RedactedNarrative: On 8/13/17 at approximately 1030 hrs, operator was operating his 2014 34ft Sunsation vessel in the vicinity of Anclote Island.  As he approached the southern end of the island, his vessel struck a submerged object in 5-6ft of water.  The impact caused the center engine to jump out of the water and all three engines to shut down.  The damage sustained caused the vessel to quickly take on water.  He made contact with USCG via VHF channel 16, relayed all pertinent information and successfully grounded the vessel in shallow water prior to sinking completely. 
  
       On 8/13/17 at approximately 1930 hrs, I photographed the vessel as it lay in approximately 3 feet of water on the southern tip of Anclote Island (See Attached Photos).
  
       On 8/17/17 at approximately 1830 hrs, I again photographed the vessel after it was removed, relocated and stored on a rack at Marker 1 Marina in Dunedin (See Attached Photos).
  
       Damage to the hull of the vessel are consistent with that of damage caused by striking an "I Beam".  I Beams are commonly used as supports for signs and markers upon state waters.  A submerged I Beam was located and marked by USCG in the days following the accident.  
  
       The submerged object impacted the hull of the vessel on its starboard side approximately midship.  The object scraped and gouged the hull all the way to the stern as the vessel traveled past  (See Attached Photos).