1987 Wellcraft inboard vessel was just launched.  Operator stated he had blower on and hatch open.  While attempting to start, vessel caught fire.  Operator discharged one fire extinguisher, but he and two passengers were forced to jump overboard at ramp area.  Operator may have injured his leg  but refused treatment.  Vessel was a loss.  Fire marshal declared cause to be equipment malfunction- fuel system.
Charlestown                   