De Groot Diesel Marine Services

What De Groot Diesel Marine Services does

De Groot Diesel Marine Services B.V. is a privately held Dutch marine propulsion and ship-services company headquartered in Dordrecht, Netherlands. It operates as an official dealer for MAN and Cummins marine diesel engines in the 250-2500 hp range, supplying, installing, and servicing these propulsion systems for inland waterway vessel operators across the Benelux and internationally. The company also manufactures and sells its own Van Ballegooy bow thruster systems (BSI400-BSI1400 series, 150-1400mm screw diameters) and distributes PTD ballast pumps (200-1200 m³/h capacities) in coordination with the affiliated Power Transmissions Dordrecht BV. The company has delivered more than 1,000 bow thruster systems over decades of operation.

The company's technical platform centers on integrated propulsion packages combining engines, bow thrusters, ballast pumps, gearboxes (Advance, Masson, Twin Disc, Reintjes), generator sets (Cummins, Iveco, Yanmar, Perkins), and supporting spare parts, with EU Stage V compliant models (MAN D2676LE47A/D2862LE44A; Cummins X15M) as the current frontier. Service and fabrication capabilities are anchored by three dry docks at the 2e Merwedehaven in Dordrecht with lifting capacity up to 1,200 tons for vessels up to 41 meters, plus a 58m x 17.50m assembly hall (16.77m ridge height) brought into use in late 2018 for in-house manufacturing of thrusters and pumps and smaller ship/section construction. The company delivers on-board maintenance via service vehicles in the Benelux and abroad, and performs full re-engining, dry docking, hull work, propeller service, and complete shipbuilding/reconstruction.

Commercially, the company generates revenue from hardware sales (new engines, proprietary bow thrusters, ballast pumps, generator sets, couplings, and parts), professional services (re-engining, overhauls, dry docking, on-board maintenance), and project-based ship construction. All pricing is quote-based; no standard pricing is published. The go-to-market is direct field sales combined with trade show presence (Maritime Industry Gorinchem, Europort Rotterdam, Open Scheepvaartdagen Antwerpen, Shipping-Technics-Logistics Kalkar), shipyard partnerships (Visscher Scheepsreparatie, Scheepswerf Talsma), and brand-aligned social/content marketing. Customers are inland waterway vessel operators (tankers, dry cargo, push boats, crane ships, multicats), ranging from family-operated single vessels to large professional fleets (Boskalis, Rhenus, Hebo, Koole, Croon, Fluviant, Gitra).

Name

De Groot Diesel Marine Services

Legal name

De Groot Diesel Marine Services B.V.

Website

https://degrootmarine.com

Company type

Private

Operating status

Operating

Headcount range

11–50 employees

Short description

De Groot Diesel Marine Services is a Dordrecht, Netherlands-based marine propulsion specialist serving inland waterway vessel operators as an official MAN and Cummins engine dealer, manufacturer of Van Ballegooy bow thrusters, and operator of three dry docks up to 1,200 tons.

Ownership category

akta.pro rank

Product category

Marine Propulsion Systems

NAICS

Ship Building and Repairing (336611)

SIC

Engines & Turbines (3510), Ship & Boat Building & Repairing (3730)

akta.pro industry

PRIMARYIMAJAHAN

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

Industrials, Manufacturing & Construction/Marine & Shipbuilding/Marine Propulsion & Power Systems (Engines, Drives, Thrusters)

SECONDARYIMAJAFAC

Propulsion, Shafting & Rudder Repair (Engines, Gearboxes, Thrusters)

Industrials, Manufacturing & Construction/Marine & Shipbuilding/Ship Repair, Maintenance & Conversion (MRO)

SECONDARYIMAJAHAM

Propulsion Integration, Commissioning & Testing (Factory/sea trials, alignment)

Industrials, Manufacturing & Construction/Marine & Shipbuilding/Marine Propulsion & Power Systems (Engines, Drives, Thrusters)

Keywords

• Marine diesel engines
• Bow thruster systems
• Ballast pumps
• Ship engine re-motorization
• Dry docking services

Headquarters

HQ city

Dordrecht

HQ country

Netherlands

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Supply Chain, Operations, Infrastructure, Marketing or Sales

Revenue model

1. New Marine Engine Sales: Sale of new propulsion engines (MAN, Cummins) with power ratings from 250 hp to 2500 hp. As official dealer, the company purchases engines from OEMs and resells/installs them for vessel propulsion and bow thruster applications.
2. Proprietary Products (Bow Thrusters, Ballast Pumps, Parts): Manufacturing and sale of Van Ballegooy bow thrusters, PTD ballast pumps, and spare parts. Products are sold with or without installation services.
3. Service, Repair and Maintenance: On-board maintenance services for ship engines in the Benelux and internationally, delivered via service vehicles. Includes total and partial engine overhauls (revisie), dry docking services, and installation work.
4. Dry Docking Services: Use of three dry docks with lifting capacity up to 1200 tons for vessels up to 41 meters in length. Includes hull work, propeller replacement, and vessel reconstruction.
5. Ship Building and Reconstruction: Complete ship construction, hull section rebuilding (herbouw), and jack-up ponton construction projects. The company constructed the mv Biesbosch (H&S Fairness) in 2012 and performs ongoing new-build and conversion projects.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels4 records

Core offering

De Groot Diesel Marine Services supplies and installs marine diesel propulsion engines (250–2500 hp) as an official dealer for MAN and Cummins, and manufactures its own Van Ballegooy bow thruster systems (BSI series, 150–1400 mm propeller diameter) along with PTD ballast pumps (200–1200 m³/h). The Dordrecht facility operates three dry docks with up to 1,200-ton lifting capacity for vessels up to 41 meters, delivering re-engining, dry docking, hull and propeller work, and on-board maintenance services across the Benelux and internationally via service vehicles.

Product overview

De Groot Diesel Marine Services is a marine diesel services company operating as an official dealer for MAN and Cummins propulsion engines (250-2500 hp), while also manufacturing its own Van Ballegooy bow thruster systems (BSI series, 150-1400mm diameter) and PTD ballast pumps (200-1200 m³/h). The company provides complete propulsion packages including generator sets, keerkoppelingen/couplings (Advance, Masson, Twin Disc, Reintjes), spare parts, and related components. Services include dry-docking (3 docks, 1200 tons capacity, 41m length), re-engining installation, on-board maintenance, and international service support via service vehicles. The product portfolio is centered around propulsion systems for inland waterway vessels, combining engine supply (MAN, Cummins) with proprietary thruster and pump products for complete ship system solutions.

Differentiator

Problem solved

Functional benefit

Products and services

• MAN Marine Diesel Engines Official dealer sales, installation, re-engining, maintenance, and overhaul services for MAN propulsion engines ranging from 250 hp to 2500 hp. Models include D2862LE44A, D2862LE421, D2676LE421, and the D2676LE47A Stage V compliant variant. Targeted at inland waterway and short-sea vessel operators requiring new propulsion installations or engine repowering.
• Cummins Marine Diesel Engines Official dealer sales, installation, re-engining, maintenance, and overhaul services for Cummins propulsion engines from 250 hp to 2500 hp. Models include X15M (Stage V), QSK19M, QSK38M1, QSK50M1, KTA19M3, KTA38M2, KTA50M2, and NT855M. De Groot Diesel Marine Services is one of the oldest Cummins dealers in Europe.
• Van Ballegooy Bow Thrusters (BSI Series) In-house manufactured proprietary bow thruster systems branded Van Ballegooy. The BSI series includes BSI400, BSI500, BSI600, BSI700, BSI800, BSI900, BSI1000, BSI1200, and BSI1400 models with propeller diameters ranging from 150 mm to 1400 mm. Over 1,000 systems have been delivered over decades of operation. Sold with or without installation services.
• PTD Ballast Pumps Specialized ballast pumps with capacities ranging from 200 m³/h to 1200 m³/h, supplied through affiliated Power Transmissions Dordrecht BV. Models include PTD H150-2-6, PTD H200-4.5-8, PTD H250-7.5-10 Ballastjet, PTD H350-11-14 Ballastjet, PTD V350-7.5-12 Ballastjet, PTD V350-11-12 Ballastjet, PTD V350-11-14 Ballastjet, and PTD V350-15-14 Ballastjet pumps.
• Generator Sets Cummins, Iveco, Yanmar, and Perkins generator sets for ship power systems, ranging from 30 kVA to 515 kWe. Includes Stamford generators and shaft-power (as-generator) configurations.
• Keerkoppelingen (Marine Reverse Gear Couplings) Reverse gear couplings supplied as part of propulsion packages, including Advance HCD600, HCD1000, HCD600A, Masson MM W3450, MM W3700, Twin Disc MG5170, MGX 5225 DC, and Reintjes WAF264. Paired with MAN and Cummins engines in propulsion installations.
• Spare Parts Official dealer supply of Cummins and MAN spare parts for motors and engines, including filters and consumables offered at competitive prices for Cummins users and other major engine brands.
• Dry Docking Services Three dry docks in the 2e Merwedehaven in Dordrecht with lifting capacity up to 1,200 tons for vessels up to 41 meters in length. Includes hull work, propeller replacement, and vessel reconstruction.
• On-Board Maintenance and Repair Services On-board maintenance and repair of ship engines delivered via service vehicles across the Benelux and internationally. Includes total and partial engine overhauls (revisie), dry docking, and field engineering support.
• Re-engining Services (Hermotorisering) Complete engine replacement and installation services for marine vessels, including engine removal, new engine installation, coupling alignment, and installation of cooling, exhaust, and control systems. Positions vessel operators to comply with EU Stage V emissions standards.
• Ship Building and Reconstruction Complete ship construction, hull section rebuilding (herbouw), and jack-up ponton construction projects executed at the Dordrecht facility. Includes new builds and conversion projects such as the mv Biesbosch (H&S Fairness) completed in 2012.

Quantifiable outcome

• Over 1000 Van Ballegooy bow thruster systems delivered over decades of operation
• +2 more outcomes

Named customers14 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

Feature3 records

Partnerships

Six partnerships are on record, tiered core and minor.

• MAN (as official dealer)coreChannel Partner/ Reseller/ DistributorDe Groot Diesel Marine Services is an official dealer of MAN marine diesel engines. They supply, install, and service MAN engines ranging from the D2676LE421 (520 hp) to D2862LE444 (1000 hp) and D2862LE44A models. MAN is presented alongside Cummins as the two primary engine brands. The company first represented MAN at Europort 2019 as MAN's representative.
• Cummins (as official dealer)coreChannel Partner/ Reseller/ DistributorDe Groot Diesel Marine Services is one of the oldest Cummins dealers in Europe. They supply, install, and service Cummins engines including QSK19M, QSK38M1, QSK50M1, KTA19M3, KTA38M2, and the X15M. The company has installed the first Cummins X15M for marine use in Europe (MS Nil Obstat).
• Advance Keerkoppelingen (as dealer)coreChannel Partner/ Reseller/ DistributorDe Groot Diesel Marine Services is a dealer of Advance marine reverse gears (keerkoppelingen), including HCD600, HCD1000, and HCD600A models. They pair Advance gearboxes with Cummins and MAN engines in propulsion installations. Advance gearboxes are noted for favorable pricing and proven quality.
• Scheepswerf TalsmaminorImplementation/ SI/ Consulting PartnerScheepswerf Talsma, a shipyard, collaborates with De Groot Diesel Marine Services for engine installations. De Groot supplied a Cummins QSK19M HX engine for MS Spirit of Romo, which was installed by Scheepswerf Talsma.
• Visscher Scheepsreparatie en BouwminorImplementation/ SI/ Consulting PartnerVisscher Scheepsreparatie en Bouw, a shipyard in the Netherlands, collaborates with De Groot for engine supply and installation on customer vessels. Projects include MS Lierdam (MAN engine) and MS Fossa (Cummins QSK19M).
• Power Transmissions Dordrecht BVcoreStrategic or Co-development PartnerPower Transmissions Dordrecht BV is a closely related company that specializes in PTD ballast pumps. The two companies share a website connection and jointly exhibit at trade shows such as Open Scheepvaartdagen Antwerpen, suggesting an integrated business relationship for complementary marine products.

Scale indicators6 records

Recent moves7 records

Expansion highlights4 records

Broad incumbents

• Volvo Penta: Marine diesel engine OEM with a strong dealer/service network across European inland and leisure marine markets. Comparable as an alternative marine propulsion supplier to operators who today buy from De Groot's MAN/Cummins portfolio.
• Caterpillar Marine: Marine engine and power solutions provider competing in the same propulsion engine band as MAN and Cummins. Comparable because vessel operators evaluating re-engining often include Cat in the same RFP alongside De Groot's brands.
• Wärtsilä: Global marine engine OEM and lifecycle service provider. Comparable because it sells marine propulsion engines and provides overhaul/service through its global service network, directly overlapping with De Groot's MAN/Cummins dealership and overhaul business.
• MTU / Rolls-Royce Power Systems: Marine propulsion and power systems manufacturer and service provider. Comparable for the same reason as Wärtsilä and Cat — competes for engine supply, repowering, and service contracts in the European inland and offshore marine market.
• MAN Energy Solutions: OEM of MAN marine engines (including the D2862 and D2676 series De Groot sells). Comparable as the upstream manufacturer whose products De Groot distributes; also a competitor in service and retrofits via its own PrimeServ network.
• Damen: Major Dutch shipbuilder and ship repair group with extensive inland and offshore vessel capabilities. Comparable because it competes for Dutch/Benelux marine engineering, newbuild, and refit work, though it operates across a much broader portfolio than De Groot's propulsion-focused niche.

Direct peers

• Padmos: Dutch inland shipyard and ship repair specialist based in Alblasserdam. Comparable as a Benelux-based shipyard offering newbuild, refit, and propulsion services for inland waterway vessels — directly overlapping De Groot's customer base.
• Visscher Scheepsreparatie en Bouw: Dutch shipyard and ship repair company collaborating with De Groot on propulsion installations for vessels like MS Lierdam and MS Fossa. Comparable as a direct Dutch ship repair/newbuild competitor working with the same inland operator customers.
• Bolier: Dutch inland shipbuilder and repair yard with a similar footprint in newbuild and refit of commercial inland vessels. Comparable because it competes for the same Dutch inland marine engineering and dry-docking projects.
• Thecla Bodewes Shipyards: Dutch shipbuilding group focused on inland and short-sea commercial vessels, including cargo ships and tankers. Comparable as a Dutch competitor for newbuild contracts, propulsion system outfitting, and refits on the same inland vessel types.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

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Revenue estimate

Valuation estimate

Number of profiles

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 De Groot Diesel Marine Services