIAL SEPARATION OF LEFT SHOULDER, CONTUSIONS, AND FACIAL ABRASIONS.  TREATED AND RELEASED.  Updated Bard: V1 was overtaking V2 and V1 turned into V2.  Operator and Occupant of V1 were ejected and Occupant  on V1 struck V2
KEY WEST                      