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Retrofits and upgrades for marine applications

From retrofit products over engineering services to dual-fuel engine upgrades, we specialize in maximizing the value – and service life – of our assets.
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Keep your engines, systems, and equipment compliant and competitive 

Upgrade solutions and advanced customized retrofits by MAN PrimeServ open a world of options. They help you optimize reliability, efficiency, and performance; they lower maintenance costs an add operational flexibility. More importantly, they enable you to comply with increasing environmental regulations.

OEM-quality retrofits and upgrades take your application to the next level

Tap into the expertise of MAN PrimeServ to enhance the lifecycle of engines and equipment by MAN Energy Solutions and a range of legacy brands. Our portfolio of upgrade solutions brings world-class innovation to your lifecycle management. We enhance capabilities in five key areas:

  • Availability
  • Efficiency
  • Safety
  • Sustainability
  • Monitoring and controlling


MAN PrimeServ service centers across the world supply spare parts, services, and training to customers worldwide
We offer worldwide round-the-clock service 365 days a year
employees at MAN PrimeServ serve customers around the globe

Explore our retrofit and upgrade solutions

Meet the first European dredge converted to dual fuel use

In 2019, MAN Energy Solutions France successfully re-engineered the dredge, Samuel de Champlain. Owned by GIE Dragages-Ports de Rouen, this dredge is operated by the port of Nantes Saint-Nazaire. As part of its conversion, we replaced its diesel-electric MGO combustion propulsion system with three MAN 6L35/44DF engines, which run on LNG, and installed an LNG storage system aboard. The Samuel de Champlain is the first European dredge to undergo a dual-fuel conversion.

 Customer Damen
 Application Dredge
 Location Dunkerque, France
 Engine 3 x 6L35/44 Dual Fuel 
 Fuel Dual fuel (GNL & LNG MGO)
 MAN’s work scope Remotorization


Continue reading

  • A MAN PrimeServ 4-stroke propulsion retrofit & upgrade
    pdf, 2562 KB
  • AT2000 REM401 IO card replacement
    pdf, 623 KB
  • AT3000 remote control system retrofit
    pdf, 347 KB
  • Black smoke limitation package
    pdf, 802 KB
  • Cable package retrofit
    pdf, 516 KB
  • Controllable Pitch propeller optimization
    pdf, 386 KB
  • Controllable Pitch propeller optimization
    pdf, 386 KB
  • Controllable Pitch Propeller Upgrade & Nozzle
    pdf, 622 KB
  • Deuta Werke Tacho Converter
    pdf, 456 KB
  • Diesel to gas conversion - PrimeServ
    pdf, 1607 KB
  • Dual-fuel conversion
    pdf, 20548 KB
  • External Exchangeable Lube Oil Filter
    pdf, 488 KB
  • Flexible Turbocharger Cut-out
    pdf, 456 KB
  • L27/38 fuel system upgrade
    pdf, 380 KB
  • Lubricating Oil Centrifugal Filter
    pdf, 457 KB
  • MAN EcoCam
    pdf, 391 KB
  • MAN EcoNozzle
    pdf, 649 KB
  • MAN EcoOptimizer
    pdf, 611 KB
  • MAN EcoTorque
    pdf, 726 KB
  • MAN Engine Vault
    pdf, 9815 KB
  • MAN OPL Alphatronic
    pdf, 363 KB
  • MAN Propulsion Optimization Study
    pdf, 497 KB
  • ME-GI/GIE pump vaporiser unit for LNG and ethane
    pdf, 3716 KB
  • Mk3 injection pump for MAN32/40
    pdf, 481 KB
  • Mk3 injection pump for MAN48/60 & MAN 51/60
    pdf, 458 KB
  • Performance Measurement Indicator
    pdf, 14513 KB
  • PMI Adaptive Cylinder Control
    pdf, 592 KB
  • PMI Adaptive Cylinder Control
    pdf, 592 KB
  • Pre-docking inspection - PrimeServ
    pdf, 1672 KB
  • PrimeServ Turbocharger service retrofit brochure
    pdf, 13684 KB

Expert advice when and where you need it

At MAN PrimeServ, we help you ensure the reliable performance and availability of your marine engines and systems. Our experienced engineers and field technicians consult on – and supply – the latest in retrofit solutions and upgrades to help you meet specific business targets.

Talk to our experts

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How to organize large retrofit projects

MAN ExpertTalk: Thursday, June 4th, 2024 | 09:00 – 10:00 am CET 

Are you passionate about driving innovation in the maritime industry? Curious about how to tackle large retrofit projects and contribute to de-carbonization efforts? The sign up for our next MAN ExpertTalk!

In this exclusive webinar, our experts at MAN Energy Solutions will delve into the intricacies of retrofitting vessels for sustainability. Here’s what you can expect:
  • Insights into Retrofit Strategies: Discover how we navigate the complexities of retrofit projects, including the transition to new alternative fuels.
  • Collaboration with Repair Yards: Learn how we collaborate closely with repair yards and vessel owners to ensure seamless project execution.
  • Qualified Repair Yards: Get an exclusive peek at the list of repair yards that are currently qualified and preferred in the market.

Can’t Attend Live? No Worries! Even if you can’t make it to the live session, sign up anyway. We’ll send you the webinar recording afterwards, so you won’t miss out on valuable insights.

Sign up here