RedactedNarrative: Vessel 1's operator advised that he was pulling away from the dock when his knee hit the throttle propelling the vessel forward which collided into the stern of the vessel 2. Vessel 2 which was docked and had no occupants was forced into a dock ladder and the bow made contact with the engine of docked vessel 3. Vessel 3 had an occupant onboard who was not injured. Vessel 1 had damage on both the port and starboard sides toward the bow. Vessel 2 had damage to the engine cowling and the bow. Vessel 3 had damage to the engine cowling and the dock ladder was damaged during the collision.