Maybe be more merciful to just give them copious amounts of alcohol followed by a Viking funeral. To make it more interesting, you could fire flaming arrows from the bow and use the ship’s speed coupled with wind and lob the arrows in.
I would not waste good booze on those morons...
Gasoline, yes... Bourbon, not just “no”, but “HELL no!”
Well... maybe a bottle of Ripple, Colt .45, or Thunderbird...from the description of their behavior, I’d say that’s probably more up their alley, as it were...
:^)