RedactedNarrative: Boat sinking while launching.  On 9 July, 2016 at approximately 1555 hours, I, Officer of the Florida Fish and Wildlife Conservation Commission (FWC) observed a vessel sinking/sunken shortly after it was launched from a small neighborhood boat ramp. The vessel that sank was Florida registered FL 5237 GE. 
  
  The vessel was purchased five days prior to the event. Owner was in his truck backing the trailer into the water. The operator of the vessel was Operator. As the vessel was lowered into the water, Operator placed the shifter in reverse and "gunned it."  The prop wash from the propeller forced water over the transom of the vessel. The bilge pump of the vessel could not keep up with the volume of water that was entering the vessel. The vessel then slowly sank to the bottom. Operator ended up in the water standing on top of the vessel sitting on the bottom. Owner and a few good samaritans near by entered the water, attached the trailer rachet strap to the bow and was able to pull the boat off the bottom and retrailer the boat.