RedactedNarrative: V2 WAS GOING DOWNSTREAM AND V1 WAS GOING UPSTREAM. BOTH V1 AND V2 WERE OPERATING ON THE FAR WEST OF THE RIVER. V1 WAS DIRECTLY IN FRONT OF V2'S LOCATION. V2 COULD NOT VEER ANY FURTHER RIGHT WITHOUT STRIKING THE BANK OF THE RIVER, HE PUT THE THROTTLE IN REVERSE TO AVOID STRIKING V1. V1 THEN VEERED TO IT'S RIGHT TO AVOID COLLISION BUT THE PORT SIDE OF V1 STRUCK THE BOW OF V2. THIS ACTION CAUSED THE DAMAGE TO BOTH VESSELS. AFTER V1 STRUCK V2, V1 LEFT THE SCENE.  Operator1 had been drinking.