RedactedNarrative: Vessel #1 is a rental PWC that was being operated by subject Operator1 with no passengers on board. Operator1 related that he was completing a counter clockwise turn in the lagoon area at approx. 20MPH and failed to observe vessel #2 until the last moment when he came off the power and tried to steer the opposite way to avoid impact but was unable. He further related that he has no prior experience on a jet ski, but successfully passed the exam to operate the ski today. Operator1 sustained no injuries and was wearing his PFD at the time of this crash. 
   
  Vessel #2 is a rental PWC that was being operated by subject Operator2 and had passenger riding on the back. Operator2 related that he had just taken over the controls of the ski from his brother (passenger) and was beginning to operate it for the first time. He had just begun to accelerate from switching operators and was proceeding back toward the hotel at approx. 5MPH when he heard his brother yell and they were then struck. He was thrown into the water but was able to climb back out. He sustained pain to his left leg and back area. 
   
  V2 occupant related that he had been operating the PWC and he and his brother hit a wake and had both fallen off, When they climbed back on the ski his brother, Operator2 climbed onto the ski first and took the controls. He climbed onto the back of the ski and they began to leave the area. This was the first time that his brother had operated the ski and they were proceeding slowly, approx. 5MPH., in a straight westerly direction when he heard the other ski and saw that impact was imminent, he let out a yell. He was then thrown from the ski, He was retrieved from the water by a passerby but knew that he had broke his leg due to it being deformed. He related he was wearing his PFD at the time of the crash. 
   
  Investigation; I responded to the Westin Hotel in which Caribbean Concessions Inc. operates a vessel and PWC livery operation. Upon arrival I observed the area of the crash to be the Dana Shores lagoon area which is an open speed zone with no designated restrictions or swim zones in the area. The weather was clear and there was a light wind which kept the waters calm. 
   
  I then met with and interviewed Operator1 taking his interview. I then examined the both PWCs and observed that V#1 had no significant damage other than some scrapes on the bottom of the hull where it had ridden on top of V#2. 
   
  V#2 had damage along the port side to include significant cracking of the outer hull and forward to the main seat and body of the PWC tearing the seat and plastic covering/shielding. 
   
  Based on the damage observed it was obvious that V#1 was proceeding at speed when impact occurred and that it had approached from the rear of V#2 at an angle. 
   
  I then met with the owner of the Caribbean Concessions Inc. and checked the temporary boating testing forms for the operators; Operator1 took the exam on 5/14/16 and was issued permit. V#2 Operator2 was issued the permit and Passenger was issued permit on 5/14/2016. 
   
  Owner related that each operator and the passenger were briefed on the operation of the ski and the safety equipment including PFD's and engine cut off devices. They further performed a safety test run and confirmed that they felt comfortable with the ski operation prior to being released from the beach area. He related he did not witness the crash. I then responded to Tampa General Hospital, as the injured parties were transported by TransCare #24 prior to my arrival. I met with and interviewed both the operator and passenger of V#2. The interviews were consistent with the damage observed on scene. No further contributing factors were noted by either subject; no weather or sea conditions, no mechanical malfunctions were noted. The operator of Vessel #1 was found to be operating the vessel in a Careless Manner in violation of
   