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  2. Martin JRM Mars - Wikipedia

    en.wikipedia.org/wiki/Martin_JRM_Mars

    The Martin JRM Mars is a large, four-engined cargo transport flying boat designed and built by the Martin Company for the United States Navy during World War II.It was the largest Allied flying boat to enter production, although only seven were built.

  3. Naval Inactive Ship Maintenance Facility - Wikipedia

    en.wikipedia.org/wiki/Naval_Inactive_Ship...

    Aircraft carriers stored at the NISMF in Bremerton, 2012.From left to right: Independence, Kitty Hawk, Constellation and Ranger. A Naval Inactive Ship Maintenance Facility (NISMF) is a facility owned by the United States Navy as a holding facility for decommissioned naval vessels, pending determination of their final fate.

  4. Flying boat - Wikipedia

    en.wikipedia.org/wiki/Flying_boat

    Short S23 "C" Class or "Empire" flying boat A PBM Mariner takes off in 1942 Dornier X in 1932. A flying boat is a type of seaplane with a hull, allowing it to land on water. [1] It differs from a floatplane in having a fuselage that is purpose-designed for flotation, while floatplanes rely on fuselage-mounted floats for buoyancy.

  5. 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 ...

  6. Marine evacuation system - Wikipedia

    en.wikipedia.org/wiki/Marine_evacuation_system

    The MES consists of five components. Controls – used to initiate the device in an emergency situation. [9]Stowage box – contains essentials for the evacuation, including the chute and the fixed appliances, such as seats, rails, etc. [10] Composed of marine grade aluminum along with inflation cylinders, usually kept on the deck taking as little as 4 m 2 of storage space.

  7. Flyboard - Wikipedia

    en.wikipedia.org/wiki/Flyboard

    The Flyboard was the subject of a lawsuit from competitor Jetlev which was dropped without prejudice in March 2013. [4] The device was presented to the public for the first time at the jet ski World Championship 2012 in China. [3] Since its introduction in 2012 the Flyboard has sold around 2500 units.

  8. Ship stability - Wikipedia

    en.wikipedia.org/wiki/Ship_stability

    Ship stability, as it pertains to naval architecture, has been taken into account for hundreds of years. Historically, ship stability calculations relied on rule of thumb calculations, often tied to a specific system of measurement. Some of these very old equations continue to be used in naval architecture books today.

  9. Marine propulsion - Wikipedia

    en.wikipedia.org/wiki/Marine_propulsion

    Marine propulsion is the mechanism or system used to generate thrust to move a watercraft through water. While paddles and sails are still used on some smaller boats, most modern ships are propelled by mechanical systems consisting of an electric motor or internal combustion engine driving a propeller, or less frequently, in pump-jets, an impeller.