Company lists · Data refreshed September 2026

Top 25 Subsea intervention service providers based in the Netherlands

Name: Subsea intervention service providers based in the Netherlands
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 53 companies tracked

RevenueBase identified 53 subsea intervention service providers headquartered in the Netherlands as of September 2026 and tracks 1,809 professional contacts across them, including 517 with verified work emails. Rotterdam is the largest hub.

This list covers subsea intervention service providers 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 22, 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 22, 2026 86% judged on-target in blind review

53Companies

1,809Contacts tracked

517Verified emails

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The 25 largest subsea intervention service providers based in the Netherlands

Ranked by team size

Top 25 of 53 subsea intervention service providers based in the Netherlands, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to subsea intervention service providers: 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	N-Sea Group	Partial evidence	Dordrecht, NetherlandsHQ checked Sep 22, 2026	201-500	364 contacts →
	Partial evidence “N-Sea is an end-to-end subsea services provider.” Source: RevenueBase Database · checked Sep 22, 2026
2	DCN Diving	Partial evidence	Bergen Op Zoom, NetherlandsHQ checked Sep 22, 2026	201-500	344 contacts →
	Partial evidence “Beginning life in 1957 as the Vriens Diving Company, DCN has steadily grown in its niche market to become a significant global provider of engineered subsea solutions to the…” Source: RevenueBase Database · checked Sep 22, 2026
3	Glomar Offshore	Indirect evidence	Den Helder, NetherlandsHQ checked Sep 22, 2026	n/a	225 contacts →
	Indirect evidence “GloMar Offshore operates a diverse fleet of purpose built offshore support vessels, which meet exceedingly high standards in safety and operational capabilities.” Source: RevenueBase Database · checked Sep 22, 2026
4	Bluestream, An OEG Company	Partial evidence	Den Helder, NetherlandsHQ checked Sep 22, 2026	51-200	160 contacts →
	Partial evidence “Bluestream is now part of OEG's subsea service division.” Source: RevenueBase Database · checked Sep 22, 2026
5	Seacontractors	Indirect evidence	Flushing, NetherlandsHQ checked Sep 22, 2026	51-200	109 contacts →
	Indirect evidence “Seacontractors is the leading maritime service provider and anchor handling tug supplier (AHTS) worldwide, offering expert project support.” Source: RevenueBase Database · checked Sep 22, 2026
6	Well Services Group An Excellence Logging Company	Partial evidence	Emmen, NetherlandsHQ checked Sep 22, 2026	51-200	84 contacts →
	Partial evidence “An established provider of Well Intervention services to the Energy Industry.” Source: RevenueBase Database · checked Sep 22, 2026
7	Balance Point Control BPC	Indirect evidence	Emmen, NetherlandsHQ checked Sep 22, 2026	51-200	70 contacts →
	Indirect evidence “Balance Point Control (BPC) was established in in Emmen, Netherlands by a small group of colleagues, with the intent of providing more than just workover, snubbing and wireline…” Source: RevenueBase Database · checked Sep 22, 2026
8	VAN Stee Offshore	Indirect evidence	Harlingen, NetherlandsHQ checked Sep 22, 2026	51-200	70 contacts →
	Indirect evidence “Van Stee Offshore is a company specialised in supporting offshore, Oil & Gas, dredging- and Renewable energy projects worldwide.” Source: RevenueBase Database · checked Sep 22, 2026
9	Seamar	Indirect evidence	Den Helder, NetherlandsHQ checked Sep 22, 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 22, 2026
10	Seatools	Indirect evidence	Numansdorp, NetherlandsHQ checked Sep 22, 2026	51-200	56 contacts →
	Indirect evidence “Seatools helps its clients in the dredging and offshore energy business achieve higher workability and higher operational efficiency, both key to lowering cost and environmental…” Source: RevenueBase Database · checked Sep 22, 2026
11	DUC Marine Group	Partial evidence	Urk, NetherlandsHQ checked Sep 22, 2026	11-50	35 contacts →
	Partial evidence “GLOBAL COMMERCIAL DIVING, ROV, SUBSEA MARINE AND OFFSHORE CONSTRUCTION SERVICES DUC Marine Group offers services to the Offshore Construction, Renewables, Oil and Gas Construction…” Source: RevenueBase Database · checked Sep 22, 2026
12	Wӓrtsilӓ Underwater Services	Indirect evidence	Terneuzen, NetherlandsHQ checked Sep 22, 2026	51-200	22 contacts →
	Indirect evidence “Wӓrtsilӓ Underwater Services started its journey as an underwater service provider with a team of two divers in September 1993, specialising in repairing, overhauling and…” Source: RevenueBase Database · checked Sep 22, 2026
13	H2o Drones B.V	Indirect evidence	Arnhem, NetherlandsHQ checked Sep 22, 2026	11-50	21 contacts →
	Indirect evidence “H2O Drones is de pionier en Nederlandse marktleider op het gebied van innovatieve onderwaterinspecties met onderwaterdrones.” Source: RevenueBase Database · checked Sep 22, 2026
14	Maritime Construction Services BV	Indirect evidence	Amsterdam, NetherlandsHQ checked Sep 22, 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 22, 2026
15	Seascape Subsea BV	Partial evidence	Sleeuwijk, NetherlandsHQ checked Sep 22, 2026	1-10	12 contacts →
	Partial evidence “Seascape Subsea BV is a company specialized in the the development and production of innovative underwater equipment and commercial diving systems.” Source: RevenueBase Database · checked Sep 22, 2026
16	Tresios	Partial evidence	Capelle Aan Den Ijssel, NetherlandsHQ checked Sep 22, 2026	11-50	12 contacts →
	Partial evidence “TRESIOS is an international project management and construction company specialized in subsea construction and marine services.” Source: RevenueBase Database · checked Sep 22, 2026
17	Passer Lars	Indirect evidence	Rotterdam, NetherlandsHQ checked Sep 22, 2026	11-50	10 contacts →
	Indirect evidence “PASSER LARS provide our clients with a comprehensive service offering of specialist offshore equipment rental, in-house design engineering, project management capabilities, cable…” Source: RevenueBase Database · checked Sep 22, 2026
18	QCEAS	Indirect evidence	Beusichem, NetherlandsHQ checked Sep 22, 2026	11-50	10 contacts →
	Indirect evidence “At diving company Qceas, we go further where others stop.” Source: RevenueBase Database · checked Sep 22, 2026
19	Seabed BV	Indirect evidence	Amsterdam, NetherlandsHQ checked Sep 22, 2026	1-10	9 contacts →
	Indirect evidence “Specialist in underwater technology.” Source: RevenueBase Database · checked Sep 22, 2026
20	Aquatech Offshore	Indirect evidence	Joure, NetherlandsHQ checked Sep 22, 2026	11-50	7 contacts →
	Indirect evidence “Founded in February 2022, Aquatech Offshore expands the proven expertise of Aquatech Diving (est.” Source: RevenueBase Database · checked Sep 22, 2026
21	Seatec Subsea Systems B.V	Indirect evidence	Colijnsplaat, NetherlandsHQ checked Sep 22, 2026	11-50	6 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026
22	Duikbedrijf Schuite	Indirect evidence	Genemuiden, NetherlandsHQ checked Sep 22, 2026	1-10	6 contacts →
	Indirect evidence “Duikbedrijf Schuite is een professioneel duikbedrijf met jarenlange ervaring in werkzaamheden onderwater.” Source: RevenueBase Database · checked Sep 22, 2026
23	UPE	Indirect evidence	Steenbergen, NetherlandsHQ checked Sep 22, 2026	51-200	5 contacts →
	Indirect evidence “UPE is the result of a long-lasting relationship between highly skilled maritime repair and service companies.” Source: RevenueBase Database · checked Sep 22, 2026
24	Wals Diving & Marine Service	Indirect evidence	Ijmuiden, NetherlandsHQ checked Sep 22, 2026	11-50	5 contacts →
	Indirect evidence “Wals Diving & Marine Service provides a complete range of diving services including air and mixed gas diving techniques for construction and inspection, maintenance and repair…” Source: RevenueBase Database · checked Sep 22, 2026
25	Wellspec	Partial evidence	Apeldoorn, NetherlandsHQ checked Sep 22, 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 22, 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: subsea intervention service providers. 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 subsea intervention service providers.
Partial evidence: Its own public description names part of subsea intervention service providers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name subsea intervention service providers. 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 53 subsea intervention service providers based in the Netherlands

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Subsea intervention service providers based in the Netherlands at a glance

As of Sep 22, 2026

28.6%Verified-email coverage

34.1Average contacts per company

11-50Median size (employees)

7.5%Largest-city concentration · Rotterdam

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

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 53 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 subsea intervention service providers, 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 “subsea intervention service providers”. 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 subsea intervention service providers), 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 subsea intervention service providers, 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, 517 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 22, 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 subsea intervention service providers, 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 subsea intervention service providers are there based in the Netherlands?

RevenueBase identified 53 subsea intervention service providers 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?

N-Sea Group, headquartered in Jx, tops this list with the largest team on record.

Which city has the most subsea intervention service providers?

Rotterdam leads with 4 headquartered companies, followed by Al (3) and Beusichem (2).

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 517 verified decision-maker contacts tracked across these 53 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 22, 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.