RedactedNarrative: Vessel #1 was traveling southbound on Lake Keystone at night.  Vessel #1 operator was attempting to enter Pier 51 Marina to dock his vessel.  
  
  Vessel #1 operator was under the influence of alcohol and failed to negotiate the water wave break wall.  Vessel #1 operator struck the water wave break wall.  
  
  A.O.I. was 350 feet west of the Pier 51 Boat Ramp and 1400 feet north of the Pier 51 Marina.  There was no moon at the time of the collision and visibility was good (for dark).  Pier 51 Marina had its light on, lighting up the marina.  
  
  The water wave break wall had its blinking light at the west end of the wall.     (All measurements are approximate)