RedactedNarrative: V1 was docked in its slip when the operator cranked the motor and a machinery failure (shift system) caused the vessel to accelerate forward. V1 collided with V2, V3, and the dock of Marker 21 Marina in Ft. Walton Beach, FL. V2 and V3 were docked and unoccupied at the time of the accident.
  
  Operator had recently purchased the vessel and they wanted to crank the motors to see if they worked properly. They stated that subject1 was in the engine room, Operator was at the controls, and subject2 was on the fly bridge. They stated that the vessel was docked in its slip immediately east of the damaged dock. They stated that when the motors were turned on the vessel was stuck in "wide open" and accelerated forward breaking the mooring lines and then collided with V2, V3, and the dock of Marker 21 Marina.
  
  V1 had damage to the bow section of the vessel on the keel, port hull, and starboard hull. V2 had damage to the bow section of the keel, pulpit, and railing, the port side and starboard side, and V3 had damage to the starboard bow and railing. The dock had damage to several sections of concrete and broken pilings.