RedactedNarrative: Operator had just launched his vessel from the Astoria Access Area. Operator was traveling up river from the ramp, and was almost on plane when he lost steering and took a sharp turn to the left.  The steering cable was broken and caused subject to lose control of the vessel.  Operator was not able to take the vessel out of gear before he struck a tree.  Operator had a cut on his right hand that required more than first aid.  Operator used a PFD to swim to shore.   He did not have any alcohol or drugs that would have contributed to the incident.