RedactedNarrative: Striking vessel was backing up after attempting to pull forward into a haul out slip at a marina with an approaching rain storm. 
  
  Operator 1, while transmission was still in reverse, thought he was changing the shifter setting from reverse to forward but accidentally pushed the throttle forward instead for the diesel causing his vessel to back faster and thus not going into forward speed.  
  
  Striking vessel fiberglass dive platform at stern collided with an unoccupied  docked sailboat midship on the sailboat's port side.  
  
  This caused the midship starboard side of the sailboat to collide with a fixed upright post on the dock.   Sailboat port side had fiberglass damage including a small puncture, scrapes, and missing gel goat.  The starboard side had damage where the fiberglass deck cap collided with the fixed upright dock post.  Striking vessel had broken and chipped fiberglass damage to the dive platform. Occupant/passenger on board striking vessel was on the bow and did not witness collision.  No injuries were reported.
  