CAT Ship Engine (Propulsion Engines)
The Caterpillar (CAT) brand is globally recognized as the gold standard for marine propulsion, delivering unmatched power and absolute dependability where it matters most—out on the open ocean. Designed to serve as the beating heart of commercial vessels, tugboats, fishing fleets, and cargo ships, CAT marine propulsion engines are legendary for their rugged quality and heavy-duty durability. These engines are purpose-built to endure continuous, high-load operations under the most grueling marine conditions. Infused with CAT’s pioneering electronic control and advanced fuel injection technologies, they provide exceptional torque, rapid throttle response, and maximum fuel efficiency. Furthermore, their robust design ensures extended component life and long intervals between overhauls, significantly lowering total cost of ownership. For decades, ship owners have trusted CAT’s uncompromising quality to navigate safely, optimize transit times, and power through the demanding maritime routes of the world.
Engine power range
| Model | Power Range (kW) | Emission | Frequency | Origin |
|---|---|---|---|---|
| C7.1 | 209 – 317 | EPA Tier 3 / IMO II | 50/60 Hz | USA |
| C9.3 | 280 – 355 | EPA Tier 3 / IMO II | 50/60 Hz | USA |
| C12 | 254 – 366 | EPA Tier 3 / IMO II | 50/60 Hz | USA |
| C18 | 339 – 747 | EPA Tier 3 / IMO II / IMO III | 50/60 Hz | USA |
| C32 | 492 – 1,342 | EPA Tier 3 / IMO II | 50/60 Hz | USA |
| C32B | 1,193 – 1,417 | EPA Tier 3 / IMO II | 50/60 Hz | USA |
| 3406C | 272 – 298 | IMO II | 50/60 Hz | USA |
| 3512C | 955 – 1,902 | EPA Tier 3 / IMO II | 50/60 Hz | USA |
| 3512E | 1,000 – 1,901 | EPA Tier 4 Final / IMO III | 50/60 Hz | USA |
| 3516C | 1,230 – 2,525 | EPA Tier 3 / IMO II | 50/60 Hz | USA |
| 3516E | 1,865 – 2,525 | EPA Tier 4 Final / IMO III | 50/60 Hz | USA |
| 3516E High Output | 2,000 – 2,960 | EPA Tier 4 Final / IMO III | 50/60 Hz | USA |
| C280-6 | 1,730 – 2,030 | IMO II / IMO III | 50/60 Hz | USA |
| C280-8 | 2,300 – 2,530 | IMO II / IMO III | 50/60 Hz | USA |
| C280-12 | 3,460 – 4,060 | IMO II / IMO III | 50/60 Hz | USA |
| C280-16 | 4,600 – 5,650 | IMO II / IMO III | 50/60 Hz | USA |
Catalogue
| Model | Catalogue |
|---|---|
| C7.1 |
Download Catalogue (PDF) |
| C9.3 |
Download Catalogue (PDF) |
| C12 |
Download Catalogue (PDF) |
| C32 |
Download Catalogue (PDF) |
| 3406C |
Download Catalogue (PDF) |
| 3512C |
Download Catalogue (PDF) |
| 3512E |
Download Catalogue (PDF) |
| 3516C |
Download Catalogue (PDF) |
| 3516E |
Download Catalogue (PDF) |
| C280-6 |
Download Catalogue (PDF) |
| C280-8 |
Download Catalogue (PDF) |
| C280-12 |
Download Catalogue (PDF) |
| C280-16 |
Download Catalogue (PDF) |



















