Vertical Compensator C125-M4

Vertical Compensator Large Bore

The next-generation vibration compensation solution is here

The Vibration Challenge of Future Engines Has Arrived

Larger engine bores, lower operating speeds and evolving fuel strategies are changing the vibration landscape for marine propulsion systems.

As a result, traditional compensator solutions are increasingly challenged by the requirements of modern engine designs.

The Solution

The C-125 M4 vertical compensator combines increased rotating mass, larger diameter construction and intelligent active control to deliver industry-leading excitation performance.

Together, these features provide effective vibration mitigation while protecting critical engine equipment. Furthermore, they give engine designers greater flexibility to optimise engine architecture and performance.

Delivering

Up to 125 kgm / 125 kN excitation force
Exceptional performance at low frequencies
Active phase and force control
Rapid response through dual-drive technology
Adaptability to future engine platforms

Helping engine designers create the next generation of efficient, reliable and vibration-optimized marine engines.

Protect Your Engine. Protect Your Investment.

Modern two-stroke engines are becoming larger and more powerful. Consequently, managing vibration is increasingly important for protecting engine performance and equipment reliability.

The C-125M4 actively counteracts excitation forces before they develop into harmful vibrations. As a result, it helps protect critical engine components, reduce vibration-related wear and improve crew comfort.

Furthermore, the system is designed to support maximum uptime with minimal maintenance requirements. Its simple design reduces operational complexity and supports long-term reliability throughout the vessel’s life cycle.

Key Benefits

Improved longevity of engine-mounted equipment
Protection of valves, coolers, actuators, electronics and piping systems
Reduced wear caused by vibration and structural movements
Increased crew comfort through lower vibration levels
Simple, maintenance-friendly design
No lubrication oil, pumps, filters or gearboxes
Long-term support for future engine technologies

Less Steel. Less Complexity. More Value.

Engine vibrations can increase the need for structural reinforcement, adding weight, complexity and cost to vessel construction.

However, the C-125M4 addresses excitation forces directly at the engine. As a result, it can reduce structural reinforcement requirements and simplify integration into modern vessel designs.

Furthermore, fewer structural modifications can help shipyards optimise material use and streamline construction. This supports more efficient vessel designs without compromising performance or reliability.

Benefits for Shipyards

Lower steel consumption
Reduced structural reinforcement requirements
Elimination of conventional top bracing systems
Easier installation and commissioning
Reduced design and engineering complexity
Improved vessel competitiveness

By addressing vibration challenges directly at the engine, shipyards can deliver optimized vessel designs without compromising performance or reliability.

A smarter foundation for modern vessel construction.

Vertical compensator C-125 M4 new generation — C-125 M4 Launch at SMM 2026

compensator presentation by Kristoffer — C-125 M4 Launch at SMM 2026

FAQ - New Generation Vertical Compensator

Why is a new compensator solution needed?

The latest generation of large two-stroke engines requires significantly higher imbalance forces to counter engine vibrations effectively. As a result, existing compensator solutions are reaching their performance limits and can no longer meet future engine requirements.

What is the C-125M4?

The C-125M4 is a modified version of the proven C-125V3 platform, developed to deliver the higher imbalance forces required by modern main engines. By building on a well-established design, it offers a fast and reliable path to meeting new market demands.

Why choose the C-125M4?

The C-125M4 is a modified version of the proven C-125V3 platform, developed to deliver the higher imbalance forces required by modern main engines. By combining higher compensator performance with a proven technology platform, it provides a reliable and effective solution for controlling engine vibrations and supporting future engine developments.

How does the C-125M4 support future engine developments?

The C-125M4 meets the growing vibration control requirements associated with larger engines, lower operating speeds, and new propulsion concepts, helping engine designers, shipyards, and owners prepare for future challenges.

Does the C-125M4 require more installation space?

Despite delivering significantly higher imbalance forces, the C-125M4 is designed to optimise installation requirements. At the same time, its design simplifies integration into modern engine room layouts.

What are the benefits of the C-125M4

The C-125M4 offers several advantages for modern engine applications. In addition to improved vibration control, it provides the following benefits:

• Supports future large-bore engine requirements.
• Standardizes product architecture across applications.
• Improves performance and reliability
• Simplifies manufacturing and maintenance
• Reduces overall lifecycle costs
• Create opportunities for further design and cost optimizations

What does this mean for shipowners, engine designers and shipyards?

The C-125M4 provides a future-ready solution for increasingly demanding engine designs. Moreover, its improved reliability and reduced complexity contribute to long-term operational value. As a result, shipowners, engine designers and shipyards can meet evolving requirements with greater confidence.