RedactedNarrative: On September 1, 2014 at approximately 11:45AM, Operator was operating his vessel LA1681GC, in the Shell Canal located in Terrebonne Parish, when he lost control of his vessel and hit two cypress trees. Operator was severely injured but his passenger, (son age 15) was not. At approximately 12:00PM, Agents were contacted by dispatch and advised of the accident. Agents arrived at the Bayou Black Marina at approximately 12:30 PM, and secured the scene. Agents then interviewed Occupant, and two witnesses. Operator was unresponsive due to a severe blow to the head. An Acadian helicopter then transported Operator to Thibodaux General Hospital. At approximately 1:20PM, Agent1 arrived at the scene. Agent1 then photographed the damage to the vessel (see attached). The vessel had severe damage to fiberglass on the starboard front (first impact), and severe damage to the bow (second impact). There were little shavings of wood from a cypress tree lodged in the trolling motor located in the front of the vessel. Damage to the vessel is totaled and too expensive to be repaired. Agent1 observed that the steering wheel was bent and there was blood on the speedometer where Operator's head is believed to have hit. Agent1 then turned the steering wheel and observed that it was in working order. Agents then went to the location of the accident and recorded its GPS location as N29 37 089 W90 55 952. Agent1 then photographed the two cypress trees and observed fiberglass embedded into the two trees (see attached). Agents then concluded that Operator was traveling at approximately 35 MPH when he lost control of his vessel and hit the first tree on the right front of his vessel. The vessel then ricocheted into the second tree where the very front of the vessel impacted. T he second impact is where all forward momentum stopped. At approximately 5:00PM, Agent1 interviewed Occupant. Operator advised that his father was complaining earlier that day that the steering wheel was not operating correctly and was stiff. Occupant stated that his father was driving when the wheel just cut to the left. His dad then cut the wheel to the right where it went all the way. When his father tried to recover, the steering would not budge.  Subjects were wearing their PFDs, Type 3., and Operator had his kill lanyard attached to his PFD. The vessel is equipped with remote steering. No drugs or alcohol were found or believed to be any factors in this incident.