RedactedNarrative: VESSEL 1 WAS TRAVELLING SOUTH ACROSS HUDSON BAY NO WAKE ZONE AFTER LAUNCHING AT HUDSON PUBLIC BOAT LAUNCH. AN EXPOLSION OCCURED IN ENGINE COMPARTMENT CAUSING BURNS TO OPERATOR AND PASSENGER 1 LEGS. DEBRIS WAS THROWN ACROSS BOAT. OPERATOR REPORTED HE HAD JUST BOUGHT THE BOAT THAT DAY AND IT WAS NOT FAMILIAR WITH USING BLOWERS. OPERATOR STATED PREVIOUS OWNER DID HAVE A NEW ENGINE INSTALLED AT SOME POINT.