propulsion system: COGOG

propulsion systems

Naval Engine

engines



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


1972CA Iroquois class destroyer DD 1
1974UK Type 21 Amazon class frigate FF 1
1975NL Tromp class guided-missile frigate FFG 1
1975UK Type 42 (Batch 1 and 2) class guided-missile destroyer DDG 2
1975US Spruance class destroyer DD 2
1978NL Kortenaer class frigate FF 1
1979UK Type 22 (Batch 1) Broadsword class frigate FF 2
1981US Kidd class guided-missile destroyer DDG 2
1982JP Hatsuyuki class destroyer DD 2
1982RU Project 1164 Atlant class guided-missile cruiser CG 2
1983UK Type 22 (Batch 2) Boxer class frigate FF 2
1983US Ticonderoga class guided-missile cruiser CG 2



  In Service


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








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