Proven EGR Technology for Immediate IMO Compliance

Reduce NOx Emissions. Improve Efficiency. Simplify Compliance.

CET Marine delivers proven Exhaust Gas Recirculation (EGR) technology that helps vessel owners reduce NOx emissions, improve environmental performance, and support compliance with IMO regulations—without the complexity, space requirements, or ongoing consumable costs associated with many alternative solutions. 

Designed for commercial marine operations, the CET Marine EGR system is available for both retrofit and newbuild applications and is engineered to integrate with existing vessel infrastructure while minimizing operational disruption.

Compliance Without Operational Compromise

The shipping industry faces increasing pressure to reduce emissions, improve CII performance, and comply with evolving environmental regulations—all while maintaining vessel availability and controlling operating costs. 

Many emission-control technologies require extensive modifications, additional chemical handling, significant installation space, or increased maintenance requirements.

CET Marine takes a different approach. 

Our EGR technology is designed to deliver measurable emissions reductions through a compact, practical, and operationally efficient solution that supports long-term fleet performance.

Why Fleet Owners Are Taking Action

Future Emissions Requirements Are Raising the Performance Standard

A significant portion of the existing global fleet is expected to face increasing regulatory and commercial pressure as environmental requirements continue to tighten. 


Without targeted efficiency improvements or emissions-reduction measures, many vessels risk declining environmental ratings, reduced charter attractiveness, and increased compliance costs. 

For vessel owners operating large fleets, proactive upgrades can help protect asset value, maintain competitiveness, and support long-term regulatory readiness.

The CET Marine EGR Solution

Engineered for Marine Operations

The CET Marine Exhaust Gas Recirculation (EGR) system reduces nitrogen oxide (NOx) emissions by recirculating a controlled volume of treated exhaust gas back into the engine air intake. By lowering combustion temperatures, NOx formation is significantly reduced while maintaining engine performance. Developed specifically for marine applications, the system is designed to integrate with a wide range of engine configurations and vessel types. Key design priorities include:

  • Compact installation footprint
  • Accessibility for routine engine maintenance
  • Continuous emissions monitoring capability
  • Low additional operating costs
  • Integration with fuel-efficiency optimization options
  • Simplified retrofit implementation

How the System Works

Controlled Emissions Reduction Through Exhaust Gas Recirculation

The CET Marine EGR process consists of four core stages:

  1. Controlled extraction of exhaust gas from the engine
  2. Cooling and treatment of the exhaust stream
  3. Continuous monitoring and process control
  4. Recirculation of conditioned gas back to the engine intake

The system automatically adapts to varying engine loads and operating conditions while providing continuous emissions monitoring to support compliance reporting and operational transparency.

Why Choose CET Marine EGR?

Lower Retrofit Costs

A compact system architecture helps reduce installation complexity, minimize shipyard time, and lower overall project costs compared with larger alternative technologies.

No Urea or Ammonia Handling

The system operates without the need for urea, ammonia, or associated storage and handling systems, reducing operational complexity and safety considerations.

Compact Marine Design

Limited space requirements help simplify installation and reduce the need for major vessel modifications.

Low Operating Expenditure

Designed for efficient long-term operation with minimal additional energy consumption and maintenance requirements.

DNV Approval in Principle

The current design basis includes DNV Approval in Principle (AiP), providing independent third-party validation of the concept and supporting further project-specific class approval processes.

Demonstrated Performance

Measured Results From Reference Applications

Up to 80% NOx Reduction

  • Reference installations have demonstrated NOx reductions of approximately 78–80%, depending on engine type, operating profile, and installation configuration.

Fuel Efficiency Benefits

  • Selected applications utilizing CET Marine's Fuel Saving Option have reported fuel-consumption reductions of approximately 11%, contributing to lower operating costs and reduced CO₂ emissions.

Support for Higher IMO Compliance Levels

  • Depending on engine configuration and vessel-specific requirements, the system can support compliance pathways toward higher IMO NOx performance standards.

Reference Applications

Container Feeder Vessel

A 1,000 TEU feeder vessel evaluation demonstrated how EGR technology can provide a practical and cost-effective pathway toward improved emissions performance and regulatory compliance.

RoRo Ferry

Installation on Sulzer main engines achieved substantial NOx reductions while simultaneously delivering fuel-efficiency benefits.

Cruise Vessel

A multi-engine cruise vessel installation achieved approximately 80% NOx reduction and supported compliance with IMO Tier III requirements.

Commercially Available Today

Ready for Retrofit and Newbuild Projects

The CET Marine EGR solution is commercially available and designed for implementation across both existing vessels and newbuild programs. Our engineering team supports the complete project lifecycle, including:

  • Technical feasibility assessment
  • Vessel-specific design adaptation
  • Installation planning
  • Shipyard coordination
  • Class society engagement
  • Commissioning support
  • Acceptance testing

This structured approach helps reduce project risk and streamline implementation from concept through operation.

Let's Discuss Your Fleet

Whether you are evaluating an emissions-reduction strategy, planning a compliance retrofit, or assessing options to improve environmental performance across your fleet, CET Marine can help identify the most effective technical solution for your vessels. 

  • Request a Fleet Assessment
  • Discuss Your Compliance Strategy
  • Speak With Our Engineering Team

Contact: info@cet-marine.com