Joe cleans the ship and fixes what need to be fixed. basically a janitor at sea. Here is a little quote from joe "clean the ship, remove dust from the ship. makes sure the rust doesn't corrode beneath the feet of science" He has been working for about eight years. out of everything why this he said because it was the first job offered to him on a ship and just stuck with it. he has been to about every continent. he likes what he does.