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  2. Maritime hydraulics in antiquity - Wikipedia

    en.wikipedia.org/wiki/Maritime_hydraulics_in...

    The bilge pump was an improvement on the first hydraulic pumps used in antiquity: force pumps. Invented around the early 3rd century BCE, the most primitive design of a force pump consisted of a piston pushing water out of a tube, constructed by soldering individual bronze elements (Stein 246).

  3. Bilge pump - Wikipedia

    en.wikipedia.org/wiki/Bilge_pump

    A bilge pump is a water pump used to remove bilge water. Since fuel can be present in the bilge, electric bilge pumps are designed to not cause sparks. Electric bilge pumps are often fitted with float switches which turn on the pump when the bilge fills to a set level. Since bilge pumps can fail, use of a backup pump is often advised. The ...

  4. Bilge - Wikipedia

    en.wikipedia.org/wiki/Bilge

    Bilge compartment in a steel hulled ship (looking down) Bilge compartment and pump. The bilge / b ɪ l dʒ / of a ship or boat is the part of the hull that would rest on the ground if the vessel were unsupported by water. The "turn of the bilge" is the transition from the bottom of a hull to the sides of a hull.

  5. Nemi ships - Wikipedia

    en.wikipedia.org/wiki/Nemi_ships

    Both ships had several hand-operated bilge pumps that worked like a modern bucket dredge, the oldest example of this type of bilge pump ever found. The pumps were operated by what may have been the oldest crank handles yet discovered; [ 11 ] however, the reconstruction of the cranked pump from fragments, including a wooden disk and an eccentric ...

  6. Oily water separator (marine) - Wikipedia

    en.wikipedia.org/wiki/Oily_water_separator_(marine)

    Bilge water is a nearly-unavoidable byproduct of shipboard operations. Oil leaks from running machinery such as diesel generators, air compressors, and the main propulsion engine. Modern OWSs have alarms and automatic closure devices which are activated when the oil storage content of the waste water exceeds a certain limit(15ppm : 15 cm3 of ...

  7. Hand pump - Wikipedia

    en.wikipedia.org/wiki/Hand_pump

    A chain pump is made of an endless chain carrying a series of discs that descend into the water, and then ascend inside a tube, carrying with them a large quantity of water. They are a simply made, old hand-powered pumping technology [10] In the 18th century they were used as ship's bilge pumps. [11]

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