40% of global ship traffic is simply moving fossil fuels around! Renewables make much of this traffic obsolete
(media.piefed.zip)
They can install solar panels or wire or something and not have to be away from their family for months at a time. Also the vast majority of seamen shipping oil are coerced captive workers from impoverished places with confiscated passports and no rights. Employed isn’t really the right word to use.