Company lists · Data refreshed September 2026

Top 25 Offshore construction companies based in Norway

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

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 207 companies tracked

RevenueBase identified 207 company matches for offshore construction companies associated with Norway as of September 2026 and tracks 11,202 professional contacts across them, including 3,413 with verified work emails. Oslo is the largest hub.

This list covers company matches for offshore construction companies 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 September 17, 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 17, 2026 How this list was built

207Companies

11,202Contacts tracked

3,413Verified emails

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The 25 largest offshore construction companies based in Norway

Ranked by team size

Top 25 of 207 company matches for offshore construction companies based in Norway, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 17, 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	DOF	Exact match	Bergen, NorwayHQ recorded Sep 17, 2026	5,001-10,000	2,942 contacts →
	Exact match “With a multi-national workforce of over 5,700 personnel, DOF is an international group of companies which owns and operates a fleet of modern offshore/subsea vessels, with an…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
2	Kaefer Norway	Exact match	Stavanger, NorwayHQ recorded Sep 17, 2026	1,001-5,000	663 contacts →
	Exact match “KAEFER is a part of the KAEFER Group, one of Europe’s largest construction companies.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
3	Island Offshore	Exact match	Ulsteinvik, NorwayHQ recorded Sep 17, 2026	501-1,000	501 contacts →
	Exact match “Island Offshore - The Island Offshore Group is a leading provider of services to the offshore industry ranging from Platform Supply, Walk-to-work and Anchor Handling to Advanced…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
4	Global Maritime	Exact match	Stavanger, NorwayHQ recorded Sep 17, 2026	201-500	472 contacts →
	Exact match “Global Maritime delivers integrated marine solutions for a changing offshore world.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
5	Reach Subsea	Exact match	Haugesund, NorwayHQ recorded Sep 17, 2026	201-500	454 contacts →
	Exact match “Reach Subsea ASA (“Reach Subsea”, “Reach” or “the Group”) is a prominent offshore contractor that offer high quality solutions and technology to clients in need of ocean data and…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
6	Eidesvik Offshore ASA	Exact match	Langevag, NorwayHQ recorded Sep 17, 2026	501-1,000	308 contacts →
	Exact match “Offshore Shipping Company.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
7	Ocean Installer	Exact match	Stavanger, NorwayHQ recorded Sep 17, 2026	201-500	299 contacts →
	Exact match “Ocean Installer is a leading marine construction company that specializes in offshore installation services with more than 15 years of experience delivering large and complex…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8	REM Offshore	Exact match	Fosnavåg, NorwayHQ recorded Sep 17, 2026	201-500	288 contacts →
	Exact match “About Rem Offshore Rem Offshore is a new company with old roots – tracing back to 1978 with fishery activities in Norway, Rem Offshore organisation today operates worldwide, with…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
9	Linjebygg AS	Exact match	Molde, NorwayHQ recorded Sep 17, 2026	201-500	261 contacts →
	Exact match “Linjebygg provides LIFE CYCLE EXTENSION.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
10	Akofs Offshore	Exact match	Oslo, NorwayHQ recorded Sep 17, 2026	201-500	233 contacts →
	Exact match “AKOFS Offshore is a global provider of vessel based subsea well construction and intervention services to the oil and gas industry.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
11	Omega Subsea	Exact match	Bergen, NorwayHQ recorded Sep 17, 2026	201-500	209 contacts →
	Exact match “Omega Subsea delivers ROV, survey, engineering, and subsea project services to the global offshore industry.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
12	Imenco	Exact match	Aksdal, NorwayHQ recorded Sep 17, 2026	201-500	199 contacts →
	Exact match “Imenco is a group of companies working mainly in five main business areas: Offshore oil & gas, offshore renewables, aquaculture, marine & naval and industrial.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
13	Yabimo	Exact match	Stord, NorwayHQ recorded Sep 17, 2026	1,001-5,000	192 contacts →
	Exact match “We are YABIMO, experts in energy, shipbuilding, and industrial areas.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
14	Norwegian Group	Exact match	Volda, NorwayHQ recorded Sep 17, 2026	201-500	155 contacts →
	Exact match “Norwegian Group AS is a holding company that has a group with several companies under it.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
15	BOA Offshore	Exact match	Trondheim, NorwayHQ recorded Sep 17, 2026	51-200	150 contacts →
	Exact match “BOA is a family business, which has been providing offshore services since the 70's.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
16	NLI AS	Exact match	Vear, NorwayHQ recorded Sep 17, 2026	201-500	129 contacts →
	Exact match “NLI gruppen er en komplett leverandør av engineering, fabrikasjon, installasjons- og vedlikeholdstjenester med nøkkelkompetanse på stålkonstruksjoner, rør, overflatebehandling og…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17	Dr.Techn. Olav Olsen AS	Exact match	Lysaker, NorwayHQ recorded Sep 17, 2026	51-200	125 contacts →
	Exact match “Consulting, design and engineering for offshore, coastal and civil construction.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
18	Havila Subsea & Renewables	Exact match	Aalesund, NorwayHQ recorded Sep 17, 2026	201-500	120 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 · Sep 17, 2026 · View company records in RevenueBase
19	Island Drilling Company AS	Exact match	Sandsli, NorwayHQ recorded Sep 17, 2026	51-200	114 contacts →
	Exact match “Island Drilling was established in 2006 by industry veterans and Island Offshore, the leading global player in well intervention, to build and own special purpose semi-submersible…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20	Sevan Deepwater Technology	Exact match	Bergen, NorwayHQ recorded Sep 17, 2026	11-50	108 contacts →
	Exact match “Sevan Deepwater Technology is a specialized marine engineering and design house.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21	Techouse AS	Exact match	Sandnes, NorwayHQ recorded Sep 17, 2026	51-200	106 contacts →
	Exact match “Techouse is a leader in the provision of offshore platform processing equipment and services to the international oil & gas industry.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
22	NYMO	Exact match	Grimstad, NorwayHQ recorded Sep 17, 2026	201-500	105 contacts →
	Exact match “Nymo is a full-service engineering, procurement and construction company within the oil & gas and process industry.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23	Westcon Yards AS	Exact match	Vindafjord, NorwayHQ recorded Sep 17, 2026	201-500	103 contacts →
	Exact match “Westcon Yards AS is a modern shipyard with a main focus on offshore service, shipbuilding, rig and ship repair.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24	Havfram	Exact match	Oslo, NorwayHQ recorded Sep 17, 2026	51-200	88 contacts →
	Exact match “Havfram is a pure play offshore wind company, providing transport and installation services to the offshore wind sector as an owner and operator of Wind Turbine Installation…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
25	Marine Aluminium AS	Exact match	Avaldsnes, NorwayHQ recorded Sep 17, 2026	51-200	79 contacts →
	Exact match “Marine Aluminium AS (MA) is one of the world’s leading companies within engineering, design and fabrication of aluminium structures and products for the offshore and shipbuilding…” Recorded in the RevenueBase company graph · Sep 17, 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 “offshore construction companies”. 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 25 of 207 offshore construction companies based in Norway

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Offshore construction companies based in Norway at a glance

As of Sep 17, 2026

30.5%Verified-email coverage

54.1Average contacts per company

11-50Median size (employees)

8.7%Largest-city concentration · Oslo

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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 207 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 “offshore construction companies” 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 3,413 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 17, 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 “offshore construction companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many offshore construction companies are there based in Norway?

RevenueBase identified 207 company matches for offshore construction companies associated with Norway 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?

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

Which city has the most offshore construction companies?

Oslo leads with 18 company records, followed by Stavanger (18) and Haugesund (8).

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 3,413 professional contacts with verified work emails tracked across these 207 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 17, 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.