RedactedNarrative: VESSEL #1 WAS MOORED IN SLIP C-11.  VESSEL #2 WAS MANEUVERING AWAY FROM DOCK.  VESSEL #2 WENT FROM REVERSE TO FORWARD WITH TOO MUCH POWER STRIKING VESSEL #1 ON STARBOARD MOTOR AND BREAKING SWIM PLATFORM DOOR.  VESSEL #1 DAMAGE TO ENGINE COVER; UNKNOWN IF ANY OTHER ENGINE DAMAGE.  RUB RAIL MARKS AND DAMAGE TO SWIM PLATFORM DOOR.  VESSEL #2 ADMITTED HIS INEXPERIENCE AND HE CAUSED DAMAGE.