RedactedNarrative: Operator and 4 friends went out on a fishing trip for squid.  They had anchored the vessel from the bow and had two generators, one on the bow and on by the helm.  These generators were running to power multiple spot lights shining down in the water to attack the squid.  The generator by helm was positioned so that the exhaust pipe was pointing towards the front of the boat.  About 1 or 2 in the morning one of the passengers went into the cuddy cabin on the boat to sleep.  The hatch door was classed while he was sleeping.  About 4 am they returned to the boat launch area to end their trip and trailer the boat.  They men could not wake their friend.  Cause of accident was fumes being allowed to vent directly towards the enclosed cuddy cabin area.
NameOfBodyOfWater: Nantucket Sound
NearestCityTown: Barnstable                    