RedactedNarrative: UNIT 1 WAS ATTEMPTING TO LOAD ONTO THE JET DOCK AT HIS RESIDENCE.  THE OPERATOR STATED IT WAS THE FIRST TIME ATTEMPTING TO LOAD THE VESSEL ONTO THE DOCK.  WHILE ATTEMPTING TO DOCK, THE OPERATOR USED EXCESSIVE THROTTLE WHILE STEERING TO THE PORT SIDE.  THE THROTTLE AND DIRECTION CAUSED THE VESSEL TO FALL OF THE PORT SIDE, CAUSING THE VESSEL TO CAPSIZE.