Cargo ship jobs include any positions involved in helping container ships transport freight from port to port across the world. Some of the different jobs include the captain, officers of the watch, engineers, electricians, other skilled tradespeople, and workers in the steward’s department. Your duties in each of these jobs differ significantly. For example, as a deckhand or able seaman, you maintain a clean and safe deck, paint the ship, and haul cargo. Deck officers oversee the deck, set watch, and report any issues to the captain or other deck masters. As the captain, you oversee the overall operation of the ship.