RedactedNarrative: At approximately 10:30 am on 9-4-09 had launched my boat referred to as boat #1 at teh Plymouth WA Core of Eng boat launch.  Boat was the dock and I was holding line waiting for son to come back  from taking TLL and pickup to park.  There was tow boat dock the upriver side had a boat tied to it my boat was on opposite side down river side of dock.  This launch area is only wide enough for two boats.  Another boat and P1 could not wait for us to clear dock he backed his boat down between out boats leaving only about a foot of space between.  He launched his boat and as it came off his trim he gunned his motor and headed up ramop his boat trailer smashed into back of my boat knocking it forward where I was standing it smashed forward hitting me below the knee cartilage and knocked me back into dock hurting left hip.  The front of my boat went udner dock knowing off my depth finder.  I was rushed to Kaleck Hosptial in Richland for x rays of leg and hip.  Called 911 and Benton CSO came to Kalacke and interviewd me.
NameOfBodyOfWater: Columbia River
NearestCityTown: Plymouth                      