Combined steam and gas

Principle of a COSAG propulsion system

Combined steam and gas (COSAG) is a propulsion system for ships using a combination of steam turbines and gas turbines to power the shafts.

Combined marine propulsion

Combined diesel or gas (CODOG)
Combined diesel and gas (CODAG)
Combined diesel-electric and diesel (CODLAD)
Combined diesel–electric and gas (CODLAG)
Combined diesel and diesel (CODAD)
Combined steam and gas (COSAG)
Combined gas or gas (COGOG)
Combined gas and gas (COGAG)
Combined gas and steam (COGAS)
Combined nuclear and steam propulsion (CONAS)
Integrated electric propulsion (IEP or IFEP)