RedactedNarrative: OPERATOR ADVISED HE TOOK V1 OUT AFTER HIS PARENTS WENT TO BED AND DRANK A FEW BEERS.  OPERATOR'S BAC AT THE TIME OF THE INTERVIEW WAS .187. HE FURTHER ADVISED WHEN THEY RETURNED TO SHORE HE PARKED IN THE WRONG SPOT AND KNEW HE HAD TO MOVE SO HE BACKED UP AND WHEN HE WENT FORWARD V1 STRUCK V2 PARKED BESIDE HIM.  OPERATOR ATTEMPTED TO BACK UP AGAIN AND WHEN HE STARTED FORWARD HE STRUCK V2 AGAIN.  THE THIRD ATTEMPT WAS FINALLY SUCCESSFUL.