The operator of a 1974 Renkin Cudy cabin gas inboard stated to NRP investigators that his blower was on the entire time he was refueling.  When he started the engine he heard a loud "Poof" noise and recognized the sound as a fire in the engine compartment.  He discharged his fire extinguisher and evacuated the two other occupants.  The fire still did not go out and he had also burned his finger and part of his hand.  Bystanders were able to get the vessel away from the dock where work boats were moored and secured to a piling.  The operator was also able to get off with only the slight burn.  The vessel was engulfed with flame and started taking on water.  After the local VFD put out the fire the operator was able to secure it on his trailer.  The vessel was a total loss.  The operator was given first aid but refused to be transported to the hospital.  NRP completed research on the internet for old Renkin boats and estimated the value at $4000.  Later examination showed a leak in the filler hose allowing raw gas to pour into the engine compartment.
Tighman