RedactedNarrative: On Saturday, April 21, 2018 at approximately 1727 hours, a single vessel boating accident occurred ½ mile offshore of Sanibel Island, in Lee County, FL. The accident occurred in the Gulf of Mexico at approximate coordinates N26° 26.179 W82° 07.629. V-1 was headed southeast along the coast of Sanibel Island, when the engine room caught on fire. The vessel occupants navigated the vessel towards the beach, at which time they abandoned the vessel and swam safely to shore. No injuries were reported. Prior to the accident the occupants had noticed the batteries had stopped charging, and the battery gauges were fluctuating, indicating that machinery failure related to the electrical system was the most probable cause of the fire.