RedactedNarrative: Operator2 of dandridge tennessee operated a 2007 bass tracker vessel bearing hin buj04358d707 on douglas lake, jefferson county, tennessee on july 26, 2014. vessel will be known as vessel (2). Operator1 of sevierville tennessee operated a 1973 flote boat bearing hin tnz00177j313 on douglas lake, jefferson county, tennessee on july 26, 2014. Operator1''s vessel will be known as vessel (1). 
  
  Operator2 and his guests had finished their cruise of douglas lake. Operator2 loaded vessel (2) onto its trailer at the twra access area in dandridge, tennessee. While Operator2 and his guests were standing on the floating dock beside the trailered vessel, Operator1 and his passenger pulled vessel (1) toward the floating dock to pickup one person. As vessel (1) neared vessel (2), Operator1 attempted to place the gear selector in reverse. When Operator1 moved the gear selector, the mechanism failed and caused vessel (1) to accelerate into vessel (2). This unexpected acceleration caused a collision between vessel (1) and vessel (2) that resulted in a large dent with scratches in the side of vessel (2).