On 8/10/13 at about 1800 hours, V-1 was heading south on an airboat trail north of SR44 and west of the Withlacoochee River.  V-1 was approaching a T intersection in a S curve in the airboat trail.  Another unidentified vessel came off of the T airboat trail and cut in front of V-1. The unidentified vessel came from the port side of V-1.  V-1 hit the wake of the unidentified vessel at a parallel angle and water came over the port side.  Operator1 turned V-1 to the right and then back to the left to attempt a 180.  The forward momentum of V-1 continued and pushed V-1 into the trees/bushes.  Operator1 observed a cut off branch with a point coming at his face.  He threw his right arm up to protect his face and the tree limb punctured his right forearm from his elbow to his wrist.  The impact knocked him from the seat and wedged him in between the seat and steering stick.  His son arrived shortly after and stepped on the port side of the gunwale to help.  V-1 then sank in three feet of water.  Operator1 was transported to Ocala Regional Hospital.          ; Operator received about 14 stitches.