RedactedNarrative: V2 WAS TRAVELING NORTHBOUND ON ICW JUST NORTH OF DAY BEACON 37.  VESSEL 1 WAS TRAVELING NORTH BOUND BEHIND VESSEL #2.  BOTH VESSELS WER CHANGING SPEEDS DUE TO HEAVEY VESSEL TRAFFIC AND WAKES.  VESSEL #1 STRUCK THE STERN PORT ENGINE OF VESSEL #2 WITH HIS STARBOARD SIDE BOW.