Not quite an unusual way to die, but in unusual circumstances....
My wife's uncle had been a seaman on the cross channel ferries. When he retired, he had some kind of "pass" that got him a number of free crossings every year.
He would use them to go on some crossings to spend time with his former colleagues. They would have a beer and chat about old times.
One day, whilst on a ferry en route to France, he dropped down dead, in the crew rest room. It would have been a beauraucratic nightmare to sort this out with the French authorities, so he was quietly left alone until the ship was back in UK waters on the return trip, whereupon the matter was reported to the Captain, and UK legal processes took over.
If you've got to go, checking out amongst your mates with a beer in your hand seems as good a way as any!