RedactedNarrative: On october 28, 2014 at approximately 1550 hrs i responded to marina one located at 580 n. Federal hwy. Deerfield beach, fl in reference to a vessel accident. Upon arrival i met with marina one employee who advised that he had docked a customer's vessel (v2), gradywhite (fl9236pg), on the west end of the fuel dock to fuel it. Marina employee stated that after fueling (v2) he left it secured to the west end of the dock in preparation for placing it back into a slip. While vessel (v2) was docked, rental boat customer was returining his rental boat (v1), 22'6 chaparral (fl7120pc). Operator1 further stated that as Operator1 approached the east end of the fuel dock he appeared to be panicked realizing he was approaching the dock too quickly. Operator1 pushed the throttles of (v1) forward causing (v1) to increase speed. The bow of (v1) struck the engines and transom of (v2) resulting in the bow of (v1) striking and riding up on top of the cowlings of (v2) before settling back into the water. I observed damage to the cowlings and the transom engine bolt of (v2). (v1) received no damage. I spoke with the dock assistant who witnessed and collaborated Operator1's account of the incident. No injuries were received to any parties involved. A case was issued to marina one and Operator1.