Combined nuclear and steam propulsion

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Combined
marine
propulsion

CODOG
CODAG
CODLAG
CODAD
COSAG
COGOG
COGAG
COGAS
CONAS
IEP or IFEP

Combined nuclear and steam propulsion system (CONAS) is used on the Kirov-class guided missile cruisers.

Complementary to the nuclear component there are two conventional boilers, installed as a backup in case of reactor failure. Both components are capable of driving two geared steam turbines, generating 120,000 hp (89 MW) at two prop shafts.[1]

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