RedactedNarrative: VESSEL #2 WAS 200 YDS EAST OF THE WEST SHORELINE OF THE CHANNEL AND 1/4 MILE NORTH OF DAM WITH MOTOR NOT RUNNING. VESSEL OPERATOR OF UNIT #2 HAD JUST PULLED UP ANCHOR WHEN VESSEL #1 WAS EATBOUND AND FAILED TO SEE UNIT #2 BECAUSE OPERATOR OF VESSEL  #1 DID NOT PUT HIS FRONT SEAT DOWN BEFORE TAKING OFF CAUSING VESSEL #1 TO COLLIDE WITH VESSEL #2 STRIKING VESSEL #2 IN PORT STERN AREA. POR FOR BOTH VESSELS WAS NOT DETERMINED DUE TO BOTH OPERATORS LEAVING THE SCENE TO LOAD UP.