RedactedNarrative: Vessel A was undocking from fuel dock at Merrill's Marina. While navigating out of the Marina, Operator A reported an explosion from the engine compartment and the engine stalled. A fire ensued in the engine compartment and both occupants abandoned the vessel into approximately 4 feet of water. Fire extinguishers were deployed with no effect. Boat was push out of marina, where it burned to the waterline.