I was on water  patrol in a marked capacity north of 79th Street Causeway Melloy channel, within Miami-Dade County. I observed a vessel later identified as a 29' Sea Ray, bearing FL 6970 PF, traveling southbound in the Melloy channel. I was approximately 400 feet away, when I observed the above mentioned vessel collide with a red channel marker. I approached the vessel. As I was approaching,  I observed  the  operator and the passengers onboard the vessel started to scream that  their  friend later identified had been thrown overboard.
I immediately searched the water surrounding the crash site. I saw a Friend floating in the water yelling for help. I threw him a type IV flotation device which he was able to hold onto. I approached him and pulled him inside my vessel. 
Once aboard my vessel I saw that Friend had an open wound on his head, I made contact with Miami Dispatch Center and request an EMS personnel at the Shuckers Bar and Grill dock area. I transported Friend to Shuchers and at approximately 1858 hrs EMS personnel arrived at the dock. Friend was transported to the Jackson Hospital Ryder Trauma Center. 
Afterwards, I conducted an initial on- scene investigation. After I completed the investigation, I cited operator with a reckless operation of a vessel, a violation of F.S 327.33(1), and no boating ID card, a violation of F.S 327.395(1)



Subject had a laceration on the right side upper head, EMS transported the subject  to Jackson Memorial Trauma Center.
NORTH BAY                     