Company lists · Data refreshed September 2026

Top 25 Offshore decommissioning contractors based in Norway

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

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 63 companies tracked

RevenueBase identified 63 company matches for offshore decommissioning contractors associated with Norway as of September 2026 and tracks 3,971 professional contacts across them, including 1,048 with verified work emails. Stavanger is the largest hub.

This list covers company matches for offshore decommissioning contractors 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

63Companies

3,971Contacts tracked

1,048Verified emails

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The 25 largest offshore decommissioning contractors based in Norway

Ranked by team size

Top 25 of 63 company matches for offshore decommissioning contractors 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	Mhwirth	Exact match	Kristiansand, NorwayHQ recorded Sep 17, 2026	1,001-5,000	560 contacts →
	Exact match “October 2021.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
2	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
3	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
4	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
5	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
6	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
7	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
8	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
9	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
10	Moss Maritime	Exact match	Lysaker, NorwayHQ recorded Sep 17, 2026	51-200	65 contacts →
	Exact match “Moss Maritime provides leading technology and expertise within design and engineering services to the offshore energy sector as well as other ocean-based sectors.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
11	Technip India Limited	Exact match	Sandvika, NorwayHQ recorded Sep 17, 2026	51-200	59 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
12	AF Offshore Decom	Exact match	Oslo, NorwayHQ recorded Sep 17, 2026	51-200	54 contacts →
	Exact match “AF Offshore Decom is a leading company in environmentally friendly recycling of offshore assets.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
13	Semar AS	Exact match	Lysaker, NorwayHQ recorded Sep 17, 2026	11-50	52 contacts →
	Exact match “Semar was founded in 1980 as an independent engineering consultant firm devoted primarily to the offshore oil and gas industry.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
14	Petrolink AS	Exact match	NorwayHQ recorded Sep 17, 2026	51-200	50 contacts →
	Exact match “Petrolink operates platforms, subsea installations and floating production units offshore, oil and gas terminals onshore, refineries and process plants including power plants and…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
15	Subseadesign AS	Exact match	Lierbyen, NorwayHQ recorded Sep 17, 2026	51-200	47 contacts →
	Exact match “SubseaDesign (SD) is an engineering, design and fabrication company providing equipment and services for the oil and gas industry.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
16	RTS	Exact match	Åkrehamn, NorwayHQ recorded Sep 17, 2026	11-50	44 contacts →
	Exact match “RTS is a supplier of engineering solutions, equipment rental, product sales and personnel supply.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17	Subseapartner AS	Exact match	Haugesund, NorwayHQ recorded Sep 17, 2026	11-50	44 contacts →
	Exact match “SubseaPartner is a leading diving contractor in the shallow-deep segment.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
18	Swire Seabed	Exact match	Bergen, NorwayHQ recorded Sep 17, 2026	51-200	40 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 · Sep 17, 2026 · View company records in RevenueBase
19	Control Cutter	Exact match	Tananger, NorwayHQ recorded Sep 17, 2026	11-50	28 contacts →
	Exact match “Control Cutter is a global decommissioning full-service provider, delivering patented cutting solutions across both topside and subsea removal, wherever offshore assets reach end…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20	Envirex AS	Exact match	Bryne, NorwayHQ recorded Sep 17, 2026	11-50	28 contacts →
	Exact match “Envirex’ engineering expertise delivers a wide range of products, systems and services for the subsea oil and gas industry.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21	Techno Dive	Exact match	Avaldsnes, NorwayHQ recorded Sep 17, 2026	11-50	25 contacts →
	Exact match “Techno Dive is your partner for Safe and Efficient Subsea Work.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
22	Wellpartner AS	Exact match	Tananger, NorwayHQ recorded Sep 17, 2026	51-200	23 contacts →
	Exact match “WellPartner AS is a service company that delivers technical expertise and high quality equipment and services within subsea drilling, completion and intervention operations.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23	Stinger Technology AS	Exact match	Stavanger, NorwayHQ recorded Sep 17, 2026	11-50	23 contacts →
	Exact match “Stinger Technology AS is an innovative solution provider focusing on underwater wells monitoring, seabed surveys and jacket inspections.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24	Sjøentreprenøren AS	Exact match	Bergen, NorwayHQ recorded Sep 17, 2026	11-50	22 contacts →
	Exact match “Vi utfører oppdrag innen mudring, sprenging, riving, konstruksjon, inspeksjon og mye mer under vann.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
25	Deep C	Exact match	Kristiansund, NorwayHQ recorded Sep 17, 2026	11-50	21 contacts →
	Exact match “Deep C provides Seabed Intervention Services that simply fit together.” 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 decommissioning contractors”. 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 63 offshore decommissioning contractors based in Norway

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Offshore decommissioning contractors based in Norway at a glance

As of Sep 17, 2026

26.4%Verified-email coverage

63.0Average contacts per company

11-50Median size (employees)

14.3%Largest-city concentration · Stavanger

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

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 63 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 decommissioning contractors” 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 1,048 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 decommissioning contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many offshore decommissioning contractors are there based in Norway?

RevenueBase identified 63 company matches for offshore decommissioning contractors 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?

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

Which city has the most offshore decommissioning contractors?

Stavanger leads with 9 company records, followed by Bergen (5) and Haugesund (4).

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 1,048 professional contacts with verified work emails tracked across these 63 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.