RedactedNarrative: On 04/15/17 responded to the Destin Harbor and east jetties in reference to a reported vessel fire. Discovered the vessel was not on fire but suffered an explosion while out in the Gulf of Mexico. 
  
  There were no reported injuries related to the explosion and the vessel was towed back to the Destin Marina for further inspection and removal from the water.  
  
  On April 24, 2017, I met with subject at Auer Marine to check the fuel levels of the vessel. subject removed the covers to the fuel sending units and noted that the fuel tanks were completely full, to the point it was coming out when the top was removed.  I asked subject if he believed it was more apparent that the fuel vent system may have over flowed the excess fuel into the splash well then into the hull of the vessel.  He stated   most likely and with the rough sea that day it may have been worse.  He also stated he still could not establish the source of ignition for the fuel vapor.