RedactedNarrative: UNIT ONE WAS TRAVELING NORTHBOUND THROUGH THE BRIDGEWATER CHANNEL NEAR SIGN 12 WHEN IT MADE AN ABRUPT TURN CAUSING THE LEFT SIDE OF THE STERN OF VESSEL ONE TO COLLIDE WITH VESSEL TWO ON THE PORT SIDE.  A SERIES OF SCRATCHES APPROXIMATELY FIVE TO SIX INCHES IN LENGTH EACH WERE OBSERVED INTO THE FIBERGLASS OF UNIT TWO.  THE STERN OF VESSEL ONE HAD WHITE PAINT TRANSFER ON THE TRIM OF THE VESSEL NEAR THE STERN.