De Klerk Werkendam

What De Klerk Werkendam does

De Klerk Werkendam is a privately held Dutch civil engineering contractor founded in 1859, headquartered in Werkendam, Netherlands, operating through two wholly-owned divisions: De Klerk Waterbouw (hydraulic engineering) and De Klerk Staalbouw (steel construction), with an additional mechanical engineering (Werktuigbouw) discipline and a manufacturing workshop in Kruiningen. The company delivers water infrastructure, steel structures, and heavy mechanical components for quay walls, locks, flood barriers, harbors, sluices, and industrial applications, executing projects end-to-end with its own workforce and equipment. Its primary customers are Dutch public-sector and regulated entities, including Rijkswaterstaat, provincial authorities, and port operators such as the Port of Rotterdam Authority, with revenue generated via competitive tendering and consortium arrangements with partners such as Hakkers and Van Oord on large-scale port-expansion projects like the Yangtzekanaal widening.

The business model is project-based and contract-driven: revenue is derived from one-off construction contracts and consortium-based professional services engagements, with pricing determined through competitive tendering rather than published rates. De Klerk pursues an enterprise field-sales motion, engaging directly with project owners and consortium partners for large infrastructure works, and maintains a modest digital presence (corporate website, Instagram) primarily for employer branding. Notable project references include maintenance of the Stormvloedkering Ramspol guide roll system, the Zee en Delta sluice maintenance program, the Oosterscheldekering sluice adjustment Phase 1, renovation of the Snelle Sluis Moordrecht, and fabrication of a main girder for Nedcranes container cranes. The company is privately held with no identified parent, private equity, or venture capital backing, consistent with its long-standing founder/family-controlled character.

Name

De Klerk Werkendam

Legal name

De Klerk Werkendam

Website

https://deklerkbv.nl

Company type

Private

Founded year

1859

Operating status

Operating

Headcount range

51–100 employees

Short description

De Klerk Werkendam is a privately held Dutch civil engineering contractor founded in 1859 that delivers hydraulic, steel, and mechanical engineering services for water infrastructure and port projects, serving government agencies and port authorities in the Netherlands via competitive tenders and consortiums.

Ownership category

akta.pro rank

Product category

Hydraulic Engineering and Marine Construction Services

NAICS

Water and Sewer Line and Related Structures Construction (237110), Water and Sewer Line and Related Structures Construction (23711), Heavy and Civil Engineering Construction (237)

SIC

Water, Sewer, Pipeline, Comm & Power Line Construction (1623), Heavy Construction Other Than Bldg Const - Contractors (1600)

akta.pro primary industry

Stormwater & Drainage Infrastructure Construction (Sewer, Detention, Outfalls) (IMAFAGAF)

akta.pro secondary industries

Intake/Outfall & Raw Water Abstraction Works (River/Sea Intakes, Outfalls) (IMAFAGAI), Construction Management & Delivery (EPCM/CMAR/Design-Build Oversight) (EUANALAE), Design & Engineering for Renewal/Expansion (Pipelines, Pump Stations, Treatment Plants) (EUANALAD), Storage & Conveyance Structures (Reservoirs, Tanks, Culverts, Tunnels) (IMAFAGAE)

Keywords

• Hydraulic engineering services
• Steel construction services
• Mechanical engineering services
• Marine infrastructure construction
• Flood protection infrastructure

Headquarters

HQ city

Werkendam

HQ country

Netherlands

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Infrastructure, Supply Chain

Revenue model

1. Infrastructure Construction Services: De Klerk generates revenue through direct project contracts for water infrastructure, steel construction, and mechanical engineering projects. Revenue is project-based and derived from competitive tendering with government agencies and port authorities.
2. Consortium Projects: Participation in consortium arrangements with partners such as Hakkers and Van Oord for large-scale port infrastructure projects, dividing scope and revenue responsibilities.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels2 records

Core offering

De Klerk Werkendam is a Dutch civil engineering contractor that delivers hydraulic engineering, steel construction, and mechanical engineering services for water and port infrastructure. The company executes projects from planning to completion using its own people and equipment across three disciplines: waterbouw (quays, locks, flood barriers, harbors, coastal works), staalbouw (structural steel for container cranes and industrial frames), and werktuigbouw (maintenance and renovation of heavy mechanical systems such as sluice mechanisms and guide roll systems).

Product overview

De Klerk Werkendam is a Dutch civil engineering contractor founded in 1859, operating as a single unified company with three integrated disciplines. The company delivers projects from planning to completion using their own people and equipment. Waterbouw (hydraulic engineering) handles quay walls, locks, flood barriers, and harbor infrastructure. Staalbouw (steel construction) fabricates structural components including container cranes and industrial frames. Werktuigbouw (mechanical engineering) maintains and renovates heavy mechanical systems and large industrial components. Projects span flood protection infrastructure, maritime facilities, and industrial mechanical systems across the Netherlands.

Differentiator

Problem solved

Functional benefit

Products and services

• Waterbouw (Hydraulic Engineering)

Named customers1 record

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

Two partnerships are on record, tiered core.

• HakkerscoreStrategic or Co-development Partner · 24 July 2026Hakkers is a consortium partner with De Klerk and Van Oord on the Port of Rotterdam Yangtzekanaal widening project. The consortium delivered phase one (tugboat quay with 12 berths and shore power) and is executing phase two involving 1,450 metres of quay wall construction.
• Van OordcoreStrategic or Co-development Partner · 24 July 2026Van Oord is a consortium partner with De Klerk and Hakkers on the Port of Rotterdam Yangtzekanaal widening project. The consortium handles major port infrastructure expansion including dredging of approximately 1.4 million cubic metres of sand.

Scale indicators2 records

Recent moves5 records

Expansion highlights4 records

Broad incumbents

• Strukton: Dutch infrastructure contractor with civil engineering, water works, and asset-management capabilities. Comparable as a competitor in Dutch hydraulic, sluice, and civil infrastructure tenders.
• Van Oord: Major Dutch marine contractor and consortium partner with De Klerk on the Port of Rotterdam Yangtzekanaal widening. Operates broadly across dredging, offshore wind, and land reclamation; relevant as both a partner and a competing bidder for large Dutch hydraulic tenders.
• DEME: Belgian marine contractor with strong dredging, land reclamation, and coastal-defense capabilities. Comparable as a European incumbent competing for Dutch and Northwest European hydraulic infrastructure tenders.
• Jan De Nul: Large Belgian marine contractor with dredging, marine construction, and offshore capabilities. Comparable as a competing bidder on large-scale port expansion and coastal-defense projects across Northwest Europe.
• Heijmans: Major Dutch general contractor with infrastructure, water, and civil engineering operations. Comparable as a competitor in Dutch public-works tenders, including civil and water-related scopes where De Klerk operates.
• Boskalis: Large Dutch-listed marine contractor and dredging heavyweight operating globally in port construction, coastal defense, and offshore services. Comparable as a competing bidder for major Dutch hydraulic and port-infrastructure tenders.
• TBI Holdings: Diversified Dutch construction group operating across civil infrastructure, water, and technical services. Comparable as a parent-style incumbent competing in Dutch civil and water infrastructure tenders.

Others

• Royal HaskoningDHV: Dutch engineering consultancy with strong water, maritime, and Delta expertise. Comparable as a partner/consultant ecosystem participant on Dutch hydraulic projects and as a potential upstream advisor to De Klerk's clients.

Direct peers

• Mourik: Dutch industrial services and civil contractor with activities in environmental works, dredging, and industrial maintenance. Comparable to De Klerk as a Netherlands-based mid-market specialist pursuing industrial and infrastructure contracts.
• Hakkers: Dutch waterbouw specialist and consortium partner with De Klerk and Van Oord on Yangtzekanaal. Directly comparable as a Netherlands-based hydraulic engineering contractor of similar size and capability profile, competing for the same waterbouw tenders.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat3 records

Key risks6 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/deklerkwerkendam
• LinkedInlinkedin.com/company/de-klerk-werkendam

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries2 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 De Klerk Werkendam