RedactedNarrative: On Friday, June 6th, a 50 foot Fairline vessel was running very low on fuel. The captain was trying to get the vessel to Port Eads to fuel up. The captain who was not familiar with the area tried to enter south Pass in between the last two channel markers. While trying to enter the pass, he struck a cement seawall under the water. The vessel became stranded. The captain and his 4 passengers on board stayed with the vessel all night doing what they could to save it. At approximately 2 AM, the USCG removed everyone from the vessel. The USCG left a pump on the vessel to keep it afloat. At approximately 7 AM on June 7th, Seatow arrived to assist with the pumping of the vessel and bring the passengers to Venice. At approximately 2:45 PM, Seatow and three of the passengers returned to the sinking vessel with some larger pumps. The pump supplied by the USCG was running bad and needed to be fueled. The captains son, fueled the USCG pump. when he was fueling the pump, he dripped fuel on the hot exhaust causing the fuel to ignite and explode. Everyone was ejected from the vessel. Son received burns to his body and a bad laceration to his head. Father received burns to his foot. The vessel burned to the water line before the Plaquemines Port could put the fire out. Alcohol and drugs did not appear to be a contributing factor in this incident. The vessel was equipped with the proper PFD's for all passengers. The vessel was a total loss.