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  2. Tank classification - Wikipedia

    en.wikipedia.org/wiki/Tank_classification

    Medium and Heavy tanks were used in the early stages of the cold war, but have gradually been phased out by the multi-role Main Battle Tank. Heavy tanks grew to the point of being logistically problematic, such as the Conqueror and IS-3, while the MBT became capable of filling their battlefield role in a comparatively Medium form-factor. In ...

  3. United States Navy 1975 ship reclassification - Wikipedia

    en.wikipedia.org/wiki/United_States_Navy_1975...

    From 1950 to 1975, frigates were a new type, midway between cruiser and destroyer sizes, intended as major task force escorts. The first ship of the type was a redesignated ASW cruiser; the next four were very large AAW (gun) destroyers (DL), and the remainder were essentially oversize guided missile destroyers classified

  4. Hull classification symbol - Wikipedia

    en.wikipedia.org/wiki/Hull_classification_symbol

    DLG: Destroyer leader, guided missile (later frigate) (abolished 30 June 1975) DLGN: Destroyer leader, guided missile, nuclear-propulsion (later frigate) (abolished 30 June 1975) The DL category was established in 1951 with the abolition of the CLK category. CLK 1 became DL 1 and DD 927–930 became DL 2–5. By the mid-1950s the term destroyer ...

  5. Frigate - Wikipedia

    en.wikipedia.org/wiki/Frigate

    A frigate (/ ˈ f r ɪ ɡ ɪ t /) is a type of warship. In different eras, the roles and capabilities of ships classified as frigates have varied. The name frigate in the 17th to early 18th centuries was given to any full-rigged ship built for speed and maneuverability, intended to be used in scouting, escort and patrol roles. The term was ...

  6. Naval ship - Wikipedia

    en.wikipedia.org/wiki/Naval_ship

    Heavy cruiser; Light cruiser; Destroyer; Frigate; Corvette; Patrol boat; Fast attack craft; Some classes above may now be considered obsolete as no ships matching the class are in current service. There is also much blurring and gray areas between the classes, depending on their intended use, history, and interpretation of the class by ...

  7. List of frigates of the United States Navy - Wikipedia

    en.wikipedia.org/wiki/List_of_frigates_of_the...

    Prior to the 1975 ship reclassification, ships that are now classified as FF or FFG were classified as DE or DEG (destroyer escort). The Oliver Hazard Perry class has been retired from active duty in the Navy as of 2015, and use has been replaced by the Littoral Combat Ship , to be augmented by the planned Constellation class guided-missile ...

  8. Warship - Wikipedia

    en.wikipedia.org/wiki/Warship

    Frigate, originally a medium-sized sailing ship. Although they date back to the 17th century, frigates in modern navies are typically used to protect merchant ships and other warships. Armoured frigate are frigates with armour which was added to ships based on existing frigate and ship of the line designs. The additional weight of the armour on ...

  9. Type 23 frigate - Wikipedia

    en.wikipedia.org/wiki/Type_23_frigate

    The Type 23 frigate or Duke class is a class of frigates built for the United Kingdom's Royal Navy. The ships are named after British Dukes , thus leading to the class being commonly known as the Duke class.