Company lists · Data refreshed November 2026

Top 24 Underwater construction services based in Norway

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

Compiled by the RevenueBase Data Team Data refreshed Nov 3, 2026 48 companies tracked

RevenueBase identified 48 company matches for underwater construction services associated with Norway as of November 2026 and tracks 1,032 professional contacts across them, including 201 with verified work emails. Haugesund is the largest hub.

This list covers company matches for underwater construction services associated with Norway, 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 November 3, 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 Nov 3, 2026 How this list was built

48Companies

1,032Contacts tracked

201Verified emails

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The 24 largest underwater construction services based in Norway

Ranked by team size

Top 24 of 48 company matches for underwater construction services based in Norway, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 3, 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	Havila Subsea & Renewables	Exact match	Aalesund, NorwayHQ recorded Nov 3, 2026	201-500	134 contacts →
	Exact match “Havila Subsea & Renewables operates an advanced fleet of vessels dedicated to Diving, Offshore Inspection, Repair, and Maintenance (IRM), as well as Construction.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
2	Dr.Techn. Olav Olsen AS	Exact match	Lysaker, NorwayHQ recorded Nov 3, 2026	51-200	132 contacts →
	Exact match “Consulting, design and engineering for offshore, coastal and civil construction.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
3	Abyss AS	Exact match	Kristiansund, NorwayHQ recorded Nov 3, 2026	201-500	106 contacts →
	Exact match “Abyss utfører alle tjenester på sjøen - over og under vann.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
4	Subseapartner AS	Exact match	Haugesund, NorwayHQ recorded Nov 3, 2026	11-50	44 contacts →
	Exact match “SubseaPartner is a leading diving contractor in the shallow-deep segment.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
5	Swire Seabed	Exact match	Bergen, NorwayHQ recorded Nov 3, 2026	51-200	43 contacts →
	Exact match “Swire Seabed provides a highly flexible range of integrated subsea services to the global Oil & Gas and renewables industries.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
6	Innova	Exact match	Sandnes, NorwayHQ recorded Nov 3, 2026	51-200	40 contacts →
	Exact match “Established in 1997, Innova is a leading supplier of services, equipment and solutions to the international underwater industry.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
7	Otech Marine Services	Exact match	Haugesund, NorwayHQ recorded Nov 3, 2026	11-50	31 contacts →
	Exact match “Diving & maintenance contractor operating worldwide.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
8	Remotion AS	Exact match	Sandnes, NorwayHQ recorded Nov 3, 2026	11-50	28 contacts →
	Exact match “Remotion delivers unique hull repair, maintenance and inspection services based on our technology of magnetic robots (M-ROV).” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
9	RAKON	Exact match	Stavanger, NorwayHQ recorded Nov 3, 2026	11-50	26 contacts →
	Exact match “Rakon offers contractor and consulting services with a high focus on fit for purpose, safe- and cost-effective solutions.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
10	Samba Marin AS	Exact match	Lepsøy, NorwayHQ recorded Nov 3, 2026	11-50	26 contacts →
	Exact match “Vi leverer tjenester innen Havbruk, Offshore, Bygg- og Anlegg” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
11	Sjøentreprenøren AS	Exact match	Bergen, NorwayHQ recorded Nov 3, 2026	11-50	26 contacts →
	Exact match “Vi utfører oppdrag innen mudring, sprenging, riving, konstruksjon, inspeksjon og mye mer under vann.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
12	Techno Dive	Exact match	Avaldsnes, NorwayHQ recorded Nov 3, 2026	11-50	26 contacts →
	Exact match “Techno Dive is your partner for Safe and Efficient Subsea Work.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
13	Rexor Marine AS	Exact match	Tananger, NorwayHQ recorded Nov 3, 2026	51-200	24 contacts →
	Exact match “Rexor Marine er en annerledes og spennende aktør innen arbeidsdykking, havnearbeid og bemanning i regionen.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
14	Submara	Exact match	Sætre, NorwayHQ recorded Nov 3, 2026	201-500	17 contacts →
	Exact match “Submara is one of Norway’s leading providers of underwater services, delivering commercial diving, ROV, and survey solutions across the country.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
15	Submara Prosjekt AS	Exact match	Tofte, NorwayHQ recorded Nov 3, 2026	11-50	17 contacts →
	Exact match “Dykkerteknikk AS ble etablert i 1976 og er et godt etablert selskap innen undervannsarbeid og marine operasjoner.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
16	Valen Marina AS	Exact match	Kolltveit, NorwayHQ recorded Nov 3, 2026	11-50	17 contacts →
	Exact match “Valen Marina AS er en sjøentreprenør som har sitt virke innenfor dykke- og ROV tjenester.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
17	Njord Aqua AS	Exact match	Tysnes, NorwayHQ recorded Nov 3, 2026	1-10	10 contacts →
	Exact match “Njord Aqua AS er et undervannsservice selskap rettet mot havbruk og kystnær industri.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
18	Nærøysund Aquaservice AS	Exact match	Rørvik, NorwayHQ recorded Nov 3, 2026	11-50	9 contacts →
	Exact match “Nærøysund Aquaservice AS er en allsidig og veldrevet bedrift i Nærøysund kommune i Trøndelag som selger tjenester og produkter, hovedsakelig til havbruksnæringen, men også til…” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
19	Finnsnes Dykk & Anleggsservice AS	Exact match	Finnsnes, NorwayHQ recorded Nov 3, 2026	51-200	7 contacts →
	Exact match “Finnsnes Dykk & Anleggservice AS er en maritim entreprenør som leverer tjenester til havbruksnæringen, entreprenører og det offentlige.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
20	2marine AS	Exact match	Honningsvåg, NorwayHQ recorded Nov 3, 2026	11-50	6 contacts →
	Exact match “MARINE CONTRACTING - MARINE INFRASTRUCTURE - MARINE SERVICE - SEABED SOLUTIONS - PIPELINES - MARINE CREW - TRANSPORT - Cargo” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
21	Amundsen Diving AS	Exact match	Rubbestadneset, NorwayHQ recorded Nov 3, 2026	1-10	5 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
22	Einar Sørensen Maskinentreprenør AS	Exact match	Tromsø, NorwayHQ recorded Nov 3, 2026	1-10	3 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
23	Telemark Seaworx	Exact match	Langesund, NorwayHQ recorded Nov 3, 2026	1-10	3 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
24	Buskerud Dykkerservice	Exact match	Kongsberg, NorwayHQ recorded Nov 3, 2026	11-50	2 contacts →
	Exact match “Buskerud Dykkerservice er din pålitelige partner for et bredt spekter av undervannstjenester.” Recorded in the RevenueBase company graph · Nov 3, 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 services”. 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 24 of 48 underwater construction services based in Norway

See the full list, filter by size, metro and specialty, and access 201 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Underwater construction services based in Norway at a glance

As of Nov 3, 2026

19.5%Verified-email coverage

21.5Average contacts per company

11-50Median size (employees)

8.3%Largest-city concentration · Haugesund

Nov 3, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

10001+

Email recency for this list is measured worldwide rather than for Norway, so it is reported there. Company counts and contact totals on this page are exact for Norway, over 48 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 Norway whose business descriptions match “underwater construction services” 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 201 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 November 3, 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 services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many underwater construction services are there based in Norway?

RevenueBase identified 48 company matches for underwater construction services associated with Norway as of November 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?

Havila Subsea & Renewables tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most underwater construction services?

Haugesund leads with 4 company records, followed by Bergen (3) and Lysaker (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 201 professional contacts with verified work emails tracked across these 48 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 November 3, 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.