RedactedNarrative: VESSEL 1 ENTERED BELLE MAER MARINA NEAR ROW "N" TO DOCK HIS BOAT.  VESSEL 1 OPERATOR STATED ANOTHER VESSEL WAS PASSING HIM AND TURNED IN FRONT OF HIM.  VESSEL 1 OPERATOR EXPLAINED HE HAD TO PUT HIS VESSEL IN REVERSE TO AVOID A COLLISION WITH THE OTHER VESSEL.  WHILE DOING SO, VESSEL 1 STRUCK A DOCK CAUSING DAMAGE TO HIS VESSEL'S PORT SIDE STERN, CRACKING THE GELCOAT.  THERE WAS NO DAMAGE TO THE DOCK.  WITNESS 1 WAS ENTERING THE MARINA AND ATTEMPTED TO OVERTAKE VESSEL 1 DUE TO WEATHER AND SPEED OF VESSEL.  WITNESS 1 STATED HE SAW AND HEARD VESSEL 1 STRIKE THE DOCK WITH NO INJURIES OR DAMAGE.