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  • propulsion system: COGOG

    propulsion systems
    Naval Engine

    Combined gas or gas (COGOG) is a type propulsion system using only gas turbine engines.

    A high efficiency, low output turbine is used for cruising speeds with a high output turbine being used for high-speed operations. A clutch allows either turbine to be selected, but there is no gearbox to allow operation of both turbines at once.

    Used by

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    1972CA Destroyer Iroquois class1
    1974UK Frigate Type 21 Amazon class1
    1975UK Guided-Missile Destroyer Type 42 (Batch 1 and 2) class2
    1975US Destroyer Spruance class2
    1975NL Guided-Missile Frigate Tromp class1
    1978NL Frigate Kortenaer class1
    1979UK Frigate Type 22 (Batch 1) Broadsword class2
    1981US Guided-Missile Destroyer Kidd class2
    1982RU Guided-Missile Cruiser Project 1164 Atlant class2
    1982JP Destroyer Hatsuyuki class2
    1983US Guided-Missile Cruiser Ticonderoga class2
    1983UK Frigate Type 22 (Batch 2) Boxer class2

    In Service

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    CA Canadian Armed Forces
    PK Pakistan Navy
    UK Royal Navy
    NL Royal Netherlands Navy
    US US Navy
    RU Russian Navy
    JP Japanese Navy
    CL Chilean Navy

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