Company lists · Data refreshed September 2026
Top 25 Marine and subsea consulting firms based in Rotterdam, Netherlands
RevenueBase identified 62 marine and subsea consulting firms headquartered in Rotterdam, Netherlands as of September 2026 and tracks 5,663 professional contacts across them, including 2,348 with verified work emails. Across the Netherlands, Rotterdam is the largest hub for this category.
This list covers marine and subsea consulting firms headquartered in Rotterdam, 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 28, 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.
The 25 largest marine and subsea consulting firms based in Rotterdam, Netherlands
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 94 contacts → | ||||
Indirect evidence “The Offshore Partners provides technical and project management services for vessel new-builds, conversions and R&M projects, as well as for installation projects in offshore…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 2 | 89 contacts → | ||||
Partial evidence “Vuyk Engineering is an independent Maritime Design House specialising in high-quality engineering solutions across four key disciplines: ship design and conversion, methods…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 3 | 59 contacts → | ||||
Indirect evidence “Rotterdam Engineering is een toonaangevend ingenieurs- en adviesbureau met een specialisatie in de ontwikkeling en realisatie van ondergrondse transportleidingsystemen.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 4 | 37 contacts → | ||||
Indirect evidence “ROG, your partner for Dockside and Onsite services!” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 5 | 22 contacts → | ||||
Indirect evidence “Bij Maasstad ingenieurs zetten we onze kennis en ervaring in voor opdrachtgevers uit de sectoren energie, infra en industrie.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 6 | 16 contacts → | ||||
Partial evidence “Mocean is a fully independent marine engineering consultancy company.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 7 | 13 contacts → | ||||
Indirect evidence “Duik‑ en Bergingsbedrijf W.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 8 | 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 28, 2026Thanks. The Data Team will review it. | |||||
| 9 | 7 contacts → | ||||
Indirect evidence “MCSI Rotterdam is active as independent Brokers and Contractors for already more than 35 years!” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 10 | 6 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 11 | 5 contacts → | ||||
Indirect evidence “XPRTHUB is an independent organisation, specialising in consultancy, engineering, project support & recruitment in the offshore energy industry.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 12 | 5 contacts → | ||||
Strong evidence “We are surveyors and consulting engineers who serve in the field of marine, non-marine engineering, transport and cargo.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 13 | 5 contacts → | ||||
Partial evidence “We are an independent marine contractor, specialised in marine logistics services tailored to the offshore wind industry.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 14 | 4 contacts → | ||||
Indirect evidence “Smart Veritas is an independent Offshore Engineering and NDT company that provides services to clients internationally.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 15 | 3 contacts → | ||||
Indirect evidence “H2Offshore Engineering is an engineering company serving the offshore energy industry.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 16 | 3 contacts → | ||||
Indirect evidence “Navaltex Technology Group is client oriented international company comprising a range of enterprises acting as a global provider of integrated services, products and solutions for…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 17 | 3 contacts → | ||||
Indirect evidence “Marstrat is a strategic consultancy firm based in Rotterdam, the Netherlands.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 18 | 3 contacts → | ||||
Indirect evidence “I am involved and passionate independant entrepeneur with a vast international experience.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 19 | 3 contacts → | ||||
Indirect evidence “Raising the bar in Decommissioning Triton Offshore can assist companies with their offshore projects by delivering engineering support on/offshore where we focus mainly on the…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 20 | 2 contacts → | ||||
Partial evidence “Doldrums is een jong onafhankelijk expertisebureau, met ervaren nautische en technische experts, dat een breed scala aan technisch maritieme diensten aanbiedt.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 21 | 2 contacts → | ||||
Partial evidence “Dredging, fluvial and marine works.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 22 | 2 contacts → | ||||
Indirect evidence “SafePort Service & Inspection provides independent inspection, test and service of mooring equipment as well as all ship to shore interface equipment such as bollards, quick…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 23 | 1 contacts → | ||||
Indirect evidence “HM Holland Realty B.V.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 24 | 1 contacts → | ||||
Indirect evidence “With a proven track record, we provide a broad variety of services: Sale & Purchase (S&P), valuations, chartering, port agency, consultancy and green ship recycling.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 25 | 1 contacts → | ||||
Partial evidence “Rosma-Marine is the independent player in Vessel Management, Technical Superintendency and Marine Engineering!” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
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: marine and subsea consulting firms. 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 marine and subsea consulting firms.
- Partial evidence
- Its own public description names part of marine and subsea consulting firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name marine and subsea consulting firms. 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 62 marine and subsea consulting firms based in Rotterdam, Netherlands
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Marine and subsea consulting firms based in Rotterdam, Netherlands at a glance
As of Sep 28, 2026Companies by employee count
Email recency for this list is measured across the whole Netherlands list rather than for Rotterdam, so it is reported there. Company counts and contact totals on this page are exact for Rotterdam, over 62 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 marine and subsea consulting firms, 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 Rotterdam, Netherlands whose own description of what they do matches “marine and subsea consulting firms”. 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 marine and subsea consulting firms), 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 marine and subsea consulting firms, and records with no verified work email. Companies headquartered outside Rotterdam 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, 2,348 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 28, 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 marine and subsea consulting firms, 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 marine and subsea consulting firms are there based in Rotterdam, Netherlands?
RevenueBase identified 62 marine and subsea consulting firms headquartered in Rotterdam, 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?
The Offshore Partners BV, headquartered in Rotterdam, tops this list with the largest team on record.
Which city in the Netherlands has the most marine and subsea consulting firms?
Rotterdam leads the Netherlands with 62 headquartered companies, followed by Amsterdam (18) and Dordrecht (10).
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 2,348 verified decision-maker contacts tracked across these 62 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 28, 2026.
Ready to reach these companies? Verified emails and direct dials for all 62 marine and subsea consulting firms based in Rotterdam, Netherlands. Start with a free account, no credit card.
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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.
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