RedactedNarrative: Operator of vessel 1 stated they were westbound on Chautauqua Lake heading into harbor at snug harbor. Vessel 2 was heading northbound on Chautauqua Lake with no navigation lights. Vessel 2 did not yield right of way to vessel 1, and due to this action struck vessel 1. Vessel 2 upon impact had a passenger thrown overboard but did not get pulled back into vessel. Vessel 2 then left scene of accident heading northbound. Witness also confirmed the description of this incident. No injuries noted.