Combined diesel and diesel
Two-compression-ignition-engine, one-drive shaft propulsion
Combined diesel and diesel (CODAD) is a propulsion system for ships using two diesel engines to power a single propeller shaft.
01System
| 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 | (CONAS) |
| Integrated electric propulsion | (IEP or IFEP) |
A gearbox and clutches enable either of the engines or both of them together to drive the shaft. Two advantages over simply using a single, larger diesel engine of the same total power output are that (1) diesel engines have somewhat better specific fuel consumption at 75% to 85% max output than they do at only 50% output, and (2) there is a weight and size advantage to using two higher-speed engines compared to a single lower-speed engine, even with the slightly larger gearbox system.
02CODAD vessels
Passenger and Car Ferry Ships
Containerships
Coast Guard Offshore General-Purpose Cutters
Coast Guard Offshore Security Patrol Cutters
Coast Guard Multi-mission Cutters
Coast Guard Interceptor Cutters
- Aso-class patrol vessel
- Hateruma-class patrol vessel
- Hida-class patrol vessel
- Anping-class cutter
- Tsurugi-class patrol vessel
Coast Guard Security Cutters
Patrol Corvettes / Navy OPVs
Corvettes
- Bung Karno-class corvette
- Bung Tomo-class corvette
- Diponegoro-class corvette
- Doha-class corvette
- Jacinto-class corvette
- Kasturi-class corvette
- Laksamana-class corvette
- Parchim-class corvette
- Steregushchiy-class corvette
- Tuo Chiang-class corvette
- Type 056 corvette
Frigates
- Formidable-class frigate
- Frégate de Défense et d'Intervention
- Jose Rizal-class frigate
- La Fayette-class frigate
- Lekiu-class frigate
- Maharaja Lela-class frigate
- Miguel Malvar-class frigate
- RN Type-31 Inspiration-class
- Tamandaré-class frigate
- Type 054A frigate
LSDs (landing ships, dock)
LPDs (landing platforms, dock)
- Endurance-class landing platform dock
- Galicia-class landing platform dock
- Makassar-class landing platform dock
- Tarlac-class landing platform dock
Amphibious Flat-topped Ships
FACs (fast attack-craft)
Cruise Ships
- MV Piano Land (formerly MV Oriana)
Sources and credits
This article is adapted from the Wikipedia article “Combined diesel and diesel”, written by its contributors and licensed under CC BY-SA 4.0. Fathomly has changed the layout, removed citation markers, navigation and maintenance notices, and adjusted punctuation. This adapted version is shared under the same license. For references, see the original article.
Images, from Wikimedia Commons:
- CODAD-diagram.png by No machine-readable author provided. Alureiter~commonswiki assumed (based on copyright claims)., Public domain
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