RedactedNarrative: Passenger stated that vessel B was coming up beside vessel A.  They said vessel B kept speeding up and then slowing down.  
  
  The operator of vessel A observed vessel B for approximately 2 minutes prior to the collision.  
  
  The operator of vessel B turned abruptly in front of vessel A.  Vessel A struck the stern of vessel B and then impacted the operator.  
  
  Vessel A stopped after impact and assisted operator of vessel B to shore where he was transported to Bryan West Hospital.