Rated Power: 209 HP @ 2300 RPM
Engine Type：I-6, 4-Stroke-Cycle-Diesel
Aspiration: Turbocharged-Aftercooled
Bore x Strock: 105 mm x 135 mm
Emission Standard: IMO II
CAT Marine Main Engine
Marine Main Engine is the power system for marine commercial propulsion engines. Caterpillar Marine Main Engine has C7.1, C8.7, C9.3, C18, C32, C175, C280, 3512, 3516C (all series names are written here), the engine power range is from 209 kVA to 5650 kVA.
All marine main engine engines comply with international emission standards, providing stable power supply for various types of ships such as work boats, tugboats, yachts, patrol boats, fire boats, etc. Carter marine power products are designed with great emphasis on reliability, stability and safety, etc. Performance, in line with international strict classification society certification standards, such as EPA, IMO, etc.
Caterpillar Marine Main Engine Performance, long-term durability, high fuel efficiency, simplified maintenance, and long overhaul intervals, Cat® Marine Engines deliver maximum productivity with minimal outlay.
For more details on our products and services, please contact the EMAC (Official Caterpillar Export Agent) sales and service team.
Advantages of Marine Main Engine
A 10 percent overload capability is available for a period of one hour within a 12 hour period of operation. Total operating time at the 10 percent overload power shall not exceed 25 hours per year. This power rating conforms to ISO 8528 guidelines.
Based on DCEC marine engines, Seamac provides fully integrated support at all stages of a new build or repower project, from vessel concept to installation, commissioning and sea trial. We work closely with partner suppliers, including gear manufacturers and system integrators to ensure proper engine selection, application and installation. Seamac, your reliable one-stop marine propulsion and power system solution provider.
Find Marine Main Engines by Series
This is the list of all series of CAT marine main engines.
C7.1
Rated Power: 261 HP @ 2500 RPM Rated Power: 298 HP @ 2600 RPM Rated Power: 317 HP @ 2700 RPM Caterpillar C7.1-ME350 Marine Main Engine
Engine Type: I-6, 4-Troke-Cycle-Diesel
Bore x Strock: 105 mm x 135 mm
Aspiration: Turbocharged-Aftercooled
Emission Standard: IMO II Caterpillar C7.1-ME400 Marine Main Engine
Engine Type: I-6, 4-Troke-Cycle-Diesel
Bore x Strock: 105 mm x 135 mm
Aspiration: Turbocharged-Aftercooled
Emission Standard: IMO II Caterpillar C7.1-ME425 Marine Main Engine
Engine Type: I-6, 4-Troke-Cycle-Diesel
Bore x Strock: 105 mm x 135 mm
Aspiration: Turbocharged-Aftercooled
Emission Standard: IMO II
C8.7
Against the backdrop of the booming development of the global shipping and maritime industry, Vietnam International Maritime Expo 2025 (Marine & Offshore Vietnam) will be held in Ho Chi Minh City, Vietnam from 19th to 21st November. As one of the most influential maritime events in Southeast Asia, this exhibition brings together top enterprises and innovations in the fields of global shipbuilding, offshore engineering, port equipment, new energy ship technology, etc., and provides an international platform for industry colleagues to exchange and co-operate and explore the market. The International Exhibition of Engineering Machinery, Mining, and Concrete (Mining Indonesia) will be held in Jakarta, Indonesia, from September 17 to 20, 2025. As one of the most influential mining exhibitions in Southeast Asia, Mining Indonesia provides a professional platform for enterprises, experts, and practitioners in the global mining sector to showcase cutting-edge technologies, exchange industry insights, and explore collaborative opportunities. From August 28 to 31, 2025, the highly anticipated biennial Russian International Railway and Rail Transit Exhibition (PRO/Motion Expo) will be held in St. Petersburg. The exhibition is the largest and most professional railway and transportation exhibition in Eastern Europe and Central Asia. PRO/Motion Expo brings together industry elites, corporate representatives and professional visitors from all over the world to witness the latest development achievements and cutting-edge trends in the railway and rail transit industry. Here, many internationally renowned companies will showcase their latest technologies, products and solutions, covering railway infrastructure construction, train manufacturing, communication and signal systems, intelligent transportation and other fields. From advanced train design and manufacturing technology to efficient railway operation and management solutions; from innovative rail material research and development to intelligent railway communication and control systems, various cutting-edge technologies and innovative achievements will be presented one by one, bringing a wonderful industry feast to the participants. From September 22 to 25, 2026, the highly anticipated biennial Berlin International Railway and Rail Transit Exhibition (InnoTrans Berlin) opened grandly in Berlin, Germany. As the largest and most influential event in the global railway and rail transit field, InnoTrans Berlin brings together industry elites, corporate representatives and professional visitors from all over the world to witness the latest development achievements and cutting-edge trends in the railway and rail transit industry. The exhibition covers a number of key areas such as bridges and tunnels, public transportation, and comprehensively displays innovative technologies, advanced equipment and comprehensive solutions in the railway and rail transit industry. From infrastructure construction to operation management, from vehicle manufacturing to intelligent system applications, the exhibition content is rich and diverse, providing participants inside and outside the industry with an excellent platform for a comprehensive understanding of industry dynamics, exchanges and cooperation. The highly anticipated Middle East Saudi International Railway and National Road Transportation Exhibition (SAUDI RAIL) will be grandly opened in Riyadh, the capital of Saudi Arabia, from October 19 to 20, 2025. As an annual event in the field of rail transportation in the region, this exhibition focuses on Saudi Arabia’s grand blueprint for rebuilding the future new city. With its strong industry influence and extensive market radiation, it has attracted many industry elites and enterprises to participate actively. The market heat continues to rise, showing a booming development trend. From June 18 to 20, 2025, the highly anticipated 2025 Turkey Railway, Rolling Stock and Logistics Exhibition (Eurasia Rail Turkey) opened grandly at the Istanbul Expo Center (IFM). As one of the most influential industry events in the railway and rail transit fields in the Middle East, Africa and Europe, this exhibition attracted many outstanding companies from the global rail transit, rolling stock and logistics technology fields to participate in the exhibition. During the three-day exhibition, the exhibitors concentrated on displaying the industry’s cutting-edge technologies and innovative achievements, building an efficient technical exchange and business cooperation platform for international professionals, and providing an important opportunity to promote the development of the global rail transit industry. The 2025 Kazakhstan International Mining, Exploration and Coal Processing Exhibition (Mining Week) is set to take place grandly in Karaganda, Kazakhstan, from June 24 to 26. As one of the most influential mining exhibitions in Central Asia, Mining Week provides a professional platform for enterprises, experts, and practitioners in the global mining sector to highlight innovative technologies, exchange industry experiences, and explore cooperation opportunities.SinoGen Power Technology Limited (SinoMac) will participate in this mining event with its mining division, MineMac, bringing an elevated level of enthusiasm and firm determination. Against the backdrop of the vigorous development of the rail transit industry, the 2025 Turkey Railway and Rail Transit Exhibition will open its curtains in Istanbul, Turkey from June 18 to 20. As a much – anticipated industry event, this exhibition offers a broad platform for global rail transit companies to showcase their innovative achievements and expand market opportunities, covering various aspects of the rail transit field, including railways, subways, light rails, trams, locomotives, vehicles, signaling and communication systems, and maintenance and repair equipment. On the first day of the North American exhibition (CONEXPO CON/AGG) on March 14, Cummins made its debut with the Accelera zero-carbon brand, reaffirming that “zero emission” is the top priority of Cummins’ development, and promised to achieve the goal of zero carbon by 2050 EMAC’s customer interview video of 2024, EMAC finished a series of customer interview with 10 different business partners from different countries and regions, most of videos are took at customer’s company and factory, collecting all reviews and evaluations of EMAC, covering different industries in different country and regions, we believe this series of EMAC customer interview videos can help all of other customers get to know more about EMAC, our true customer interview case can greatly help customers relieve their worries, and build their confidence to cooperate with EMAC. EMAC’s customer interview video of 2025, EMAC finished a series of customer interview with 10 different business partners from different countries and regions, most of videos are took at customer’s company and factory, collecting all reviews and evaluations of EMAC, covering different industries in different country and regions, we believe this series of EMAC customer interview videos can help all of other customers get to know more about EMAC, our true customer interview case can greatly help customers relieve their worries, and build their confidence to cooperate with EMAC. EMAC’s customer interview video of 2023, EMAC finished a series of customer interview with 10 different business partners from different countries and regions, most of videos are took at customer’s company and factory, collecting all reviews and evaluations of EMAC, covering different industries in different country and regions, we believe this series of EMAC customer interview videos can help all of other customers get to know more about EMAC, our true customer interview case can greatly help customers relieve their worries, and build their confidence to cooperate with EMAC. EMAC’s customer interview video of 2023, EMAC finished a series of customer interview with 10 different business partners from different countries and regions, most of videos are took at customer’s company and factory, collecting all reviews and evaluations of EMAC, covering different industries in different country and regions, we believe this series of EMAC customer interview videos can help all of other customers get to know more about EMAC, our true customer interview case can greatly help customers relieve their worries, and build their confidence to cooperate with EMAC. CAT Well Service The Well Service engine is the... CAT Offshore The Offshore engine is the power... CAT Land Production Engine The Land Production... CAT Land Driling Engine The Land Driling engine... Caterpillar 3516 Railway Engine To meet your... Caterpillar 3512 Railway Engine To meet your... Caterpillar 3508 Railway Engine To meet your... Caterpillar C175 Railway Engine Optimized design... 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EMAC’s customer interview video of 2023, EMAC finished a series of customer interview with 10 different business partners from different countries and regions, most of videos are took at customer’s company and factory, collecting all reviews and evaluations of EMAC, covering different industries in different country and regions, we believe this series of EMAC customer interview CAT 3516 Pump Drive Engine Series The... CAT 3512 Pump Drive Engine Series The... Caterpillar 3508 Pump Drive Engine The... Caterpillar 3412 Pump Drive Engine The... Caterpillar 3406 Pump Drive Engine Series The... Caterpillar C18 Pump Drive Engine Series The... Caterpillar 3516 Industrial Engine Caterpillar... Caterpillar 3512 Industrial Engine Caterpillar... Caterpillar 3508 Industrial Engine Caterpillar... Caterpillar C32 Industrial Engine Caterpillar 32... Caterpillar C27 Industrial Engine Caterpillar 27... Caterpillar C18 Industrial Engine Caterpillar 18... 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Focus on marine industry event, start a new chapter of marine development together–SinoGen Power Technology Limited to exhibit at Marine & Offshore Vietnam 2025
SinoGen Power Technology Limited made its debut at the 2025 Indonesia International Construction Machinery, Mining and Concrete Exhibition
2025 Russian International Railway and Rail Transit Exhibition: SinoGen invites you to join the industry feast
Sinogen actively participated in the International Railway and Rail Transit Exhibition in Berlin, Germany, to explore the new future of the industry
SinoGen Company participated in the Saudi International Railway and National Highway Transportation Exhibition to explore new opportunities in the industry
SinoMac-SinoGen Makes a Brilliant Appearance at Eurasia Rail Turkey 2025
2025 Kazakhstan International Mining
Focus on the rail transit event and share the industry development
Zero-carbon Brand Makes its Debut in North America
Vietnam | Pump – Electric Motor
A Promise is A Promise, EMAC always do what we say, and for customer’s feedback, also 100% original from clients’s real words. EMAC, a Chinese company that you can trust!
Indonesia | Construction – Customer Interview
A Promise is A Promise, EMAC always do what we say, and for customer’s feedback, also 100% original from clients’s real words. EMAC, a Chinese company that you can trust!
Thailand | Pump – Equipment Production
A Promise is A Promise, EMAC always do what we say, and for customer’s feedback, also 100% original from clients’s real words. EMAC, a Chinese company that you can trust!
Malaysia | Construction – Ground Support Equipment
A Promise is A Promise, EMAC always do what we say, and for customer’s feedback, also 100% original from clients’s real words. EMAC, a Chinese company that you can trust!
Well Service | 153 – 2461 kW
Offshore | 1257 – 2418 kW
Land Production | 168 – 709 kW
Land Driling | 328 – 1383 kW
3516 | 1011 – 1492 kW
3512 | 761 – 1119 kW
3508 | 507 – 746 kW
C175
C27
C18
C15 | 328 – 444 kW
Gas Compressor | 205 – 2823 kW
Fire Pump Engine | 455 – 597 kW
Explosion Proof Engine | 400 – 828 kW
Indonesia | Marine – Indonesia Shipyard Interview
Thailand | Pump – Thailand Engineering Company Interview
3516 | 1480 kW
3512 | 1193 kW
3508 | 746 kW
3412 | 551 kW
3406 | 359 kW
C18 | 597 kW
3516 | 2000 HP
3512 | 1500 HP
3508 | 1000 HP
C32 | 1350 HP
C27 | 1150 HP
C18 | 800 HP
C15 | 595 HP
C13 | 520 HP
C9.3 | 416 HP
C7.1 | 217 – 275 HP
C7 | 255 HP
C4.4 | 83 – 111 HP
C2.2 | 66 HP
3516 | 2368 HP
3512 | 1424 – 1789 HP
C280 | 2530 – 3800 HP
C32 | 874 HP
C18 | 301 – 492 HP
C9.3 | 218 – 270 HP
C7.1 | 209 HP
C4.4 | 71 – 108 HP
3516C | 1230 – 2525 HP
3512 | 1044 – 1901 HP
C280 | 2214 – 2710 HP
C175 | 2428 – 2550 HP
C9.3
Rated Power: 280 HP @ 1800 RPM Rated Power: 310 HP @ 2100 RPM Rated Power: 355 HP @ 2300 RPM
Caterpillar C9.3-ME375 Marine Main Engine
Engine Type: I-6, 4-Stroke-Cycle-Diesel
Bore x Strock: 115 mm x 149 mm
Aspiration: Turbocharged-Aftercooled
Emission Standard: IMO II
Caterpillar C9.3-ME416 Marine Main Engine
Engine Type: I-6, 4-Stroke-Cycle-Diesel
Bore x Strock: 115 mm x 149 mm
Aspiration: Turbocharged-Aftercooled
Emission Standard: IMO II Caterpillar C9.3-ME476 Marine Main Engine
Engine Type: I-6, 4-Stroke-Cycle-Diesel
Bore x Strock: 115 mm x 149 mm
Aspiration: Turbocharged-Aftercooled
Emission Standard: IMO II
C18
Rated Power: 339 HP @ 1800 RPM Rated Power: 357 HP @ 1800 RPM Rated Power: 448 HP @ 1800 RPM
Caterpillar C18-454 Marine Main Engine
Engine Type: I-6, 4-Troke-Cycle-Diesel
Bore x Strock: 145 mm x 183 mm
Aspiration:TC & aftercooled aspiration
Emission Standard: IMO II Caterpillar C18-479 Marine Main Engine
Engine Type: I-6, 4-Troke-Cycle-Diesel
Bore x Strock: 145 mm x 183 mm
Aspiration:TC & aftercooled aspiration
Emission Standard: IMO II Caterpillar C18-600 Marine Main Engine
Engine Type: I-6, 4-Troke-Cycle-Diesel
Bore x Strock: 145 mm x 183 mm
Aspiration:TC & aftercooled aspiration
Emission Standard: IMO II
C32
Rated Power: 492 HP @ 1800 RPM Rated Power: 559 HP @ 1800 RPM Rated Power: 634 HP @ 1800 RPM Rated Power: 746 HP @ 1800 RPM Rated Power: 634 bkW @ 1800 RPM
Caterpillar C32-660 Marine Main Engine
Engine Type:Vee 12,4-Stroke-Cycle Diesel
Bore x Strock: 145 mm x 162 mm
Aspiration:TC & Aftercooled Aspiration
Emission Standard: IMO II Caterpillar C32-750 Marine Main Engine
Engine Type:Vee 12,4-Stroke-Cycle Diesel
Bore x Strock: 145 mm x 162 mm
Aspiration:TC & Aftercooled Aspiration
Emission Standard: IMO II Caterpillar C32-850 Marine Main Engine
Engine Type:Vee 12,4-Stroke-Cycle Diesel
Bore x Strock: 145 mm x 162 mm
Aspiration:TC & Aftercooled Aspiration
Emission Standard: IMO II Caterpillar C32-1000 Marine Main Engine
Engine Type:Vee 12,4-Stroke-Cycle Diesel
Bore x Strock: 145 mm x 162 mm
Aspiration:TC & Aftercooled Aspiration
Emission Standard: IMO III Caterpillar C32-1000-1 Marine Main Engine
Engine Type:Vee 12,4-Stroke-Cycle Diesel
Bore x Strock: 145 mm x 162 mm
Aspiration:TC & Aftercooled Aspiration
Emission Standard: IMO Ⅲ
C175
Rated Power: 2428 HP @ 1800 RPM Rated Power: 2239 HP @ 1800 RPM Rated Power: 2550 HP @ 1800 RPM
C175-16-3302 Marine Main Engine
Engine Type:Vee 16,4-Stroke-Cycle Diesel
Bore x Strock: 175 mm x 220 mm
Aspiration:TC & Aftercooled Aspiration
Emission Standard: IMO II C175-16-3045 Marine Main Engine
Engine Type:Vee 16,4-Stroke-Cycle Diesel
Bore x Strock: 175 mm x 220 mm
Aspiration:TC & Aftercooled Aspiration
Emission Standard: IMO II C175-16-3468 Marine Main Engine
Engine Type:Vee 16,4-Stroke-Cycle Diesel
Bore x Strock: 175 mm x 220 mm
Aspiration:TC & Aftercooled Aspiration
Emission Standard: IMO II
C280
Rated Power: 2460 bkW @ 1000 RPM Rated Power: 2710 bkW @ 1000 RPM Rated Power: 3700 bkW @ 1000 RPM Rated Power: 4060 bkW @ 1000 RPM
Caterpillar C280-8-3299 Marine Main Engine
Engine Type:Vee 8,4-Stroke-Cycle Diesel
Bore x Strock: 280 mm x 300 mm
Aspiration:TC & Aftercooled Aspiration
Emission Standard: IMO II Caterpillar C280-8-3634 Marine Main Engine
Engine Type:Vee 8,4-Stroke-Cycle Diesel
Bore x Strock: 280 mm x 300 mm
Aspiration:TC & Aftercooled Aspiration
Emission Standard: IMO II
C280-12-4962 Marine Main Engine
Engine Type:Vee 8,4-Stroke-Cycle Diesel
Bore x Strock: 280 mm x 300 mm
Aspiration:TC & Aftercooled Aspiration
Emission Standard: IMO II C280-12-5444 Marine Main Engine
Engine Type:Vee 8,4-Stroke-Cycle Diesel
Bore x Strock: 280 mm x 300 mm
Aspiration:TC & Aftercooled Aspiration
Emission Standard: IMO II
3512
Rated Power:1044 HP 1600 @ RPM Rated Power: 1118 HP 1600 @ RPM Rated Power:1118 HP 1600 @ RPM Rated Power:1901 HP 1800 @ RPM
3512C-SS-ME1400 Marine Main Engine
Engine Type :V-12, 4-Stroke-Cycle-Diesel
Bore x Strock :170.0 mm * 190.0 mm
Displacement :51.8 L (3161 cu in)
Emission Standard : IMO II 3512C-SS-ME1500 Marine Main Engine
Engine Type：V-12, 4-Stroke-Cycle-Diesel
Bore x Strock：170.0 mm * 190.0 mm
Displacement ：51.8 L (3161 cu in)
Emission Standard: IMO II 3512C-SS-ME1600 Marine Main Engine
Engine Type:V-12, 4-Stroke-Cycle-Diesel
Bore x Strock:170.0 mm * 190.0 mm
Displacement:51.8 L(3161 cu in)
Emission Standard: IMO II Caterpillar 3512E Marine Main Engine
Engine Type:V-12, 4-Stroke-Cycle-Diesel
Bore x Strock:170 mm * 215 mm
Displacement:58.6 L / 3574 cu in
Emission Standard: IMO II-III
3516C
Rated Power: 1230 HP 1200 @ RPM Rated Power: 1305 HP 1200 @ RPM Rated Power : 1379 HP 1200 @ RPM Rated Power: 2525 HP 1800 @ RPM
3516C-SS-ME1650 Marine Main Engine
Engine Type：V-16, 4-Stroke-Cycle-Diesel
Bore x Strock：170.0 mm * 190.0 mm
Displacement ：69 L (4211 cu. in.)
Emission Standard ：IMO II 3516C-SS-ME1750 Marine Main Engine
Engine Type：V-16, 4-Stroke-Cycle-Diesel
Bore x Strock：170.0 mm * 190.0 mm
Displacement ：69 L (4211 cu. in.)
Emission Standard ：IMO II 3516C-SS-ME1850 Marine Main Engine
Engine Type : V-16,4-Stroke-Cycle-Diesel
Bore x Strock : 170 mm * 190 mm
Displacement : 69 L (567 in³)
Emission Standard : IMO II Caterpillar 3516E Marine Main Engine
Engine Type：V-16, 4-Stroke-Cycle-Diesel
Bore x Strock：170.0 mm * 190.0 mm
Displacement ：69 L (4211 cu. in.)
Emission Standard ：IMO III
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