A marine diesel engineer at the vessel, usually within days: fault diagnosis, in-situ repair and a documented hand-over. We work dockside, in the shipyard and alongside your crew — Europe-wide, with worldwide travel on request.
A charter slot, a yard period or an owner's trip usually depends on the engine being right. That is why superyacht engine repair is as much about clear information as it is about tooling: what is actually wrong, what it takes to fix it, and how long the vessel is out of service. We give you that picture before the spanners come out.
Superyacht Engine Service is the superyacht division of Marine Service Altena B.V., a Dutch marine engineering company with years of experience on complex diesel engine work — from inland commercial fleets to international yacht projects. We are an independent service provider: our loyalty is to the vessel and the engineer responsible for it.
| Stage | What happens | Typical timing |
|---|---|---|
| First contact | Phone, WhatsApp or the form on this page. Symptoms, engine type, running hours, location and departure date. | Same day |
| Remote assessment | We talk it through with your engineer, review photos, alarm lists and logged data, and advise what to check before we travel. | Within hours |
| Mobilisation | Engineer travels to the vessel with tooling and the parts most likely to be needed. | Days, faster for urgent cases |
| Diagnosis on board | Measurement-based fault finding, followed by a written finding and a quotation for the repair. | Same visit |
| Repair | In-situ repair where possible; component removal and workshop work where it is the right call. | Per agreed plan |
| Testing and hand-over | Load test or sea trial, readings recorded, work documented for the vessel's maintenance file. | Before we leave |
Most of our work comes through chief engineers, yacht management companies, shipyards and marine service intermediaries. That means arriving with the right paperwork, respecting the vessel's ISM and permit-to-work procedures, keeping the engine room clean, and reporting in a form you can pass on to the owner or the class surveyor without rewriting it.
Hands-on experience across the brands that power most of the fleet: Caterpillar / CAT (including engines supplied through PON Power), Cummins, MAN and MTU, plus the generator sets built around them. We are an independent workshop and not an authorised dealer or official service partner of any engine manufacturer; brand names are used only to describe the equipment we service.
For urgent cases in Northern Europe and the Mediterranean we normally mobilise within days, and we start advising by phone immediately. Call +31 6 20743967 with the vessel location and departure date and you will get a realistic answer, not a placeholder.
Most engine work — injectors, cylinder heads, turbochargers, coolers, pumps, fuel systems, alignment checks — is done in situ with the vessel afloat. We only recommend lifting or removing an engine when the scope genuinely requires it.
Yes. We source genuine and OEM-equivalent parts through established suppliers and advise honestly on where genuine parts matter and where a quality equivalent is sound engineering.
Yes. The company grew up on commercial and inland shipping engines, which is exactly where high running hours and unforgiving schedules build diagnostic experience. We serve both fleets.
Engine make and model, running hours, the alarms or fault codes shown, when the symptom appears (cold, under load, at what RPM), what has already been checked, the vessel location and the date you need to sail.
Send the details below and you will hear back from an engineer, not a call centre. For a vessel that is stranded or on a tight departure slot, call +31 6 20743967 or message us on WhatsApp.
Describe the symptoms and we will tell you straight away whether it can be resolved on board, what parts are likely needed, and when we can be at the vessel.
Urgent callout for a vessel that is stranded or on a tight departure slot.
→ Read more OverhaulFull or partial overhaul when a repair is no longer the economical answer.
→ Read more CoverageWhere we travel: Netherlands, Mediterranean, Atlantic coast and beyond.
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