CAT C12 ACERT Marine Engine

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

Lower Smoke Emissions: Reduced visible white or black smoke thanks to optimized combustion and a lower compression ratio.

Improved Throttle Response: Enhanced transient response for smooth acceleration.

Proven Reliability: Backed by Caterpillar’s standard marine warranty and global dealer support.

Lower Maintenance Costs: Efficient fuel system and durable components extend service intervals.

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

Commercial fishing vessels

Passenger ferries

Tugboats and workboats

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

CAT C12 ACERT → Balanced power and weight, reduced smoke emissions, Caterpillar’s global service network.

Cummins QSM11 → Slightly smaller displacement but excellent torque and fuel economy.

Volvo Penta D13-700 → Larger displacement, modern electronic systems, best for high-end yachts and heavy vessels.