An ordinary seaman is an entry-level crew member of a merchant vessel. However, there are several other synonyms for this job title, including deckhand, able seaman, rating, sailor, or just seaman. These job titles may vary slightly in their job duties, but they all work together to ensure the smooth operation of the ship and its cargo. They may assist with navigation, maintenance, or cargo handling. An ordinary seaman may have a range of responsibilities, such as painting the ship, cleaning the decks, or assisting with mooring lines. Regardless of their exact job title, all seamen play an essential role in the day-to-day workings of a ship and the maritime industry as a whole.