RedactedNarrative: there ARE COnFLITING STATEMENTS FROM THE OPERATORS OF THE TWO VESSELS.  AFTER LISTENING TO BOTH OPERATORS, IT IS MY BELIEF THAT V1's STATEMENT ABOUT THE USE OF PROPER NAVIGATION LIGHTS IS INACCURATE.  I BELIEVE THAT V1 operator DID NOT HAVE A STERN LIGHT WORKING AT THE TIME OF THE ACCIDENT WHICH CAUSED operator2 TO NOT SEE THE VESSEL JUST PRIOR TO IMPACT.