Company lists · Data refreshed September 2026

Top 15 Underwater construction firms based in Sweden

Name: Underwater construction firms based in Sweden
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 27 companies tracked

RevenueBase identified 27 company matches for underwater construction firms associated with Sweden as of September 2026 and tracks 392 professional contacts across them, including 85 with verified work emails. Stockholm is the largest hub.

This list covers company matches for underwater construction firms associated with Sweden, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 19, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 19, 2026 How this list was built

27Companies

392Contacts tracked

85Verified emails

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The 15 largest underwater construction firms based in Sweden

Ranked by team size

Top 15 of 27 company matches for underwater construction firms based in Sweden, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 19, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	MMT	Exact match	Västra Frölunda, SwedenHQ recorded Sep 19, 2026	201-500	213 contacts →
	Exact match “We collect and process information to visualise the conditions of the seabed.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
2	Uw-Tech AB	Exact match	Falun, SwedenHQ recorded Sep 19, 2026	51-200	56 contacts →
	Exact match “Dykarbete - 3D Multibeam Ekolodning - ROV Undervattensrobot - Sugmuddring - 3D Undervattensfotogrammetri - 3D scanning av vattenfyllda tunnlar Kontakta oss gärna för en…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
3	SF Marina	Exact match	Kållekärr, SwedenHQ recorded Sep 19, 2026	201-500	29 contacts →
	Exact match “SF Marina is the undisputed world leader in floating concrete pontoons and breakwaters.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
4	Stockholms Vattenentreprenader AB	Exact match	Saltsjö-boo, SwedenHQ recorded Sep 19, 2026	51-200	14 contacts →
	Exact match “Sventab är ett av Sveriges största och ledande marina företag med säte i Stockholm och verksamhet från Mälarregionen och norrut.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
5	Dawab Sverige AB	Exact match	Gothenburg, SwedenHQ recorded Sep 19, 2026	11-50	11 contacts →
	Exact match “Vi är ett dykföretag med lång erfarenhet av alla typer av marina entreprenader och inspektioner.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
6	Svenska Tungdykargruppen	Exact match	Mora, SwedenHQ recorded Sep 19, 2026	11-50	9 contacts →
	Exact match “Svenska Tungdykargruppen är ett företag med rötterna i Dalarna, med grenar ut i Norden.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
7	Suab, Svenska Undervattensentreprenader AB	Exact match	Strängnäs, SwedenHQ recorded Sep 19, 2026	11-50	8 contacts →
	Exact match “SUAB utför alla slags arbeten under- eller i anslutning till vatten; byggnationer, reparationer, sprängningar, svetsarbeten, formsättning, rör- och kabelläggning för att nämna…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8	Dockstr	Exact match	Lidingö, SwedenHQ recorded Sep 19, 2026	11-50	7 contacts →
	Exact match “Dockstr is an equipment-centric supplier to the marine and underwater industries.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
9	Mats Wåhlin AB	Exact match	Järfälla, SwedenHQ recorded Sep 19, 2026	11-50	3 contacts →
	Exact match “Vi är specialister inom och bedriver entreprenadrörelse för dyk- och tunnelarbeten i stängda utrymmen och underjordsanläggningar med långa komplicerade inträngningsvägar.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10	ERA Marine AB	Exact match	Stockholm, SwedenHQ recorded Sep 19, 2026	1-10	3 contacts →
	Exact match “Era Marine performs underwater inspections with ROV, sonar and positioning equipment as well as multibeam, Side scan sonar for scanning and mapping of the bottom.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
11	Hamn OCH SJÖ Väst AB	Exact match	Hamburgsund, SwedenHQ recorded Sep 19, 2026	11-50	2 contacts →
	Exact match “Vattenbyggnad” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
12	SF Pontona	Exact match	Täby, SwedenHQ recorded Sep 19, 2026	11-50	1 contacts →
	Exact match “SF Pontona Sverige AB har byggt flytande betongkonstruktioner och betongbryggor sen 1918.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
13	Norrdyk AB	Exact match	Stäket, SwedenHQ recorded Sep 19, 2026	1-10	1 contacts →
	Exact match “NORRDYK AB utför dyktjänster inom anläggningsdykeri.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14	Havsarbete AB	Exact match	Stockholm, SwedenHQ recorded Sep 19, 2026	1-10	1 contacts →
	Exact match “Med hjälp av vårt mycket professionella och erfarna dykarlag kan vi erbjuda ett omfattande utbud av affärsmässiga dykningstjänster och marina civilingenjörstjänster.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
15	Önnereds Svets AB	Exact match	Vastra Frolunda, SwedenHQ recorded Sep 19, 2026	1-10	1 contacts →
	Exact match “Önnereds Svets är ett konstruktions och smidesföretag som främst är inriktat på den marina industrin.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “underwater construction firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 15 of 27 underwater construction firms based in Sweden

See the full list, filter by size, metro and specialty, and access 85 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Underwater construction firms based in Sweden at a glance

As of Sep 19, 2026

21.7%Verified-email coverage

14.5Average contacts per company

11-50Median size (employees)

18.5%Largest-city concentration · Stockholm

Sep 19, 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 Sweden, so it is reported there. Company counts and contact totals on this page are exact for Sweden, over 27 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with Sweden whose business descriptions match “underwater construction firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 85 professional contacts with verified work emails across the full matched dataset. 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 19, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “underwater construction firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many underwater construction firms are there based in Sweden?

RevenueBase identified 27 company matches for underwater construction firms associated with Sweden as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

MMT tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most underwater construction firms?

Stockholm leads with 5 company records, followed by Gothenburg (3) and Landskrona (2).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 85 professional contacts with verified work emails tracked across these 27 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 19, 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 SmartSearch, 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.