RedactedNarrative: V1, a blue 2015 Yamaha recreational rented PWC, and V2, a yellow 2015 Yamaha recreational rented PWC, were on a guided tour around Key West. The livery company was Barefoot Billy's. Both V1 and V2 were occupied by two subjects, an operator and passenger. V1 was the 5th vessel in line and V2 was the fourth vessel in line. The tour entered Cow Key Channel and began to slow down for the slow speed zone and go under the Cow Key Channel Bridge. As the group was slowing down, V1 confused the throttle for a break. Therefore, the PWC accelerated and struck V2. Both the operator and passenger of V2 were injured. The occupants of V1 were uninjured. They were taken to shore and transported to Lower Keys Medical Center. operator of V2 received a broken wrist and contusions. occupant v2 received broken ribs and concussion/head trauma, contusions.