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  2. 4-4-2 (locomotive) - Wikipedia

    en.wikipedia.org/wiki/4-4-2_(locomotive)

    The 4-4-2T is the tank locomotive equivalent of a 4-4-0 American type tender locomotive, but with the frame extended to allow for a fuel bunker behind the cab. This necessitated the addition of a trailing truck to support the additional weight at the rear end of the locomotive. As such, the tank version of the 4-4-2 wheel arrangement appeared ...

  3. List of U-boat types - Wikipedia

    en.wikipedia.org/wiki/List_of_U-boat_types

    Enhanced fleet ocean boat with better diving abilities IXD1: 1940 2 [1] Heavy diesel boat, suffered from numerous design flaws. Rebuilt as long range transports IXD2: 1940 28 Heavy diesel engine long range fleet boat. Heaviest and largest of the IX series IXD/42: 1942 2 [2] (+ 4 cancelled) Attempt to upgrade the heavy diesel engine design.

  4. Hamming (7,4) - Wikipedia

    en.wikipedia.org/wiki/Hamming(7,4)

    The Hamming(7,4) code is closely related to the E 7 lattice and, in fact, can be used to construct it, or more precisely, its dual lattice E 7 ∗ (a similar construction for E 7 uses the dual code [7,3,4] 2). In particular, taking the set of all vectors x in Z 7 with x congruent (modulo 2) to a codeword of Hamming(7,4), and rescaling by 1/ √ ...

  5. Motorboat - Wikipedia

    en.wikipedia.org/wiki/Motorboat

    A motorboat is a small craft with one or more engines for propulsion. Motorboats are commonly used for work, recreation, sport, or racing. Boat engines vary in shape, size, and type. These include inboard, outboard (integrating, the engine, gearbox, and propeller in one portable unit mounted in the rear), and inboard-outboard (or “sterndrive ...

  6. Airboat - Wikipedia

    en.wikipedia.org/wiki/Airboat

    Airboat. An airboat (also known as a planeboat, swamp boat, bayou boat, or fanboat) is a flat-bottomed watercraft propelled by an aircraft-type propeller and powered by either an aircraft or automotive engine. [a] It is commonly used for fishing, hunting, recreation, and ecotourism. Airboats are a common means of transportation in marshy and/or ...

  7. Laser 4.7 - Wikipedia

    en.wikipedia.org/wiki/Laser_4.7

    95.4 [ 1] RYA PN. 1175 [ 2] [ edit on Wikidata] The Laser 4.7 or ILCA 4 is a one-design dinghy class in the Laser series and is a one-design class of sailboat. All Lasers are built to the same specifications. The Laser is 4.06 m (13 ft 10 in) long, with a waterline length of 3.81 m (12 ft 6 in). The hull weight is 59 kg (130 lb).

  8. You Must Build a Boat - Wikipedia

    en.wikipedia.org/wiki/You_Must_Build_a_Boat

    4 June 2015. Android. 11 December 2015. Genre (s) Puzzle, role-playing. Mode (s) Single-player. You Must Build a Boat is a 2015 puzzle - role-playing game developed by Luca Redwood under the developer name EightyEight Games. It is a sequel to 10000000 and was released for Microsoft Windows, Mac OS X, Android, and iOS in June 2015.

  9. Emergency service response codes - Wikipedia

    en.wikipedia.org/wiki/Emergency_service_response...

    In the United States, response codes are used to describe a mode of response for an emergency unit responding to a call. They generally vary but often have three basic tiers: Code 3: Respond to the call using lights and sirens. Code 2: Respond to the call with emergency lights, but without sirens. Alternatively, sirens may be used if necessary ...