RedactedNarrative: Operator vessel 1 was attempting to dock vessel 1.  He left the vessel in gear as he went to put dock line to dock. As he reached to disengage throttle he fell on throttle handle giving it more throttle and speed, vessel 1 then struck vessel 2 which was moored to the dock at Eastport Chowder House. Vessel 1 went over stern section of vessel 2 which had no one aboard and came to rest on pier.  Operator1 was at fault for alcohol use and inattention