Van Stee Offshore

What Van Stee Offshore does

Van Stee Offshore is a Dutch privately held offshore support vessel operator headquartered in Harlingen, Netherlands, specializing in shallow-draft multi-purpose workboats for the offshore energy, offshore wind, and dredging sectors. The company operates a four-vessel fleet — Zwerver I (DP2, 68m), Zwerver II (DP2, 35m, Walk-to-Work), Zwerver III (DP1, 35m), and the flagship Zwerver V (DP2, 80m, FIFI 1) — all classified by Bureau Veritas and equipped with dynamic positioning, moonpools, 4-point mooring, and high-spec deck machinery supplied by Damen, Kongsberg, Schottel, Scaldon, and Heila. A defining capability is the combination of very shallow drafts (2.3-2.6m) with beaching ability, allowing access to nearshore and tidal zones where conventional offshore vessels cannot operate. Service lines include cable lay and burial, trenching, ROV support, diving, anchor handling, UXO identification, survey, mattress installation, towage, and Walk-to-Work personnel transfer.

The company traces its roots to dredging support services begun in the 1970s and was rebranded from HvS Dredging Support to Van Stee Offshore on March 30, 2020 to reflect its shift toward offshore energy and offshore wind. The business is family-owned, with Arjan van Stee as Director and visible multi-generational involvement (Roos van Stee participated in the Zwerver III christening in 2011). Revenue is generated almost entirely through project-based and time-charter contracts with enterprise clients, with no public pricing or recurring SaaS-style revenue model. Customer logos include Van Oord, Boskalis Hirdes, DEME/Tideway, Saipem, Jan De Nul, Prysmian, Deepocean, C-Ventus, and Great Lakes Dredge & Dock.

Van Stee Offshore sells through direct enterprise charter relationships rather than intermediaries, supported by a corporate website, LinkedIn presence, and a Mailchimp-based vessel availability newsletter. The fleet has executed projects in at least 13 countries across Europe, the Middle East, Africa, Asia (Taiwan, India, Maldives), and Latin America (Mexico). Revenue, headcount, and ownership structure beyond the family are not publicly disclosed, and there are no disclosed funding rounds, acquisitions, M&A activity, or institutional investors.

Name

Van Stee Offshore

Legal name

van Stee Offshore

Website

https://vansteeoffshore.com

Company type

Private

Founded year

1970

Operating status

Operating

Headcount range

51–100 employees

Short description

Van Stee Offshore is a Dutch family-owned operator of four shallow-draft, dynamically positioned support vessels serving offshore wind, oil and gas, and dredging contractors worldwide through project-based time charters. Its niche is beaching-capable vessels that access nearshore and tidal waters inaccessible to conventional offshore ships.

Ownership category

akta.pro rank

Product category

Offshore Support Vessel Services

NAICS

Support Activities for Water Transportation (4883), Commercial Air, Rail, and Water Transportation Equipment Rental and Leasing (532411)

SIC

Oil & Gas Field Services, Nec (1389), Water Transportation (4400)

akta.pro primary industry

Offshore Support & Marine Logistics Vessel Operators (PSV/AHTS) (TLADABAL)

akta.pro secondary industries

Offshore Marine & Aviation Support (PSVs, AHTS, Crew Boats, Helicopters) (EUALABAJ), Marine & Offshore Energy O&M (Offshore Wind, Platforms, Subsea Assets) (EUAEAGAO)

Keywords

• Offshore support vessels
• Shallow draft workboats
• Dynamic positioning services
• Cable lay burial
• Offshore wind vessel charter

Headquarters

HQ city

Harlingen

HQ country

Netherlands

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Infrastructure, Operations, Technology or R&D, Marketing or Sales

Revenue model

1. Vessel Charter Services: Time charter of shallow draft DP support vessels to offshore energy clients. Vessels deployed for specific projects including cable lay, trenching, anchor handling, ROV support, diving operations, and survey work. Revenue generated through day rates or project-based contracts.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Van Stee Offshore provides time-charter and project-based vessel hire services using a fleet of four shallow-draft multi-purpose Dynamic Positioning (DP1/DP2) support vessels — Zwerver I, II, III, and V — for offshore operations including cable lay and burial, ROV support, diving, trenching, UXO identification, anchor handling, survey work, and offshore renewables maintenance. All vessels are Bureau Veritas classified and can operate in extremely shallow waters and tidal zones inaccessible to conventional OSVs. The company serves enterprise clients in offshore oil & gas, offshore wind, and dredging sectors worldwide.

Product overview

Van Stee Offshore operates a fleet of 4 shallow-draft multi-purpose DP support vessels classified by Bureau Veritas, providing offshore support services for the renewable energy, oil & gas, and dredging industries worldwide. The fleet includes Zwerver I (DP2, 68 m, Walk-to-Work capable), Zwerver II (DP2, 35 m, Walk-to-Work), Zwerver III (DP1, 35 m), and Zwerver V (DP2, 80 m, FIFI 1) — all equipped with moonpools, high-spec deck equipment, and modern DP and navigational systems for operations such as cable lay/burial, ROV support, diving, trenching, UXO identification/removal, anchor handling, survey, and offshore renewables maintenance.

Differentiator

Problem solved

Functional benefit

Products and services

• Zwerver I Shallow Draft Multi Purpose DP2 Support Vessel, 68 m x 24 m, with 800 m² free deck space, 69 T bollard pull, 4/5-point mooring, spudlegs, and accommodation for 60 persons. Features a 4.0 x 4.0 m moonpool, DP2 dynamic positioning, and multi-crane configuration for cable lay, ROV support, survey, and diving operations, offered on a charter basis to offshore energy and dredging clients.
• Zwerver II Shallow Draft Multi Purpose DP2 Support Vessel, 35.10 m x 15.00 m, with Walk-to-Work capability via a passive heave compensated gangway system (Uptime LGAP 1420) operable up to Hs = 1.6 m, 60 T bollard pull, 300 m² free deck space, and accommodation for 17 persons. Equipped with a 2000 x 2000 mm moonpool and anchor-handling, trenching, and diving support capabilities, offered for charter.
• Zwerver III Shallow Draft Multi Purpose DP1 Support Vessel, 35.10 m x 15.00 m, with 57 T bollard pull, 300 m² free deck space, and accommodation for 13 persons. Features a 1000 x 1000 mm moonpool, dual deck cranes, and anchor-handling, trenching, ROV support, and UXO identification capabilities, offered for charter to offshore clients.
• Zwerver V Shallow Draft Multi Purpose DP2 Support Vessel, 80 m x 20 m, with 800 m² free deck space, 60 T bollard pull, FIFI 1 firefighting capability, and accommodation for 60 persons in 33 cabins. Features a triple crane configuration including a Scaldon OKC 100-30 AHC knuckleboom crane with 100 T lifting capacity, 2 moonpools, and DP2 dynamic positioning for cable lay, trenching, and heavy cargo handling, offered for charter.

Quantifiable outcome

• Vessels achieve bollard pull up to 69T (Zwerver I) and 60T (Zwerver V, II) enabling strong towing and anchor handling capability
• +2 more outcomes

Named customers10 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Six partnerships are on record, tiered core, major and significant.

• Bureau VeritascoreOthersClassification society for vessel certification. All vessels classified by Bureau Veritas, ensuring compliance with international maritime standards for unrestricted navigation, offshore support, firefighting, lifting operations, and diving support.
• Damen ShipyardsmajorStrategic or Co-development PartnerShipbuilder partnership for newbuild vessel construction. Zwerver V was built by Damen Shipyards as Multibuster 8020 series vessel, demonstrating strategic relationship for fleet expansion.
• ScaldonsignificantTechnology or IntegrationSupplier of offshore knuckle boom cranes. Fabricated 100T AHC (Active Heave Compensated) knuckle boom crane for Zwerver V, adding enhanced lifting capability.
• HeilasignificantTechnology or IntegrationMarine crane manufacturer supplying deck equipment including Heila 90.4S4 4T winch and Heila 1000/6S 20T AHC winches for vessel deck operations.
• KongsbergcoreTechnology or IntegrationDP system and navigation technology provider. Zwerver V equipped with Kongsberg K-POS DP-22 Dynamic positioning system and Kongsberg Spottrack laser reference system.
• SchottelcoreTechnology or IntegrationPropulsion system supplier. Zwerver V equipped with Schottel Azimuth propellers and tunnel thrusters for vessel propulsion and maneuverability.

Scale indicators3 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• DeepOcean: Integrated subsea services provider (a Van Stee customer) operating its own chartered vessel fleet alongside trenching, survey and IMR services. Competes with Van Stee on integrated subsea execution while also being a buyer of Van Stee vessel time, making it a hybrid customer/competitor in the same offshore niche.
• Swire Pacific Offshore: Hong Kong-based global OSV operator with PSV/AHTS/subsea fleet serving Asia-Pacific and Australia offshore energy markets. Broader geographic peer competing for the same Asia-Pacific (Taiwan, India, Australia) opportunities Van Stee is pursuing with Zwerver II/V.

Others

• Damen Shipyards: Dutch shipbuilder and Van Stee's strategic newbuild partner (built the Zwerver V Multibuster 8020). Not a direct competitor but the dominant supplier of the platform design Van Stee operates and a critical enabler of future fleet expansion.

Direct peers

• Siem Offshore: Norwegian OSV operator focused on AHTS, PSV and offshore subsea construction/IMR vessels, with strong offshore wind exposure. Competes for the same European subsea, cable-lay and W2W scopes as Van Stee.
• Maersk Supply Service: Danish-headquartered OSV operator with a global fleet of AHTSs, PSVs and subsea support vessels, increasingly pivoting toward offshore wind and cable lay. Direct competitor for offshore wind installation and subsea support scopes that anchor Van Stee's growth.
• Vroon Offshore: Dutch-based offshore support vessel operator with a fleet of PSVs, AHTSs, and subsea support vessels serving the North Sea, offshore wind, and oil & gas markets. Closest geographic and operational peer to Van Stee, with deeper fleet scale and similar Dutch shipowning heritage.
• Tidewater Inc. World's largest OSV operator with the broadest fleet of PSVs and AHTSs serving global offshore energy markets. Sets the benchmark for day-rate benchmarks and competes for shallow-water and W2W work in regions where Van Stee also operates.
• Bourbon Offshore: Global OSV operator providing PSVs, AHTSs, and crew boats to the offshore oil & gas industry with deep exposure to West Africa, Brazil, and Asia. Direct competitor on offshore marine services for the same enterprise clients (Saipem, Subsea7, etc.).
• Acta Marine: Dutch multipurpose workboat and offshore support vessel operator active in offshore wind, oil & gas, and coastal construction. Closest small-fleet Dutch competitor with similar coastal/shallow-water focus and direct overlap on North Sea and European OWF scopes.
• Havila Supply AS: Norwegian owner-operator of PSVs and AHTSs serving North Sea offshore energy and offshore wind markets. Comparable vessel classes and customer base to Van Stee, with overlapping European offshore wind tender opportunities.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/vansteeoffshore
• Xx.com/SteeVan70118
• Facebookfacebook.com/vansteeoffshore

Compliance30 records

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 Van Stee Offshore