RedactedNarrative: Vessel One (LA-8138-BB) was traveling downstream at night on Blood River with operator and six additional passengers and while plowing struck a vessel traveling downstream as well.  Vessel Two (LA-7662-FT) with operator and six additional passengers was struck on the starboard engine cowling and starboard/stern corner of the vessel. Operator1 showed signs of impairment and after SFST’s were conducted and a breath analysis of .171g% was provided, it was concluded that operator1’s impairment, along with improper lookout, were the primary factors causing the accident. No PFD’s were worn. Both vessels were equipped with remote steering. No injuries were reported.