RedactedNarrative: On December 3, 2020 at approximately 4:45PM, a 1996 42’ Hunter fiberglass sailboat (LA-5767-FR) Owned and operated by Occupant 1 (W/M 75) , collided with and caused damage to a section of the dock of T-Rivers Bar & Grill.  Operator 1 was the only P.O.B. the 42’ Hunter at the time of the incident.  Prior to the incident, Operator 1 departed Marina Del Ray slip #A25 and headed down river under motor power at approximately 5 Kn.  He heard a disturbing noise originating from the vessel’s engine room.  Operator 1 put the 42’ hunter on auto pilot, left the operating position behind the steering wheel and went below deck to investigate for a time that he described as approximately 2 minutes.  When he came back to the wheel he found that he was approximately 20 feet from the dock and could not stop from hitting it.  Neither drugs nor alcohol suspected, P.F.D’s on board but not in use.  Contributing factor: No proper lookout.