CAT C12 ACERT Marine Engine – Reliable Power for Marine Applications
The CAT C12 ACERT Marine Engine delivers the perfect blend of reliability, fuel efficiency, and smooth performance for a variety of commercial and recreational marine vessels. Built with Caterpillar’s proven ACERT® technology, this engine is engineered to reduce emissions, improve fuel efficiency, and provide dependable propulsion even in the most demanding conditions.
Whether you’re powering a fishing vessel, yacht, or commercial workboat, the CAT C12 ACERT ensures consistent performance and long-term durability, backed by Caterpillar’s world-class support network.
Key Features
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Lower Smoke Emissions: Reduced visible white or black smoke thanks to optimized combustion and a lower compression ratio.
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Improved Throttle Response: Enhanced transient response for smooth acceleration.
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Proven Reliability: Backed by Caterpillar’s standard marine warranty and global dealer support.
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Lower Maintenance Costs: Efficient fuel system and durable components extend service intervals.
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ACERT® Technology: Meets IMO II emission standards while maintaining high power output.
Specifications
| Specification | Details |
|---|---|
| Power Range | 660–705 bhp (492–526 bkW) |
| Engine Speed Range | 2300 rpm |
| Emissions | IMO II |
| Aspiration | Turbocharged (TA) |
| Bore | 5.1 in |
| Stroke | 5.9 in |
| Displacement | 732 in³ |
| Rotation (Flywheel End) | Counterclockwise |
| Configuration | In-line 6, 4-Stroke-Cycle Diesel |
| Width | 38.1 in |
| Dry Weight | 2,588 lbs |
| Length | 62 in |
| Height | 39.5 in |
Applications
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Commercial fishing vessels
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Passenger ferries
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Tugboats and workboats
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Recreational yachts and cruisers
Why Choose the CAT C12 ACERT?
With its lower smoke emissions, excellent fuel economy, and industry-leading durability, the CAT C12 ACERT is a top choice for vessel owners who demand performance and dependability. Caterpillar’s extensive dealer network ensures fast parts availability and expert service anywhere in the world.
Frequently Asked Questions (FAQs)
1. What is the horsepower range of the CAT C12 ACERT Marine Engine?
The engine delivers between 660–705 bhp depending on configuration.
2. Does the CAT C12 ACERT meet environmental standards?
Yes, it meets IMO II emission standards while maintaining high performance.
3. Is Caterpillar’s warranty included?
Yes, the engine comes with Caterpillar’s standard marine warranty for added peace of mind.
4. What type of vessels use the CAT C12 ACERT?
It is used in fishing vessels, yachts, commercial ferries, tugboats, and other workboats.
5. What makes the CAT C12 ACERT different from older C12 models?
The ACERT version features a lower compression ratio and improved fuel and air management for reduced emissions and better throttle response.
CAT C12 ACERT vs. Cummins QSM11 vs. Volvo Penta D13-700 – Marine Diesel Engine Comparison
| Feature / Spec | CAT C12 ACERT | Cummins QSM11 | Volvo Penta D13-700 |
|---|---|---|---|
| Power Range | 660–705 bhp (492–526 bkW) | 580–715 bhp (433–533 bkW) | 700 bhp (515 kW) |
| Engine Speed (Rated) | 2300 rpm | 2300 rpm | 2300 rpm |
| Cylinders / Configuration | In-line 6, 4-stroke | In-line 6, 4-stroke | In-line 6, 4-stroke |
| Displacement | 732 in³ (12.0 L) | 661 in³ (10.8 L) | 780 in³ (12.8 L) |
| Bore x Stroke | 5.1″ x 5.9″ | 4.92″ x 5.79″ | 5.16″ x 6.22″ |
| Aspiration | Turbocharged (TA) | Turbocharged / Aftercooled | Twin Turbocharged |
| Emissions Compliance | IMO II | IMO II / EPA Tier 3 | IMO II / EPA Tier 3 |
| Fuel System | Mechanical with electronic control | High-pressure common rail | Electronic fuel injection, common rail |
| Dry Weight | 2,588 lbs | 2,580 lbs | 2,976 lbs |
| Length | 62 in | 56 in | 68 in |
| Width | 38.1 in | 38 in | 41 in |
| Height | 39.5 in | 44 in | 44 in |
| Cooling System | Heat exchanger | Heat exchanger | Heat exchanger |
| Notable Features | Low smoke emissions, Caterpillar ACERT® tech | High torque at low rpm, proven reliability | Exceptional fuel efficiency, EVC system integration |
Key Takeaways
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CAT C12 ACERT → Balanced power and weight, reduced smoke emissions, Caterpillar’s global service network.
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Cummins QSM11 → Slightly smaller displacement but excellent torque and fuel economy.
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Volvo Penta D13-700 → Larger displacement, modern electronic systems, best for high-end yachts and heavy vessels.
