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  2. Keel - Wikipedia

    en.wikipedia.org/wiki/Keel

    The keel is the bottom-most longitudinal structural element of a watercraft. On some sailboats, it may have a hydrodynamic and counterbalancing purpose as well. The laying of the keel is often the initial step in constructing a ship. In the British and American shipbuilding traditions, this event marks the beginning date of a ship's construction.

  3. Keel laying - Wikipedia

    en.wikipedia.org/wiki/Keel_laying

    The event recognized as the keel laying is the first joining of modular components, or the lowering of the first module into place in the building dock. It is now often called "keel authentication" and is the ceremonial beginning of the ship's life, although some modules may have been started months before that stage of construction. [1] [2] [3]

  4. List of ship directions - Wikipedia

    en.wikipedia.org/wiki/List_of_ship_directions

    Outboard: attached outside the ship. [20] Port: the left side of the ship, when facing forward (opposite of "starboard"). [1] Starboard: the right side of the ship, when facing forward (opposite of "port"). [1] Stern: the rear of a ship (opposite of "bow"). [1] Topside: the top portion of the outer surface of a ship on each side above the ...

  5. Boat building - Wikipedia

    en.wikipedia.org/wiki/Boat_building

    Keel: the main structural member of a traditional vessel, running fore and aft from bow to stern on its centerline. It provides ballast for stability, and resistance to leeway moving through the water. Keelson: an internal beam fixed to the top of the keel to strengthen the joint of the upper members of the boat to the keel.

  6. Keelhauling - Wikipedia

    en.wikipedia.org/wiki/Keelhauling

    Keelhauling (Dutch kielhalen; [1] "to drag along the keel") is a form of punishment and potential execution once meted out to sailors at sea. The sailor was tied to a line looped beneath the vessel, thrown overboard on one side of the ship, and dragged under the ship's keel , either from one side of the ship to the other, or the length of the ...

  7. Hogging and sagging - Wikipedia

    en.wikipedia.org/wiki/Hogging_and_sagging

    Hogging is the stress a ship's hull or keel experiences that causes the center or the keel to bend upward. Sagging is the stress a ship's hull or keel is placed under when a wave is the same length as the ship and the ship is in the trough of two waves.

  8. US vs. Chinese cruisers: China is building its top surface ...

    www.aol.com/us-vs-chinese-cruisers-china...

    The keel of the first Type 055, Nanchang, was laid in December 2014, just three months before the keel of China's first domestically built carrier, Shandong, was laid.

  9. Hull (watercraft) - Wikipedia

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

    Hull form lines, lengthwise and in cross-section. 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.