RedactedNarrative: Operator of V1 stated that he was traveling approximately 80-100 feet behind V2 going north up the Mississippi River at approximately 25 – 30 mph, when vessel #2, must have come to a stop or slowed down. V1 was watching a paddlewheel boat and did not see vessel #2 slow down or stop. V1 hit the back of V2 causing it to ramp up and over vessel #2 causing major damage to vessel #2 and striking both victims causing injuries. No alcohol was involved. V1 was issued a citation for "careless operation."