RedactedNarrative: VESSEL 2 WAS ANCHORED AND NOT MOVING WITH TWO OCCUPANTS ON BOARD.  VESSEL 1 KNEW THE OPERATOR OF VESSEL 2 AND WAS PULLING UP BESIDE HIM TO TIE OFF.  VESSEL 1 WAS APPROACHING AND A WAVE PUSHED HIM FORWARD TOWARDS VESSEL 2.  VESSEL 1 ATTEMPTED TO POWER UP AND GO FORWARD TO AVOID COLLISION.  VESSEL 1 WAS UNABLE TO AVOID CONTACT WITH VESSEL 2.  VESSEL 1 REAR STARBOARD SIDE CLEAT AND QUARTER PANEL STRUCK VESSEL 2 CAUSING DAMAGE TO VESSEL 2.