CODOG Propulsion Configuration: How an LM2500 Fits Into a Combined Diesel or Gas System
What is CODOG propulsion
The basic concept allows propulsion machinery with different operating characteristics to be used for different operating requirements.
Diesel machinery can serve one operating regime while the gas turbine can provide another propulsion option when required by the vessel's design.
The LM2500 family has a substantial history in marine propulsion, making the relationship between the turbine and marine propulsion architecture an important topic for anyone researching the platform.
Readers can explore the LM2500 itself in interactive 3D to understand the gas turbine as a physical machine before considering how it integrates into a wider propulsion train.
These acronyms should not be used interchangeably.
CODOG — Combined Diesel Or Gas: diesel or gas-turbine propulsion is selected according to the system architecture.
COGAG — Combined Gas And Gas: multiple gas turbines can be combined in the propulsion arrangement.
CODAG — Combined Diesel And Gas: the architecture permits diesel and gas-turbine power to be combined for relevant operating modes.
The exact implementation is vessel-specific, so a generic schematic should always be labeled conceptual.
Traditional propulsion diagrams are excellent for showing energy paths but poor at showing what the actual equipment looks like internally.
A stronger digital experience can connect:
CODOG diagram → LM2500 → 3D turbine → system → component → technical knowledge
That is where a Digital Product Twin of the LM2500 complements the conventional propulsion schematic.