How easy is it to get a job as a coal stoker on a cargo freighter and see the world?

A "COAL STOKER".. are you SERIOUS? What CENTURY do you live in? The last ship to use COAL to stoke the boilers went to the ship breakers about 70 YEARS AGO.. You need to go to the Seaman's Union and talk to them for full information on this.. just don't tell them you want to be a "COAL STOKER" or they will have you hauled off by the guys with the butterfly nets.... AFTER.. THEY STOP LAUGHING AT YOU.