RedactedNarrative: Vessel traveling Westbound towards boat ramp when transom broke and engine fell off vessel.  A passerby in another vessel picked up all four occupants and brought them to shore. No injuries. Vessel is mostly sunk, but not leaking any fluids. 
  OP1 advised that he was operating the vessel towards the boat ramp in a Westerly direction. He noticed earlier in the day that one of the motor mounts was loose on the vessel transom. He advised that the vessel was traveling at an idle speed and was approximately 300 feet from the boat ramp after spending a few hours cruising on Lake Tarpon. Suddenly and without warning the transom broke off the vessel and sunk under the water, including the engine.  The vessel immediately began taking on water from the stern.  All occupants then put on life jackets and signaled a passerby in a vessel.  The passerby came to the sinking vessel and picked up all occupants and took them to shore. Upon arriving on-shore EMS checked them out and all occupants refused further service.
  	All visible and floating debris was removed from the water by TSFD and OP1.
  	OP1 then boarded another vessel that volunteered to go back to the capsized vessel and pull it to shore. Vessel was then secured to the shore by the boat ramp so not to be a hazard to other vessels.  The park staff was notified that the vessel might be there for a couple of days until it could have it removed.
  