Olthof Marine Group

What Olthof Marine Group does

Olthof Marine Group is a Dutch maritime engineering services company headquartered in Capelle aan den IJssel, Netherlands, founded in 1924 by Geert Olthof in Rotterdam and relocated after the 1940 bombing of Rotterdam. The company operates four integrated service pillars: Engine Service (alignment, overhaul, revision of marine engines), Ship Repair (welding, mechanical, electrical, navigation equipment, coating), Hydraulic Department (installation, inspection, diagnosis, maintenance), and Engine Spare Parts (genuine Mitsubishi parts including pistons, valves, gaskets, and complete revision kits). It is the official Mitsubishi Marine engine distributor and dealer of FVB Fravabo steering systems, relationships held since the 1980s, which anchor its access to proprietary propulsion technology and genuine parts supply.

The company serves shipping companies, dredging operators, and vessel owners worldwide with 24/7 support, executing project-based work at its Capelle aan den IJssel headquarters and at a dedicated quay in Den Helder. Its revenue model combines professional services (engine, ship repair, hydraulics) with hardware sales (Mitsubishi engines and spare parts); pricing is fully quote-based with no public tiers. Customers are enterprise-scale, illustrated by dredging and cargo vessel projects such as the Mahury, Charlock, and Wilson Wedau.

Olthof has remained a private, family-influenced business for nearly a century. In 2023, leadership passed from Henny Olthof to Gertjan de Gelder, who serves as Managing Director alongside heads of Engine Service (Arjen Both), Hydraulics/Projects (Warnard Middelkoop), and Spare Parts Sales. The company employs 11-50 staff, has no disclosed funding or institutional investor involvement, and markets primarily through its website, project case studies, LinkedIn and Facebook pages, and trade-show appearances including Europort 2025.

Name

Olthof Marine Group

Legal name

Olthof Marine Group

Website

https://olthof.eu

Company type

Private

Founded year

1924

Operating status

Operating

Headcount range

11–50 employees

Short description

Olthof Marine Group is a Netherlands-based marine engineering services firm providing engine maintenance, ship repair, hydraulic services, and genuine Mitsubishi spare parts to shipping companies and dredging operators worldwide, operating as the official Mitsubishi Marine distributor since the 1980s.

Ownership category

akta.pro rank

Product category

Marine Engineering Services

NAICS

Ship Building and Repairing (336611), Other Support Activities for Water Transportation (48839)

SIC

Ship & Boat Building & Repairing (3730), General Industrial Machinery & Equipment (3560), Engines & Turbines (3510)

akta.pro primary industry

Propulsion MRO, Spares & Field Service (Overhauls, retrofits, upgrades) (IMAJAHAN)

akta.pro secondary industries

Propulsion, Shafting & Rudder Repair (Engines, Gearboxes, Thrusters) (IMAJAFAC), Electrical, Automation & Control Systems Repair (TLAKAKAG), Propulsion Integration, Commissioning & Testing (Factory/sea trials, alignment) (IMAJAHAM)

Keywords

• Marine engine services
• Ship repair services
• Hydraulic system services
• Marine spare parts
• Marine engine distribution

Headquarters

HQ city

Capelle Aan Den Ijssel

HQ country

Netherlands

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Supply Chain, Infrastructure

Revenue model

1. Engine Service: Technical maintenance, repair, and revision of marine engines, including cylinder head revision, fuel pump service, and turbo maintenance.
2. Ship Repair: Repair and renovation services for vessels, including welding, mechanical repairs, structural modifications, electrical systems, and coating.
3. Hydraulic Department: Repair, maintenance, system installation, inspection, and diagnosis of hydraulic systems on vessels.
4. Engine Spare Parts: Sale of original Mitsubishi marine engine spare parts including pistons, valves, gaskets, and complete revision kits.
5. Mitsubishi Marine Engine Distribution: Sale and distribution of Mitsubishi marine engines as an official distributor.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels4 records

Core offering

Olthof Marine Group provides marine engine maintenance, repair, and overhaul services, ship repair (welding, electrical, mechanical, coating), hydraulic system services, and is the official distributor of Mitsubishi marine engines and spare parts plus FVB Fravabo steering systems. The company operates a workshop and quay facility and delivers 24/7 worldwide support to maritime operators.

Product overview

Olthof Marine Group is a maritime service company offering four integrated service pillars: Engine Service, Ship Repair, Hydraulic Department, and Engine Spare Parts. As an official Mitsubishi Marine Motors distributor and FVB Fravabo steering system dealer, the company provides comprehensive solutions spanning technical maintenance, repairs, installations, and project management. The integrated approach combines engine service expertise (including alignment and revision), ship repair capabilities (welding, electrical systems, coating), hydraulic system services (repair, maintenance, installation, inspection), and Mitsubishi genuine spare parts distribution to deliver complete maritime propulsion and system solutions.

Differentiator

Problem solved

Functional benefit

Products and services

• Engine Service

Quantifiable outcome

• More than 100 years of experience in the maritime sector
• +1 more outcomes

Named customers4 records

Segments1 record

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Two partnerships are on record, tiered core.

• MitsubishicoreChannel Partner/ Reseller/ Distributor · 1 January 1980Olthof Marine Group is an official distributor of Mitsubishi Marine engines and parts. The company has held this dealer relationship since the 1980s and represents Mitsubishi at events such as Europort 2025 alongside Mitsubishi dealers. The partnership provides access to genuine Mitsubishi marine engine technology and parts distribution for the maritime sector.
• FVB FravabocoreChannel Partner/ Reseller/ DistributorOlthof Marine Group is an official dealer of FVB Fravabo steering machines (stuurmachines). This partnership complements the marine propulsion offering by including steering systems.

Scale indicators3 records

Recent moves7 records

Expansion highlights5 records

Broad incumbents

• Wärtsilä: Global marine engine OEM and lifecycle service provider; broad incumbent in marine propulsion MRO, spares, and increasingly hybrid solutions, competing indirectly for service and parts revenue on any in-service fleet.
• Damen Shipyards: Major Dutch shipbuilder and repair group with extensive service network for newbuild, conversion, and MRO; competes broadly for the same vessel maintenance and refit wallet share across Dutch and European ports.
• MAN Energy Solutions: Large marine engine manufacturer and service network (including MAN PrimeServ); comparable as a marine propulsion OEM with its own distribution and after-sales service competing for European marine MRO share.
• Rolls-Royce Power Systems (MTU): Marine propulsion and power systems supplier (MTU/Yanmar) with full lifecycle service; relevant competitor for marine engine service, repower, and hybrid-electric propulsion contracts in European yacht, commercial, and governmental segments.
• Caterpillar Marine: Global marine engine and power solutions OEM with extensive dealer/service network; competes for marine propulsion installations, overhauls, and parts across the same European operator base as Olthof.

Direct peers

• Pon Power: Dutch marine distributor (Caterpillar Marine) offering engines, parts, and field service in the Netherlands; directly comparable as a competing OEM-authorized marine propulsion distributor serving the same Northwest European customer base.
• Buitendijk Sliedrecht: Netherlands-based marine engine and propulsion specialist delivering engine repair, overhauls, and propulsion installations; closest direct peer given overlapping marine MRO capabilities and regional customer base.
• Royal SMIT (Damen Marine Services): Dutch ship repair and marine services operator with yards and 24/7 emergency response; comparable as a ship repair provider in Northwest Europe, though much larger and broader in scope.
• De Waal Solid Partners: Dutch marine engine and generator service company providing engine overhauls, spare parts, and 24/7 field service; directly comparable in scope, geography, and customer profile to Olthof's engine service and parts offering.

Emerging players

• Anglo Belgian Corporation: Belgian manufacturer of medium-speed marine engines with growing service activities; comparable as a regional alternative marine engine brand and service provider competing for similar vessel classes in Northwest Europe.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/profile.php
• LinkedInlinkedin.com/company/olthof-engine-service

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Olthof Marine Group