RedactedNarrative: UNIT 1 WAS BEACHED ON CAPERS ISLAND FOR AN ECO TOUR.  UNIT 2 WAS MOORED DIRECTLY OFF UNIT 1'S STARBOARD BEAM.  UNIT 2 WAS LIFTING ANCHOR WHEN AN ELECTRICAL ISSUE OCCURRED.  WHILE ADDRESSING THE ISSUE, UNIT 2 BEGAN DRIFTING TOWARDS UNIT 1.  DUE TO A MECHANICAL ISSUE, UNIT 2 WAS UNABLE TO AVOID A COLLISION WITH UNIT 1.