RedactedNarrative: V1 WAS OPERATING THROUGH RIVER CHANNEL AND STRUCK V2 WITH BOW.  V2 HAD BEEN IN THAT LOCATION FOR APPROX. 1 WEEK DUE TO DREDGING OPERATION.  OPERATOR OF V1 STATED THAT V2 WAS NOT LIT UP AND HAD NO IDEA V2 WAS AT THAT LOCATION UNTIL IT WAS STRUCK.  ALCOHOL WAS NOT A FACTOR.