UNIT 1 WAS BACKING INTO THE SLIP B WHEN THE CURRENT TOOK THE STARBOARD BOW OF UNIT 1, INTO THE PORT BOW OF UNIT 2. OPERATOR OF UNIT 1 WAS TRYING TO KEEP THE BOW OF HER VESSEL (UNIT 1) INTO THE INCOMING CURRENT. THE CURRENT TURNED HER STARBOARD BOW INTO UNIT 2 PORTS BOW CAUSING DAMAGE TO UNIT 2 PORT BOW. UNIT 1 DID NOT HAVE DAMAGE AND NO ONE WAS ON BOARD OF UNIT 2