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FUTURE-READY SOLUTIONS FOR PASSENGERS AND FERRY
CAT® MARINE PROPULSION ENGINES: MORE POWER. HIGHER PERFROMANCE.
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- Power Range
- 1340-2366 bhp (1000-1765 bkW)
- 1340-2366 bhp (1000-1765 bkW)
- Speed Range
- 1600-1800 rpm
- 1600-1800 rpm
- Emissions
- EPA Tier 3, IMO II
- EPA Tier 3, IMO II
3512C HD
The Cat 3512C marine propulsion engine makes your investment work harder. Through a wide range of available power ratings, no required aftertreatment technology, and nominal rated BSFC fuel consumption - it will drive down your total cost of ownership. With a redesigned piston bowl shape to improve combustion, and improved fuel delivery, this engine is IMO II emissions compliant and committed to sustainable environmental development. Single-source support, the Caterpillar warranty, and industry-leading one-year warranty on parts make the 3512C a fully integrated marine power solution
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- Power Range
- 1280-2551 bhp (955-1902 bkW)
- 1280-2551 bhp (955-1902 bkW)
- Speed Range
- 1200 rpm, 1600 rpm, 1800 rpm
- 1200 rpm, 1600 rpm, 1800 rpm
- Emissions
- IMO II, EU IW
- IMO II, EU IW
3512C IMO II
The Cat 3512C marine propulsion engine makes your investment work harder. Through a wide range of available power ratings (including High Displacement ratings), no required aftertreatment technology, and nominal rated BSFC fuel consumption - it will drive down your total cost of ownership. With a redesigned piston bowl shape to improve combustion, and improved fuel delivery, this engine is IMO II emissions compliant and committed to sustainable environmental development. Single-source support, the Caterpillar warranty, and industry-leading one-year warranty on parts make the 3512C a fully integrated marine power solution.
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- Power Range
- 1341-2549 bhp (1000-1901 bkW)
- 1341-2549 bhp (1000-1901 bkW)
- Speed Range
- 1600-1800 rpm
- 1600-1800 rpm
- Emissions
- U.S. EPA Tier 4 Final, IMO III
- U.S. EPA Tier 4 Final, IMO III
3512E Tier 4 / IMO III
The 3512E marine propulsion engine is now available in a wide range of ratings that meet U.S. EPA Tier 4 Final and IMO III marine emissions regulations. As the commercial marine industry adjusts their operations to meet U.S. EPA Tier 4 Final and IMO III emissions standards, Caterpillar Marine has introduced a solution built to maximize performance while meeting regulations. Caterpillar's combination of a fuel-efficiency-optimized engine and a selective catalytic reduction (SCR) aftertreatment system is a solution that not only reduces NOx emissions, but can also lower a customer's owning and operating costs in the process.
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- Power Range
- 1650-3386 bhp (1230-2525 bkW)
- 1650-3386 bhp (1230-2525 bkW)
- Speed Range
- 1200-1800 rpm
- 1200-1800 rpm
- Emissions
- IMO II
- IMO II
3516C IMO II
The 3516C propulsion engine is available with a wide range of ratings that meet IMO II regulations without any additional aftertreatment. These engines provide efficient operation with electronic governing, cold mode start strategy, and programmable low idle to minimize fuel consumption. The 3516C engine also incorporates a closed crankcase ventilation system to lower emissions.
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- Power Range
- 3755-4023 bhp (2800-3000 bkW)
- 3755-4023 bhp (2800-3000 bkW)
- Speed Range
- 1800 rpm
- 1800 rpm
- Emissions
- IMO II
- IMO II
3516E
Building on the durability and reliability of the 3500 engine platform, Caterpillar Marine is pleased to offer an uprated version of the Cat 3516E Marine Propulsion Engine. The high-performance engine delivers 19% more rated power, lower ambient heat rejection, and improved acceleration time. With a focus on serviceability and digitalization, this product provides easier connectivity and installation. It is designed for small engine rooms with its reduction in weight & size and is an ideal solution for Tug, Governmental, and Yachting.
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- Power Range
- 2501-3386 bhp (1865-2525 bkW)
- 2501-3386 bhp (1865-2525 bkW)
- Speed Range
- 1600-1800 rpm
- 1600-1800 rpm
- Emissions
- U.S. EPA Tier 4 Final, IMO III
- U.S. EPA Tier 4 Final, IMO III
3516E Tier 4 / IMO III
The 3516E marine propulsion engine is now available in a wide range of ratings that meet U.S. EPA Tier 4 Final and IMO III marine emissions regulations. As the commercial marine industry adjusts their operations to meet EPA Tier 4 Final and IMO III emissions standards, Caterpillar Marine has introduced a solution built to maximize performance while meeting regulations. Caterpillar's combination of a fuel-efficiency-optimized engine and a selective catalytic reduction (SCR) aftertreatment system is a solution that not only reduces NOx emissions, but can also lower a customer's owning and operating costs in the process.
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- Power Range
- 454-715 bhp (339-533 bkW)
- 454-715 bhp (339-533 bkW)
- Speed Range
- 1800-2100 rpm
- 1800-2100 rpm
- Emissions
- IMO II, EU IIIA
- IMO II, EU IIIA
C18 ACERT IMO II
The C18 ACERT marine propulsion engine has commercial application ratings of 454-715 bhp that meet IMO II & EU Stage IIA emissions regulations, and 469-715 bhp that meet EPA Tier 3, IMO II and EU Stage IIIA emissions regulations. In addition to the benefits the C18 ACERT's advanced marine engine technology brings, you welcome aboard legendary Cat product support. No matter where your spirit of adventure takes you, rest assured the Cat Dealer Network is close by.
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- Power Range
- 469-1001 bhp (350-747 bkW)
- 469-1001 bhp (350-747 bkW)
- Speed Range
- 1800-2300 rpm
- 1800-2300 rpm
- Emissions
- EPA Tier 3 Commercial, IMO II, EU IW
- EPA Tier 3 Commercial, IMO II, EU IW
C18 ACERT Tier 3
The C18 ACERT marine propulsion engine has commercial application ratings of 475-725 mhp (469-715 bhp) at 1800-2100 rpm that meet U.S. EPA Tier 3, IMO II, and EU IW emissions regulations. In addition to meeting the stricter EPA Tier 3 emissions, this engine now offers a fresh water aftercooled option for the commercial propulsion and auxiliary engines and genset packages. From fishing to offshore and everything in between, you can be confident that we have the solution to fit your needs.
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- Power Range
- 4640-5444 bhp (3460-4060 bkW)
- 4640-5444 bhp (3460-4060 bkW)
- Speed Range
- 900-1000 rpm
- 900-1000 rpm
- Emissions
- IMO II, IMO III/EPA T4
- IMO II, IMO III/EPA T4
C280-12
Building on the durability and reliability of the C280 engine platform, Caterpillar is pleased to offer the C280-12 engine line. The core components are the same as the existing C280, including the latest in EUI fuel system capabilities and state-of-the-art ADEM™ A3 Electronic Control Unit (ECU) features. Caterpillar® products continue to deliver more available power while delivering outstanding fuel efficiency. You can also count on long maintenance intervals and worldwide Caterpillar parts and service availability.All C280-12 engines ratings are IMO II compliant. Engines rated at 3700 bkW and 4060 bkW, with aftertreatment, are IMO 3/EPA T4 compliant.
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- Power Range
- 4640-6035 bhp (3460-4500 bkW)
- 4640-6035 bhp (3460-4500 bkW)
- Speed Range
- 900 / 1,000 rpm
- 900 / 1,000 rpm
- Emissions
- IMO II U.S. EPA Tier 4, IMO III (Cat SCR required)
- IMO II U.S. EPA Tier 4, IMO III (Cat SCR required)
C280-12
A leader in the high performance medium speed engine market, the C280 is now available with 4500bkW and 6000bkW ratings to provide even greater power density in your weight critical applications. New performance iron for improved combustion efficiency and lower visible smoke, as well as a redesigned hard heat shield system are standard on all ratings. With 30 years of proven performance and durability, the C280 is the right solution for both newbuild and repower opportunities, particularly in Governmental and Ferry applications.
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- Power Range
- 4640-5096 bhp (3460-3800 bkW)
- 4640-5096 bhp (3460-3800 bkW)
- Speed Range
- 900 rpm
- 900 rpm
- Emissions
- IMO II
- IMO II
C280-12
Building on the durability and reliability of the C280 engine platform, Caterpillar is pleased to offer the IMO II compliant C280 engine line. The core components are the same as the existing C280, including the latest in EUI fuel system capabilities and state-of-the-art ADEM™ A3 Electronic Control Unit (ECU) features. Caterpillar® products continue to deliver more available power while delivering outstanding fuel efficiency. You can also count on long maintenance intervals and worldwide Caterpillar parts and service availability.
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- Power Range
- 6169-8046 bhp (4600-6000 bkW)
- 6169-8046 bhp (4600-6000 bkW)
- Speed Range
- 900-1000 rpm
- 900-1000 rpm
- Emissions
- IMO II
- IMO II
C280-16
Building on the durability and reliability of the C280 engine platform, Caterpillar is pleased to offer the C280-16 engine line, now up to 6000 bkW. The core components are the same as the existing C280, including the latest in EUI fuel system capabilities and state-of-the-art ADEM™ A3 Electronic Control Unit (ECU) features. Caterpillar® products continue to deliver more available power while delivering outstanding fuel efficiency. You can also count on long maintenance intervals and worldwide Caterpillar parts and service availability.
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- Power Range
- 2320-2722 bhp (1730-2030 bkW)
- 2320-2722 bhp (1730-2030 bkW)
- Speed Range
- 900-1000 rpm
- 900-1000 rpm
- Emissions
- IMO II
- IMO II
C280-6
Building on the durability and reliability of the C280 engine platform, Caterpillar is pleased to offer the IMO II C280 engine line. The core components are the same as the existing C280, including the latest in EUI fuel system capabilities and state-of-the-art ADEM™ A3 Electronic Control Unit (ECU) features. Caterpillar® products continue to deliver more available power while delivering outstanding fuel efficiency. You can also count on long maintenance intervals and worldwide Caterpillar parts and service availability.
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- Power Range
- 3084-4023 bhp (2300-3000 bkW)
- 3084-4023 bhp (2300-3000 bkW)
- Speed Range
- 900 - 1000 rpm
- 900 - 1000 rpm
- Emissions
- IMO II, IMO III/EPA Tier 4
- IMO II, IMO III/EPA Tier 4
C280-8
Building on the durability and reliability of the C280 engine platform, Caterpillar is pleased to offer the C280-8 engine line. The core components are the same as the existing C280, including the latest in EUI fuel system capabilities and state-of-the-art ADEM™ A3 Electronic Control Unit (ECU) features. Caterpillar® products continue to deliver more available power while delivering outstanding fuel efficiency. You can also count on long maintenance intervals and worldwide Caterpillar parts and service availability.All C280-8 engines ratings are IMO II compliant. Engines rated at 2460 bkW and 2710 bkW, with aftertreatment, are IMO III/EPA Tier 4 compliant.
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- Power Range
- 1600-1900 bhp (1193-1417 bkW)
- 1600-1900 bhp (1193-1417 bkW)
- Speed Range
- 2300 rpm
- 2300 rpm
- Emissions
- IMO II, U.S. EPA Tier 3 Recreational, RCD, China Stage II
- IMO II, U.S. EPA Tier 3 Recreational, RCD, China Stage II
C32
C32 propulsion engine ratings of 1925 mhp (1900 bhp) 1417 bkW, 1825 mhp (1800 bhp) 1342 bkW, and 1622 mhp (1600 bhp) 1193 bkW are available with heat exchanger cooling. These ratings are compliant for U.S. EPA Tier 3 Recreational, EU Stage IIIA, and IMO II. The 1600 and 1800 bhp ratings are also meet US EPA Tier 3 Commercial Standards. The engine configuration includes an air cleaner and CCV system as well as jacket water aftercooling. Additional features include a “plug-in PTO”, an MECP I control panel, and hybrid fuel lines. The MECP I panel has a monochrome display for engine parameters, external outputs for customer installed visible and audible alarms, Start/Stop buttons, and an Off/Local/Remote switch.
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- Power Range
- 750-1800 bhp (559-1342 bkW)
- 750-1800 bhp (559-1342 bkW)
- Speed Range
- 1600-2300 rpm
- 1600-2300 rpm
- Emissions
- EPA Tier 3, IMO II, EU IW
- EPA Tier 3, IMO II, EU IW
C32 ACERT Tier 3
The C32 ACERT marine propulsion engine is available at ratings that meet both EPA Tier 3 and IMO II emissions regulations. It has a separate circuit aftercooling system (SCAC) for A through C ratings and a seawater aftercooling system (SWAC) for D and E ratings. The C32 ACERT has seven ratings with Wide Operating Speed Range (WOSR) and extended oil change intervals. Other benefits include proven engine operating history and performance iron with thousands of validation testing hours for quality and durability. The C32 ACERT marine engine is supported by the extensive Cat global dealer network and standard warranty.
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- Power Range
- 660-1450 bhp (492-1081 bkW)
- 660-1450 bhp (492-1081 bkW)
- Speed Range
- 1600-2300 rpm
- 1600-2300 rpm
- Emissions
- IMO II, EU IW
- IMO II, EU IW
C32 IMO II
The C32 marine propulsion engine is available at ratings that meet IMO II emissions regulations. It has a separate circuit aftercooling system (SCAC) for A through C ratings, six ratings with Wide Operating Speed Range (WOSR) and extended oil change intervals. Other benefits include proven engine operating history and performance iron with thousands of validation testing hours for quality and durability. The C32 marine engine is supported by the extensive Cat global dealer network and Caterpillar's standard warranty.
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- Power Range
- 660-1600 bhp (492-1193 bkW)
- 660-1600 bhp (492-1193 bkW)
- Speed Range
- 1600-2300 rpm
- 1600-2300 rpm
- Emissions
- U.S. EPA Tier 3 / IMO II emissions certified
- U.S. EPA Tier 3 / IMO II emissions certified
C32 Tier 3 / IMO II
Cat C32 Propulsion Engine (US EPA Tier 3 / IMO II)
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- 6 Brick Z-Flow - Length
- 147.7 in
- 3751 mm
- Power Range
- 1000-1450 bhp (746-1081 bKW)
- 1000-1450 bhp (746-1081 bKW)
- Minimum Length
- 83.9 in
- 2130 mm
C32 Tier 4 / IMO III
Cat C32 Propulsion Engine (US EPA Tier 4 / IMO III)
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- Power Range
- 2000 bhp (1491 bkW)
- 2000 bhp (1491 bkW)
- Speed Range
- 2300 rpm
- 2300 rpm
- Emissions
- IMO II, U.S. EPA Tier 3 Recreational, RCD, China Stage II
- IMO II, U.S. EPA Tier 3 Recreational, RCD, China Stage II
C32B
All new from the block up and built on the proven C32 platform, the C32B marine engine delivers more power, more speed, more time on the water and more peace of mind. All that comes in a quieter package with only a 2% increase in weight compared to the previous model — making the C32B the right choice for new builds and repowers. Rated at 2025 mhp (2000 bhp) / 1491 bkW @ 2300 rpm, the C32B meets U.S. EPA Marine Tier 3 and IMO II emissions standards. With an E Tier rating, it can run at the full 2000hp up to 8% of the time.
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- Power Range
- 1800-2400 bhp (1342-1790 bkW)
- 1800-2400 bhp (1342-1790 bkW)
- Speed Range
- 2300 rpm
- 2300 rpm
- Emissions
- IMO II/III, U.S. EPA Tier 3 (recreational), RCD, China II
- IMO II/III, U.S. EPA Tier 3 (recreational), RCD, China II
C32B
With the introduction of the C32B product line in 2021, Caterpillar Marine now confirms the availability of the uprated Cat® C32B Marine Propulsion engine in 2025 mhp and 2433 mhp offerings. With 25% more peak power and high performance, this engine demonstrates great performance and efficiency, while also delivering noise reduction at lower engine speeds. This product meets IMO II and U.S. EPA Tier 3 (recreational) emissions standards and is perfectly suited for yachting applications. Governmental applications can also be a great fit for D-tier ratings. Please consult with your Cat Marine dealer regarding the use of E-tier ratings.
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CAT® MARINE GENERATORS: QUALITY. RELIABILITY.
PRODUCT SUPPORT
We provide world-class product support at Caterpillar and sell quality marine engines and power solutions. No matter where your vessels operate, you can count on our dealers' expertise to keep your machine running productively and profitably. Find what you need to ensure your ship operates at peak performance.
DIGITAL SERVICES
Cat® Marine Digital Services enables you to improve the most critical aspects of your operations.
Success Stories
What Ferry Operators are Saying About Caterpillar
