Company lists · Data refreshed September 2026

Top 25 Offshore drilling contractors based in the Netherlands

Name: Offshore drilling contractors based in the Netherlands
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 52 companies tracked

RevenueBase identified 52 offshore drilling contractors headquartered in the Netherlands as of September 2026 and tracks 14,235 professional contacts across them, including 4,562 with verified work emails. Amsterdam is the largest hub.

This list covers offshore drilling contractors headquartered in the Netherlands, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 17, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 17, 2026 86% judged on-target in blind review

52Companies

14,235Contacts tracked

4,562Verified emails

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The 25 largest offshore drilling contractors based in the Netherlands

Ranked by team size

Top 25 of 52 offshore drilling contractors based in the Netherlands, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to offshore drilling contractors: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	SBM Offshore	Partial evidence	Amsterdam, NetherlandsHQ checked Sep 17, 2026	5,001-10,000	8,478 contacts →
	Partial evidence “SBM Offshore is the world’s deepwater ocean-infrastructure expert.” Source: RevenueBase Database · checked Sep 17, 2026
2	Heerema Marine Contractors	Strong evidence	Leiden, NetherlandsHQ checked Sep 17, 2026	1,001-5,000	2,643 contacts →
	Strong evidence “Heerema Marine Contractors is a world-leading marine contractor in the international offshore energy industry.” Source: RevenueBase Database · checked Sep 17, 2026
3	Dixstone	Indirect evidence	Hoofddorp, NetherlandsHQ checked Sep 17, 2026	1,001-5,000	546 contacts →
	Indirect evidence “Headquartered in Hoofddorp, the Netherlands, Dixstone is an affiliate of the Perenco Group, specialized in integrated solutions for the industry.” Source: RevenueBase Database · checked Sep 17, 2026
4	Seafox	Partial evidence	Hoofddorp, NetherlandsHQ checked Sep 17, 2026	1,001-5,000	313 contacts →
	Partial evidence “Seafox is a leading global offshore jack-up company, providing services to support the oil & gas and renewable industry.” Source: RevenueBase Database · checked Sep 17, 2026
5	Petrodec	Strong evidence	Spicalaan 13 2132 Jg Hoofddorp the Netherlands, NetherlandsHQ checked Sep 17, 2026	51-200	168 contacts →
	Strong evidence “Petrodec is a responsible offshore contractor, ready to deliver safe, efficient and innovative decommissioning or re-use solutions.” Source: RevenueBase Database · checked Sep 17, 2026
6	VAN Laar Maritime B.V	Indirect evidence	Ijmuiden, NetherlandsHQ checked Sep 17, 2026	11-50	81 contacts →
	Indirect evidence “Van Laar Maritime owns and operates a growing fleet of 33 guard, chase- and (seismic) support vessels worldwide.” Source: RevenueBase Database · checked Sep 17, 2026
7	Dräger Marine & Offshore	Partial evidence	Hoogvliet, NetherlandsHQ checked Sep 17, 2026	51-200	81 contacts →
	Partial evidence “Dräger Marine & Offshore is one of the major players in the port of Rotterdam when it comes to high quality marine & offshore services in the field of firefighting, rescue and…” Source: RevenueBase Database · checked Sep 17, 2026
8	Seamar	Indirect evidence	Den Helder, NetherlandsHQ checked Sep 17, 2026	11-50	63 contacts →
	Indirect evidence “SeaMar is a family-owned maritime service provider, founded in and headquartered in Den Helder.” Source: RevenueBase Database · checked Sep 17, 2026
9	Swift Drilling B.V	Partial evidence	Oosterhout, NetherlandsHQ checked Sep 17, 2026	51-200	54 contacts →
	Partial evidence “SWIFT DRILLING: HIGH VALUE DRILLING, WORKOVER + P&A SOLUTIONS Within Swift Drilling we strive to have the best performance in safety and efficiency in good cooperation with the…” Source: RevenueBase Database · checked Sep 17, 2026
10	OOS Energy	Partial evidence	Goes, NetherlandsHQ checked Sep 17, 2026	201-500	49 contacts →
	Partial evidence “OOS Energy is founded in 2017 to provide Drilling and Plugging & Abandonment services to the oil & gas industry.” Source: RevenueBase Database · checked Sep 17, 2026
11	ROG Ship Repair & Rotterdam Offshore Group	Indirect evidence	Rotterdam, NetherlandsHQ checked Sep 17, 2026	11-50	37 contacts →
	Indirect evidence “ROG, your partner for Dockside and Onsite services!” Source: RevenueBase Database · checked Sep 17, 2026
12	SPT Offshore	Strong evidence	Woerden, NetherlandsHQ checked Sep 17, 2026	11-50	30 contacts →
	Strong evidence “SPT Offshore, a DEME Offshore subsidiary, is the leading offshore contractor for suction pile anchors and foundations.” Source: RevenueBase Database · checked Sep 17, 2026
13	Ardent	Partial evidence	Ijmuiden, NetherlandsHQ checked Sep 17, 2026	51-200	28 contacts →
	Partial evidence “We are Ardent, a leading marine and offshore services company, delivering effective and innovative solutions.” Source: RevenueBase Database · checked Sep 17, 2026
14	Llyr Marine	Partial evidence	Jg, NetherlandsHQ checked Sep 17, 2026	501-1,000	27 contacts →
	Partial evidence “LLyr Marine is Operating a Fleet of 24 Offshore Vessels: AHTS, DSV, Pipelay, Barges, Multicats, Lift boat.” Source: RevenueBase Database · checked Sep 17, 2026
15	Runwell Energy Services	Indirect evidence	Emmen, NetherlandsHQ checked Sep 17, 2026	11-50	19 contacts →
	Indirect evidence “We are a company in the petrochemical and geothermal industry who is specialized in the maintenance and re-certification of equipment used in these industries such as- High…” Source: RevenueBase Database · checked Sep 17, 2026
16	Maritime Construction Services BV	Indirect evidence	Amsterdam, NetherlandsHQ checked Sep 17, 2026	51-200	15 contacts →
	Indirect evidence “At MCS we are an unique organisation dedicated to supporting our clients and ready to answer any questions you may have.” Source: RevenueBase Database · checked Sep 17, 2026
17	Dutch Drilling Consultants B.V	Partial evidence	Waddinxveen, NetherlandsHQ checked Sep 17, 2026	11-50	14 contacts →
	Partial evidence “Dutch Drilling Consultants (DDC) offers turn key drilling services worldwide, including engineering, consultancy and production & assembly of temporary structures.” Source: RevenueBase Database · checked Sep 17, 2026
18	Inpieq	Partial evidence	Steenbergen, NetherlandsHQ checked Sep 17, 2026	1-10	9 contacts →
	Partial evidence “INPIEQ specializes in providing a wide range of maintenance for drilling, pile driving rigs and related construction equipment.” Source: RevenueBase Database · checked Sep 17, 2026
19	CK Loosbrock	Indirect evidence	Pernis - Rotterdam, NetherlandsHQ checked Sep 17, 2026	11-50	7 contacts →
	Indirect evidence “CK Loosbrock makes international industrial purchasing practical.” Source: RevenueBase Database · checked Sep 17, 2026
20	Aquatech Offshore	Partial evidence	Joure, NetherlandsHQ checked Sep 17, 2026	11-50	7 contacts →
	Partial evidence “Founded in February 2022, Aquatech Offshore expands the proven expertise of Aquatech Diving (est.” Source: RevenueBase Database · checked Sep 17, 2026
21	MPC Marine & Port	Indirect evidence	Breda, NetherlandsHQ checked Sep 17, 2026	11-50	5 contacts →
	Indirect evidence “MPC Marine & Port is a worldwide operating company.” Source: RevenueBase Database · checked Sep 17, 2026
22	H2offshore Engineering	Partial evidence	Rotterdam, NetherlandsHQ checked Sep 17, 2026	1-10	3 contacts →
	Partial evidence “H2Offshore Engineering is an engineering company serving the offshore energy industry.” Source: RevenueBase Database · checked Sep 17, 2026
23	Wellspec	Partial evidence	Apeldoorn, NetherlandsHQ checked Sep 17, 2026	11-50	3 contacts →
	Partial evidence “WellSpec delivers engineering and advisory services to drilling and well intervention organisations to help create value from their wells, across the full well lifecycle.” Source: RevenueBase Database · checked Sep 17, 2026
24	Weatherford Netherlands B.V	Indirect evidence	Den Helder, NetherlandsHQ checked Sep 17, 2026	11-50	1 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
25	Glomar Diving	Partial evidence	Den Helder, NetherlandsHQ checked Sep 17, 2026	11-50	1 contacts →
	Partial evidence “An international One-Stop-Shop subsea service provider to the Offshore Energy sector, specialising in onshore diving.” Source: RevenueBase Database · checked Sep 17, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: offshore drilling contractors. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names offshore drilling contractors.
Partial evidence: Its own public description names part of offshore drilling contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name offshore drilling contractors. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 52 offshore drilling contractors based in the Netherlands

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Offshore drilling contractors based in the Netherlands at a glance

As of Sep 17, 2026

32.0%Verified-email coverage

273.8Average contacts per company

11-50Median size (employees)

5.8%Largest-city concentration · Amsterdam

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for Netherlands, so it is reported there. Company counts and contact totals on this page are exact for Netherlands, over 52 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among offshore drilling contractors, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the Netherlands whose own description of what they do matches “offshore drilling contractors”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names offshore drilling contractors), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among offshore drilling contractors, and records with no verified work email. Companies headquartered outside Netherlands are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 4,562 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 17, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names offshore drilling contractors, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many offshore drilling contractors are there based in the Netherlands?

RevenueBase identified 52 offshore drilling contractors headquartered in the Netherlands as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

SBM Offshore, headquartered in Netherlands, tops this list with the largest team on record.

Which city has the most offshore drilling contractors?

Amsterdam leads with 3 headquartered companies, followed by Emmen (3) and Hoofddorp (3).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 4,562 verified decision-maker contacts tracked across these 52 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 17, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.