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  2. Waterline - Wikipedia

    en.wikipedia.org/wiki/Waterline

    The waterline is the line where the hull of a ship meets the surface of the water. A waterline can also refer to any line on a ship's hull that is parallel to the water's surface when the ship is afloat in a level trimmed position. Hence, waterlines are a class of "ships lines" used to denote the shape of a hull in naval architecture lines ...

  3. Hull (watercraft) - Wikipedia

    en.wikipedia.org/wiki/Hull_(watercraft)

    A hull is the watertight body of a ship, boat, submarine, or flying boat. The hull may open at the top (such as a dinghy), or it may be fully or partially covered with a deck. Atop the deck may be a deckhouse and other superstructures, such as a funnel, derrick, or mast. The line where the hull meets the water surface is called the waterline.

  4. Draft (hull) - Wikipedia

    en.wikipedia.org/wiki/Draft_(hull)

    A ship's draft/draught is the "depth of the vessel below the waterline measured vertically to the lowest part of the hull, propellers, or other reference point". [1] That is, the draft or draught is the maximum depth of any part of the vessel, including appendages such as rudders, propellers and drop keels if deployed.

  5. Waterline length - Wikipedia

    en.wikipedia.org/wiki/Waterline_length

    The hull speed is the speed at which the wavelength of the bow wave stretches out to the length of the waterline, thus dropping the boat into a hollow between the two waves. While small boats like canoes can overcome this effect fairly easily, heavier sailboats cannot.

  6. List of ship directions - Wikipedia

    en.wikipedia.org/wiki/List_of_ship_directions

    Centerline or centreline: an imaginary, central line drawn from the bow to the stern. [1] Fore or forward: at or toward the front of a ship or further ahead of a location (opposite of "aft") [1] Preposition form is "before", e.g. "the mainmast is before the mizzenmast". Inboard: attached inside the ship. [15] Keel: the bottom structure of a ...

  7. Glossary of nautical terms (A–L) - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_nautical_terms...

    between wind and water The part of a ship's hull that is sometimes submerged and sometimes brought above water by the rolling of the vessel. bight 1. A loop in a rope or line – a hitch or knot tied "on the bight" is one tied in the middle of a rope, without access to the ends. [2] 2. An indentation in a coastline. bilander

  8. Hull speed - Wikipedia

    en.wikipedia.org/wiki/Hull_speed

    Hull speed or displacement speed is the speed at which the wavelength of a vessel's bow wave is equal to the waterline length of the vessel. As boat speed increases from rest, the wavelength of the bow wave increases, and usually its crest-to-trough dimension (height) increases as well.

  9. Ship measurements - Wikipedia

    en.wikipedia.org/wiki/Ship_measurements

    Used mainly to determine the minimum water depth for safe passage of a vessel and to calculate the vessel's displacement (obtained from ship's stability tables) so as to determine the mass of cargo on board. Draft, Air – Air Draft/Draught is the distance from the water line to the highest point on a ship (including antennas) while it is ...