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  2. File:External floating roof tank (double deck).png - Wikipedia

    en.wikipedia.org/wiki/File:External_floating...

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  3. Deck (ship) - Wikipedia

    en.wikipedia.org/wiki/Deck_(ship)

    Hurricane deck: (river steamers, etc.) the upper deck, usually a light deck, erected above the frame of the hull (deriving its name from the wind that always seemed to blow on the deck). [ 4 ] Lido deck : Open area, typically at or near the stern of a passenger ship, housing the main outdoor swimming pool and sunbathing area.

  4. Ballast tank - Wikipedia

    en.wikipedia.org/wiki/Ballast_tank

    Cross section of a vessel with a single ballast tank at the bottom. A ballast tank is a compartment within a boat, ship or other floating structure that holds water, which is used as ballast to provide hydrostatic stability for a vessel, to reduce or control buoyancy, as in a submarine, to correct trim or list, to provide a more even load distribution along the hull to reduce structural ...

  5. Frame (nautical) - Wikipedia

    en.wikipedia.org/wiki/Frame_(nautical)

    In wooden shipbuilding, each frame is composed of several sections, so that the grain of the wood can follow the curve of the frame. Starting from the keel, these are the floor (which crosses the keel and joins the frame to the keel), the first futtock , the second futtock , the top timber , and the rail stanchion . [ 1 ]

  6. External floating roof tank - Wikipedia

    en.wikipedia.org/wiki/External_floating_roof_tank

    An external floating roof tank is a storage tank commonly used to store large quantities of petroleum products such as crude oil or condensate. It consists of an open- topped cylindrical steel shell equipped with a roof that floats on the surface of the stored liquid.

  7. DD tank - Wikipedia

    en.wikipedia.org/wiki/DD_tank

    DD tanks worked by erecting a canvas 'flotation screen' around the tank, which enabled it to float in water. 'Duplex drive' refers to the fitted propellers allowing propulsion through water, which supplemented the usual track propulsion used when the flotation screens were lowered upon landing to fight as an ordinary tank.