RedactedNarrative: VESSEL 1, A 1997 SEA RAY, OPERATED BY OPERATOR#1, WAS TRAVELING AT APPROXIMATELY 30 MILES PER HOUR NORTHBOUND ON THE COLORADO RIVER, APPROACHING THE SOUTH MOUTH OF THE NO WAKE ZONE OF THE TOPOCK GORGE.  VESSEL 2, A 2009 NORTH AMERICAN SLEEK, OPERATED BY OPERATOR#2, WAS ALSO TRAVELING NORTHBOUND ON THE COLORADO RIVER APPROACHING THE NO WAKE ZONE OF THE TOPOCK GORGE AT APPROXIMATELY 30 MILES PER HOUR.  VESSEL 2 WAS IN FRONT, WITH VESSEL ONE DIRECTLY BEHIND AND IT'S WAKE.  VESSEL 2 BEGAN TO SLOW DOWN AS IT WAS APPROACHING THE NO WAKE ZONE, BUT VESSEL 1 FAILED TO SLOW.  VESSEL 1 FINALLY REALIZED THAT VESSEL 2 HAD SLOWED, SO THE OPERATOR TRIED TO TAKE EVASIVE ACTION BY TURNING TO ITS STARBOARD.  VESSEL 1'S PORT SIDE STRUCK VESSEL 2'S STARBOARD SIDE CAUSING CRACKING TO THE FIBERGLASS AND DAMAGE TO THE METAL BIMINI FRAME OF VESSEL 2.  THIS INCIDENT WAS OBSERVED BY MYSELF AND ANOTHER SWORN DEPUTY SHERIFF.  THE OPERATOR OF VESSEL 1 WAS ISSUED A CITATION FOR FAILING TO CONTROL SPEED TO AVOID A COLLISION.