what part of the ship is the hull
Hull (watercraft) The hull is the watertight body of a ship or boat. Above the hull is the superstructure and/or deckhouse, where present. The line where the hull meets the water surface is called the waterline.
Seaman The term "seaman" is also a general-purpose for a man or a woman who works anywhere on board a modern ship, including in the engine spaces, which is the very opposite of sailing. This is untrue in the US Navy where a sailor might be a seaman but not all US Navy sailors are a 'Seaman' as they might be an Airman, Fireman, Constructionman, or Hospital Corpsman. Furthermore, "seaman" is a short form for the status of an "able-bodied seaman," either in the navies or in the merchant marines. An able-bodied seaman is one who is fully trained and qualified to work on the decks and superstructure of modern ships, even during foul weather,[2] whereas less-qualified sailors are restricted to remaining within the ship during times of foul weather â€” lest they be swept overboard by the stormy seas or by the high winds.