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  2. Shiplift - Wikipedia

    en.wikipedia.org/wiki/Shiplift

    Whereas "shiplift" is the word that is normally used, the term used by Lloyd's register is "Mechanical Lift Dock". There are two different kinds of platform design, the articulated and the rigid. [1] The articulated platform has hinged connections between the main and the longitudinal beams. A rigid platform, the beams are bolted or welded ...

  3. USCGC Fir (WLB-213) - Wikipedia

    en.wikipedia.org/wiki/USCGC_Fir_(WLB-213)

    The ship recently converted all of its lighted aids to navigation from incandescent to LED lights. Fir is the first unit in the U.S. Coast Guard to do so. [6] As a heavy lift platform Fir has a 20-ton hydraulic crane, a chain in-haul system and 4 heavy cross-deck winches. [5]

  4. SSCV Sleipnir - Wikipedia

    en.wikipedia.org/wiki/SSCV_Sleipnir

    The vessel is essentially a large platform supported by eight columns (four on each side), with one pontoon per side. Typical SSCVs use larger columns under the cranes to provide support, which can lead to severe pitching in rough seas; SSCV Sleipnir uses columns that are symmetrical fore and aft for calmer motions under higher sea states.

  5. Semi-submersible platform - Wikipedia

    en.wikipedia.org/wiki/Semi-submersible_platform

    A semi-submersible platform is a specialised marine vessel used in offshore roles including as offshore drilling rigs, safety vessels, oil production platforms, and heavy lift cranes. They have good ship stability and seakeeping , better than drillships .

  6. Lighter aboard ship - Wikipedia

    en.wikipedia.org/wiki/Lighter_aboard_ship

    The lift, known as a "Syncrolift" was a platform that could be lowered below the water surface. Two lighters weighing up to 1,000 metric tons are maneuvered onto the submerged platform and raised to the height of the deck, where special rails engage and transport the lighters down the length of the ship to their berthings.

  7. Pioneering Spirit - Wikipedia

    en.wikipedia.org/wiki/Pioneering_Spirit

    Two tilting lift beams for the installation or removal of the steel jackets used for fixed platforms, up to 25,000 tonnes (28,000 short tons) in weight, will be located at the vessel's stern. [27] The lift beams for the Jacket Lifting System were installed in 2021. [6]

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