A wide overhead view of a massive marine diesel engine power plant inside a spotless ship's engine room, featuring two large, multi-cylinder engines with distinct yellow manifold piping, showcasing complex machinery serviced by Alfamarine.

Independent Marine Engine Service

Global Reach and Professional Technical Expertise

At Alfamarine, we collaborate with a team of highly skilled field service engineers and a dedicated technical support group to provide comprehensive engine solutions. Our mobile teams are ready to be deployed to sea-going vessels and shipyards worldwide, ensuring your fleet remains operational wherever it sails.

An interior view of a complex vessel engine room, looking up at several massive marine engine components, possibly crankshaft sections, suspended by overhead cranes from the high ceiling catwalks.
A skilled Alfamarine field engineer, wearing a blue hard hat and protective gloves, performs a precise connecting rod installation during a major marine engine overhaul within a brightly lit vessel's engine room.
A view of the top end of a large marine diesel engine during maintenance, showcasing the perfectly aligned row of overhead valve rocker arms and springs after a professional service by Alfamarine.

Comprehensive Marine Engine Service and Maintenance

Extensive Maker Expertise

With decades of hands-on experience, we cover a vast range of major engine brands and licensed manufacturers:

  • MAN B&W: All licenses including Holeby, STX, Hyundai, ZJMD, Niigata, etc.
  • Daihatsu: Including Anqing models.
  • Wartsila & MaK
  • Hyundai Himsen
  • Yanmar, Bergen, ABC, Deutz, and many others.

Technical Support & Diagnostics

We don’t just repair; we analyze. Our technical team ensures every project is backed by precise data:

  • Condition Assessments: Detailed inspections of marine diesel and dual-fuel engines.
  • Maintenance Planning: Developing service scopes based on running hours and current engine condition.
  • Parts Logistics: Identifying and preparing lists of required spare parts for the agreed scope of work.
  • Performance Optimization: Troubleshooting, adjustments, and efficiency checks.

On-Board Services & Specialized Repairs

We specialize in minimizing downtime through efficient on-site interventions:

  • General Overhauls: Comprehensive repairs executed within agreed timeframes.
  • In-Situ Machining: Specialized repairs of engine block landing and sealing surfaces performed on-board.
  • Major Rebuilding: Post-damage recovery, including the renewal of engine blocks and crankshafts.
  • Alignment Services: Precise alignment of engines with generators, shaft lines, and PTOs.
A detailed close-up showing a massive marine diesel engine piston and connecting rod assembly suspended by heavy-duty chains, illustrating the scale and complexity of ship engine maintenance and repair work.
An overhead wide-angle view from a ship's engine room catwalk, showing an industrial crane successfully lifting and maneuvering a large, heavy marine engine component or crankshaft through the complex machinery grid.
A massive marine engine piston and connecting rod assembly is precisely lowered back into the engine block using heavy-duty lifting chains and hooks during a ship main engine overhaul.

Reliability Proven by Over 500 Engine Overhauls

Key Engine Models in Our Portfolio

Our experience is backed by over 500 successful major projects, focusing on high-performance models such as:

  • MAN: 16/24, 21/31, 23/30, 27/38, 28/32, 32/40, 48/60, 58/64
  • Himsen: H17/28, H21/32, H25/33, H35DF
  • MaK: M20, M25, M32, M43
  • Yanmar: NY16, EY18, EY22, EY26
  • Wartsila: L20, L26, L32, 34DF
  • Daihatsu: DK20, DE23, DK28
  • Bergen: K, C, and B-series
An Alfamarine marine field engineer, seen from behind wearing safety ear protection and gloves, works carefully on a complex, partially disassembled large vessel main engine inside a detailed ship's engine room.

Get a Professional Quote for Your Engine Service

Is your vessel due for an overhaul or facing technical challenges?

Our team of expert engineers is ready to support your fleet 24/7, anywhere in the world. From routine maintenance to complex emergency repairs, we deliver reliability you can trust.

  • Fast Response Time – Global deployment to ships and shipyards.
  • Technical Precision – OEM-level expertise at independent service rates.
  • Full Support – From diagnostics and spare parts to final alignment.

We Are Available Worldwide!

To help us provide a precise quote, please include the following details in your inquiry:

  • Engine Type & Model
  • Current Running Hours
  • Vessel’s Current Location

Contact our Technical Department today:

+48 505 186 795parts@alfamarine.pl