Deck-hand is a common term used to describe a person who works on a ship or boat. However, there are several other synonyms that can be used to describe this role. Some of the synonyms for deck-hand include sailor, seaman, mariner, crew member, boatman, and deck crew. Each of these terms refers to a person who is responsible for performing various duties on the deck of a ship, including handling ropes, tying knots, and maintaining the vessel's equipment. Regardless of the term used, a deck-hand's role is essential to the successful operation of any ship or boat, and their skills and expertise are critical to ensuring the safety of everyone on board.