Company lists · Data refreshed September 2026

Top 25 Marine geotechnical firms based in Belgium

RevenueBase identified 64 marine geotechnical firms headquartered in Belgium as of September 2026 and tracks 5,693 professional contacts across them, including 3,114 with verified work emails. Antwerp is the largest hub.

This list covers marine geotechnical firms headquartered in Belgium, 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 20, 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 20, 2026 86% judged on-target in blind review
64Companies
5,693Contacts tracked
3,114Verified emails
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The 25 largest marine geotechnical firms based in Belgium

Ranked by team size
Top 25 of 64 marine geotechnical firms based in Belgium, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to marine geotechnical firms: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceBeveren-kruibeke-zwijndrecht, BelgiumHQ checked Sep 20, 20265,001-10,0004,395 contacts →

Partial evidence

“DEME (Euronext Brussels: DEME) is a leading contractor in the fields of offshore energy, dredging and marine infrastructure, and environmental remediation.”

Source: RevenueBase Database · checked Sep 20, 2026
2Strong evidenceZwevegem, BelgiumHQ checked Sep 20, 2026501-1,000374 contacts →

Strong evidence

“GEOxyz is an international maritime data company specialized in hydrographic, geophysical, geotechnical and topographical surveys, site investigations, renewable energy support…”

Source: RevenueBase Database · checked Sep 20, 2026
3Partial evidenceMilmort, BelgiumHQ checked Sep 20, 202651-200146 contacts →

Partial evidence

“G-TEC provides marine and land based geophysical surveys.”

Source: RevenueBase Database · checked Sep 20, 2026
4Indirect evidenceBeerse, BelgiumHQ checked Sep 20, 202651-20080 contacts →

Indirect evidence

“We are DISA International.”

Source: RevenueBase Database · checked Sep 20, 2026
5Partial evidenceAntwerp, BelgiumHQ checked Sep 20, 202651-20067 contacts →

Partial evidence

“SCALDIS – Lifting at a higher level Founded in 1995, SCALDIS has grown into a global leader in marine contracting, specializing in complex lifting operations, offering its…”

Source: RevenueBase Database · checked Sep 20, 2026
6Indirect evidenceOostende, BelgiumHQ checked Sep 20, 202651-20040 contacts →

Indirect evidence

“Soetaert is an expert in foundation techniques, based in Ostend, Belgium.”

Source: RevenueBase Database · checked Sep 20, 2026
7Partial evidenceBrussels, BelgiumHQ checked Sep 20, 2026201-50038 contacts →

Partial evidence

“Group De Cloedt specialises in Aggregates (marine sand & gravel, quarry materials), Dredging (Sea and canals), Environment and Logistics (bulk carriers, barges) and offers a large…”

Source: RevenueBase Database · checked Sep 20, 2026
8Indirect evidenceZaventem, BelgiumHQ checked Sep 20, 202651-20036 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 20, 2026
9Indirect evidenceGanshoren, BelgiumHQ checked Sep 20, 202611-5034 contacts →

Indirect evidence

“Founded in 1971, Geosonda is one of the main pioneers in soil mechanics in Belgium.”

Source: RevenueBase Database · checked Sep 20, 2026
10Indirect evidenceSint-eloois-winkel, BelgiumHQ checked Sep 20, 202651-20033 contacts →

Indirect evidence

“Al sinds 1973 bouwt Group Verbeke aan een intussen indrukwekkende reputatie als grondmechanisch bureau en erkend bodemsaneringsdeskundige Type I.”

Source: RevenueBase Database · checked Sep 20, 2026
11Indirect evidenceBeveren, BelgiumHQ checked Sep 20, 202611-5024 contacts →

Indirect evidence

“K&C Diving was founded in 2009 as a diving company located in the port of Antwerp.”

Source: RevenueBase Database · checked Sep 20, 2026
12Indirect evidenceGent, BelgiumHQ checked Sep 20, 202611-5011 contacts →

Indirect evidence

“FLEXIBEL IN STABILITEIT STABILITEITSSTUDIES Wij aanvaarden studies voor grote en kleine werken.”

Source: RevenueBase Database · checked Sep 20, 2026
13Indirect evidenceOostende, BelgiumHQ checked Sep 20, 20261-1011 contacts →

Indirect evidence

“SUBMAR BVBA is specialized in carrying out professional diving work, high-tech cutting and underwater hull cleaning.”

Source: RevenueBase Database · checked Sep 20, 2026
14Indirect evidenceFernelmont, BelgiumHQ checked Sep 20, 202611-509 contacts →

Indirect evidence

“iTER Solutions is an architecture & planning company based out of 24 Rue du Tronquoy, ZI, Nov, Fernelmont, Belgium.”

Source: RevenueBase Database · checked Sep 20, 2026
15Partial evidenceAntwerp, BelgiumHQ checked Sep 20, 202611-509 contacts →

Partial evidence

“The IMCS Group of Companies, with 20 offices worldwide, aims to provide the international shipping and maritime industry with high quality surveys and services on a 24/7 basis.”

Source: RevenueBase Database · checked Sep 20, 2026
16Indirect evidenceOttignies, BelgiumHQ checked Sep 20, 20261-109 contacts →

Indirect evidence

“GeoIntel’s purpose is to transform data into knowledge.”

Source: RevenueBase Database · checked Sep 20, 2026
17Partial evidenceBruges, BelgiumHQ checked Sep 20, 202611-508 contacts →

Partial evidence

“SEASOILS is a Belgian based professional engineering services firm, specialising in the fields of light Geotechnics, Environment and hydro surveys.”

Source: RevenueBase Database · checked Sep 20, 2026
18Partial evidenceMerksem, BelgiumHQ checked Sep 20, 20261-105 contacts →

Partial evidence

“We are dedicated and multi-disciplinary surveyors/experts in both marine and non-marine sectors.”

Source: RevenueBase Database · checked Sep 20, 2026
19Indirect evidenceAntwerp, BelgiumHQ checked Sep 20, 202611-504 contacts →

Indirect evidence

“Ingenieursbureau bouwkunde, civiele techniek en geotechniek met meer dan 40 jaar ervaring in de uitvoering van industriële projecten, infrastructuurwerken met activiteiten…”

Source: RevenueBase Database · checked Sep 20, 2026
20Indirect evidenceMettet, BelgiumHQ checked Sep 20, 202611-504 contacts →

Indirect evidence

“Bureau d'études en stabilité, Essais de sol, Tests de perméabilité, Essais à la plaque, Pose de piézomètre, CertiBEau”

Source: RevenueBase Database · checked Sep 20, 2026
21Indirect evidenceLokeren, BelgiumHQ checked Sep 20, 202611-504 contacts →

Indirect evidence

“Studiebureel Sondex is een vaste waarde wanneer het aankomt op geotechnisch onderzoek.”

Source: RevenueBase Database · checked Sep 20, 2026
22Indirect evidenceHoeilaart, BelgiumHQ checked Sep 20, 202611-503 contacts →

Indirect evidence

“Bij Advison by Studibo helpen we bouwheren, architecten en ingenieurs om de ondergrond van hun project echt te begrijpen.”

Source: RevenueBase Database · checked Sep 20, 2026
23Partial evidenceWaregem, BelgiumHQ checked Sep 20, 20261-103 contacts →

Partial evidence

“LLEC is specialized in civil engineering (structural and geotechnical analyses) with a specific expertise and focus on port, river and hydraulic engineering.”

Source: RevenueBase Database · checked Sep 20, 2026
24Partial evidenceBrussel - Bruxelles, BelgiumHQ checked Sep 20, 20261-103 contacts →

Partial evidence

Geotechnica is een onafhankelijk bedrijf, gespecialiseerd in grondonderzoek en funderingsadvies.”

Source: RevenueBase Database · checked Sep 20, 2026
25Partial evidenceAntwerp, BelgiumHQ checked Sep 20, 20261-102 contacts →

Partial evidence

“With a combined experience of over 30+ years as marine surveyors, we are able to offer you a wide range of services with focus on a professional and timely response to your needs.”

Source: RevenueBase Database · checked Sep 20, 2026

Showing 25 of 64 marine geotechnical firms based in Belgium

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Marine geotechnical firms based in Belgium at a glance

As of Sep 20, 2026
54.7%Verified-email coverage
89.0Average contacts per company
1-10Median size (employees)
7.8%Largest-city concentration · Antwerp
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
37
11-50
13
51-200
9
201-500
2
501-1,000
1
1,001-5,000
1
5,001-10,000
1

Email recency for this list is measured worldwide rather than for Belgium, so it is reported there. Company counts and contact totals on this page are exact for Belgium, over 64 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 geotechnical 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 Belgium whose own description of what they do matches “marine geotechnical 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 geotechnical 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 geotechnical firms, and records with no verified work email. Companies headquartered outside Belgium 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, 3,114 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 20, 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 geotechnical 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 geotechnical firms are there based in Belgium?

RevenueBase identified 64 marine geotechnical firms headquartered in Belgium 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?

Deme Group, headquartered in Beveren-Kruibeke-Zwijndrecht, tops this list with the largest team on record.

Which city has the most marine geotechnical firms?

Antwerp leads with 5 headquartered companies, followed by Fernelmont (2) and Gent (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 3,114 verified decision-maker contacts tracked across these 64 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 20, 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.