The owners of the 30-foot boat anchored it for the day and took a dinghy to shore. A short while later, around 1:30 p.m. people at the marina noticed smoke billowing from the boat and called 911.
Fire boats from with East Jefferson Fire and Rescue arrived and towed the burning boat away from the marina, said Chief Gordon Pomeroy.
"It was cooking pretty good," Pomeroy said.
Numerous explosions were heard as the boat burned, Pomeroy said. The owner told fire officials there was propane on board and he had been having trouble with a pilot light on his stove for the past several days.
Video from Air 4 showed the boat completely engulfed in flames while a fire boat and Coast Guard cutter were spraying water in efforts to extinguish the blaze.
No one was injured, Pomeroy said, and no other boats were damaged.