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Every mission is different

Asymmetric threats such as piracy and military confrontations in critical trade areas have increased sharply – threatening global maritime trade. The defense and protection of maritime borders requires the full operational readiness of the fleet. Ships deployed for defense purposes must therefore cover a broad and complex range of tasks. This means high requirements for the crew and machinery.

The engines on board naval vessels must meet the highest standards – reliability and performance for use on the open sea are of enormous importance. Ship performance can make the difference between mission success and failure, so reliable and flexible engines are needed. The new generation of our MAN Marine high-speed series 175D-ML"+" stands for even more power, even more reliability, safety and compactness. Safety is the be-all and end-all of any mission. The crew on board patrol, war or amphibious and support vessels are dependent on the reliability of the engines. Critical operations are often a matter of minutes, quick response and maneuverability. The engines not only have to deliver the required power – they set the pace for the respective mission. The powerful diesel engine MAN 175D-ML"+" is a guarantee for successful operations thanks to its ease of operation, uncomplicated maintenance and high reliability.

More safety, more power

Whether for fast patrol boats, large support vessels, offshore patrol vessels, or full-fledged naval combat ships, MAN Energy Solutions offers marine propulsion systems that are perfectly tailored to every type of ship. With a wide range of highly efficient, reliable and robust engines that meet the latest requirements for shock capability, lowest noise level and power density, we have the perfect solutions for complex requirements. For example, operation must be feasible both in patrol mode and during sprints at maximum speed. No problem for the new high-performance MAN 20V175D-ML"+" engine – with an output of up to 4400 kW, it is predestined for a wide variety of tasks on the high seas. Today's engines are constantly evolving – each new innovation presents a new challenge. Control systems therefore play a crucial role in getting the best possible performance out of the engine. SaCoSone (Safety and Control System on engine) from MAN Energy Solutions does just that, withstanding even the toughest operating conditions. The MAN SaCoSone safety and control system ensures safe monitoring, control and operation of the engine – it increases the efficiency and operational safety of the engine through multiple and comprehensive functions that affect every important component and activity of the engine.

In addition to focusing on performance and safety, MAN Energy Solutions is committed to steadily reducing the environmental impact of our engines. Thanks to integrated SCR (selective catalytic reduction) technology, the nitrogen oxide (NOX) emissions produced during the combustion process in the diesel engine are subsequently converted into elemental nitrogen (N₂) and water (H₂O) in a catalytic converter. This significantly reduces nitrogen oxide (NOX) emissions in the exhaust gas.

MAN 175D

The MAN 175D high-speed solutions combine reliable performance with unparalleled compactness – maximum fuel efficiency with the lowest possible emissions makes these products a safe investment for the future.

Learn more about the 175D


Output of up to 4,400 kW

Ready for any mission

Have a deep dive into the special requirements for engines in the naval defense segment and the MAN 175D. 

We talked to two MAN Energy Solutions employees: Ruben Fernandez and Pierpaolo Da Fieno shared their knowledge of broad and the complex range of tasks modern vessels have to fulfil in the defense industry – and how the new MAN 175D meets them.

Read our interview

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MAN ExpertTalks

  • Future fuels – What are options for naval operations?


    Future fuels – what are options for naval operations?

    MAN ExpertTalk

    Join our upcoming four-stroke MAN Expert Talk focusing on alternative and future fuels for naval applications

    Get insights on the latest news about the legal framework for emissions, a general overview of alternative and future fuels and their potential for naval operations. 

    Host: Dietmar Zutt

    Go to recording

  • MAN 175D


    MAN 175D - the most powerful high-speed engine: Perfect fit for patrol vessels

    MAN ExpertTalk

    In our four-stroke ExpertTalk we focus on our MAN 175D engine - the most powerful high-speed engine which is especially suitable for patrol vessels.

    Our experts give insights and provide guidance on our high-speed portfolio.

    Go to recording
  • 175D_MAN ExpertTalk


    MAN 175D – Power redefined

    MAN ExpertTalk

    The MAN 175D is one of the most versatile engines, meeting all the challenges of many different high-speed marine applications.

    In this Four-stroke ExpertTalk we want to present you the key benefits and latest updated of the 175D - the world's most powerful high-speed engine.

    Our agenda is:

    • Introduction of MAN 175D
    • Key Benefits : Power, Efficiency and Reliability
    • MAN 175D for marine applications

    Go to recording

MAN PrimeServ provides 24/7 service across the globe

Our range of services includes technical support, consulting and OEM spares, as well as maintenance, repair and comprehensive individualized service plans.

How you benefit:

  • Prompt delivery of high-demand OEM spare parts within 24 hours
  • Fast, reliable, and competent customer support 
  • Ongoing training and qualification of operators and maintenance staff
  • Diagnosis and troubleshooting with our high-performance online service.
Go to MAN PrimeServ

Achieve next level readiness with MAN Full ILS

Our aim is to provide you with absolute maximum reliability and readiness for your missions. With MAN Full ILS we take this goal far beyond the engine and equipment itself. Through in-depth information, manuals, as well as military-grade documentation, you can ensure unparalleled performance, while cutting operating time, costs and reducing complexity. All information is handed over with the purchase of your engine, so 100% of our focus can go to the mission on hand.

Repair & Maintenance


Achieve unique transparency over your technical needs and increase effectiveness through our advanced repair & maintenance insights and manuals.

  • ILS plan specifies all deliverables and milestones
  • Reliability Analysis (MTBF/MTTR calculation) and FMECA (Failure mode, effects and criticality analysis)
  • Create a System Breakdown (Bill of Material)
  • Concept for planned and unplanned maintenance
  • Level of Repair Analysis
  • Specification of the required spares and tools for each individual maintenance tasks 

Knowledge & Training

MAN classes

To ensure successful maintenance, expertise must be available to the right personnel at the right time and in the right format. Through comprehensive databases, training manuals, and documentation we enable your crew to increase effectiveness and avoid technical errors.

  • Logistic data for storage and transportation of spares and tools
  • Storage of all created data in customer’s database according to the requested military standards
  • Training program for on-board and base personnel
  • Life Cycle Cost Analysis taking into consideration all ILS elements
  • Delivery of drawings and data for NSN (NATO Stock Numbers) procurement
Custom technical manuals according to your request

Customized documentation

Young man with headset at display

To fulfil the broad range of tasks on naval vessels, your crew requires highly specific information, customized to the equipment and situation. As long-term partners of the defense market, we know the requirements and constraints of each application. We offer customized documentation according to your respective military standard for:

  • Operating instruction
  • Work instruction
  • Maintenance schedule
  • Electronical database for customers maintenance plan system which includes maintenance- and repair instructions (OmegaPS)
  • Spare parts catalogue and tool list: full system breakdown structure in electronic format
  • Training plan
  • FMECA and MTBF calculation

Your mechanical roadmap with Propulsion System Integration

MAN can offer consulting expertise to shipyards in the most specific and technical matters, and across all aspects of construction. We assist with selected technical challenges, as well as offer a single point of contact between Consulting, Engineering and Production. As such, we enable you to take on more complex constructions, while reducing coordination efforts, risks and costs, and increasing a ships’ life duration.



We assist you with laying the groundwork for successful construction and operation of all propulsion systems, taking into account all relevant parameters. Reducing construction errors with our services which include:

  • Consulting on ship and propeller performance
  • Reviewing documents and reports such as FAT reports, system diagrams, 3D models
  • Creating special reports such as shock, strength, noise and vibration calculation, black out study, ...
  • Preparation, moderation, and wrap-up of meetings



We provide a customized and extensive framework of baseline studies, specific recommendations, and simulations, which will increase development speed and reduce the need for testing. Engineering services include:

  • Concept study for base line design
  • Life cycle calculation
  • Simulation of different operating modes
  • Technical specifications and selection of equipment
  • Layout of media systems, block diagrams and single line drawings
  • Interface documents for mechanical, automation and electrical purposes
  • Functional descriptions
  • Merging supplier documents to a common standard 

Production Support


We assist with all aspects of the propulsion system’s implementation, merging all previous insights into one seamless configuration. Using flexible methods, highly specialized tasks may be outsourced to our experts in flexible time periods, cutting production costs and lowering risk of delay. Our services include:

  • Positioning and foundation of the components
  • Arrangement drawing with the original ship structure
  • Managing necessary tools and auxiliary devices
  • Assembly strategies and related working cards
  • Providing on-site support 

Extraordinary power for your business

MAN Energy Solutions is the right partner to innovate your business and move forward to a successful future with the MAN 175D. Get in touch now and find your perfect fit.
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MAN ExpertTalk: Customized high-end solutions for complex naval ships

In this live webinar, we dive into our propulsion and genset portfolio for naval vessels, focusing on the MAN 32/44CR, MAN 28/33D STC medium-speed and MAN 175D high-speed engines. 

Go to recording