Company lists · Data refreshed November 2026

Top 25 Subsea maintenance services based in Norway

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

Compiled by the RevenueBase Data Team Data refreshed Nov 2, 2026 159 companies tracked

RevenueBase identified 159 company matches for subsea maintenance services associated with Norway as of November 2026 and tracks 10,443 professional contacts across them, including 2,828 with verified work emails. Stavanger is the largest hub.

This list covers company matches for subsea maintenance 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 2, 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 2, 2026 How this list was built

159Companies

10,443Contacts tracked

2,828Verified emails

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The 25 largest subsea maintenance services based in Norway

Ranked by team size

Top 25 of 159 company matches for subsea maintenance services based in Norway, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 2, 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 Nov 2, 2026	5,001-10,000	3,269 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 · Nov 2, 2026 · View company records in RevenueBase
2	Prosafe	Exact match	N-4068 Stavanger, NorwayHQ recorded Nov 2, 2026	n/a	654 contacts →
	Exact match “Prosafe is a leading owner and operator of semi-submersible accommodation vessels.” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
3	Island Offshore	Exact match	Ulsteinvik, NorwayHQ recorded Nov 2, 2026	501-1,000	532 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 · Nov 2, 2026 · View company records in RevenueBase
4	Reach Subsea	Exact match	Haugesund, NorwayHQ recorded Nov 2, 2026	201-500	481 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 · Nov 2, 2026 · View company records in RevenueBase
5	Global Maritime	Exact match	Stavanger, NorwayHQ recorded Nov 2, 2026	201-500	463 contacts →
	Exact match “Global Maritime delivers integrated marine solutions for a changing offshore world.” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
6	Eidesvik Offshore ASA	Exact match	Langevag, NorwayHQ recorded Nov 2, 2026	501-1,000	313 contacts →
	Exact match “Offshore Shipping Company.” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
7	Akofs Offshore	Exact match	Oslo, NorwayHQ recorded Nov 2, 2026	201-500	246 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 · Nov 2, 2026 · View company records in RevenueBase
8	Omega Subsea	Exact match	Bergen, NorwayHQ recorded Nov 2, 2026	201-500	244 contacts →
	Exact match “Omega Subsea delivers ROV, survey, engineering, and subsea project services to the global offshore industry.” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
9	Imenco	Exact match	Aksdal, NorwayHQ recorded Nov 2, 2026	201-500	196 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 · Nov 2, 2026 · View company records in RevenueBase
10	Siem Offshore	Exact match	NorwayHQ recorded Nov 2, 2026	1,001-5,000	149 contacts →
	Exact match “Siem Offshore offers a dedicated and skilled workforce.” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
11	Island Drilling Company AS	Exact match	Sandsli, NorwayHQ recorded Nov 2, 2026	51-200	128 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 · Nov 2, 2026 · View company records in RevenueBase
12	Havila Subsea & Renewables	Exact match	Aalesund, NorwayHQ recorded Nov 2, 2026	201-500	123 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 2, 2026 · View company records in RevenueBase
13	Optime, A Halliburton Service	Exact match	Notodden, NorwayHQ recorded Nov 2, 2026	51-200	118 contacts →
	Exact match “Optime, A Halliburton Service is an innovative subsea oil and gas provider focusing on cost efficient solutions specifically towards products within the well access, well…” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
14	Abyss AS	Exact match	Kristiansund, NorwayHQ recorded Nov 2, 2026	201-500	100 contacts →
	Exact match “Abyss utfører alle tjenester på sjøen - over og under vann.” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
15	IKM Ocean Design AS	Exact match	Sandnes, NorwayHQ recorded Nov 2, 2026	51-200	95 contacts →
	Exact match “IKM Ocean Design is a leading innovative and independent company within development and design of offshore and subsea fields with more than 35 years of experience.” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
16	Subseadesign AS	Exact match	Lierbyen, NorwayHQ recorded Nov 2, 2026	51-200	53 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 · Nov 2, 2026 · View company records in RevenueBase
17	RTS	Exact match	Åkrehamn, NorwayHQ recorded Nov 2, 2026	11-50	49 contacts →
	Exact match “RTS is a supplier of engineering solutions, equipment rental, product sales and personnel supply.” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
18	WEPCO	Exact match	Stavanger, NorwayHQ recorded Nov 2, 2026	11-50	46 contacts →
	Exact match “Wepco AS ble etablert i 1986 og er i dag et moderne og velutstyrt service-verksted med høyt kvalifisert personell.” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
19	MSI	Exact match	Drøbak, NorwayHQ recorded Nov 2, 2026	51-200	44 contacts →
	Exact match “We bring the shipyard to you" MSI specialises in working while the asset is in operation.” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
20	Kystdesign	Exact match	Aksdal, NorwayHQ recorded Nov 2, 2026	51-200	43 contacts →
	Exact match “KYSTDESIGN delivers a wide range of products for the subsea oil- and gas industry, renewables, research and fish farming.” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
21	Subseapartner AS	Exact match	Haugesund, NorwayHQ recorded Nov 2, 2026	11-50	41 contacts →
	Exact match “SubseaPartner is a leading diving contractor in the shallow-deep segment.” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
22	Swire Seabed	Exact match	Bergen, NorwayHQ recorded Nov 2, 2026	51-200	41 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 2, 2026 · View company records in RevenueBase
23	Innova	Exact match	Sandnes, NorwayHQ recorded Nov 2, 2026	51-200	38 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 2, 2026 · View company records in RevenueBase
24	Wellconnection Group	Exact match	Stavanger, NorwayHQ recorded Nov 2, 2026	51-200	37 contacts →
	Exact match “WellConnection Group is the leading company within inspection, maintenance and repair services (IMR) for drilling and subsea equipment on the Norwegian Continental Shelf.” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
25	Remotion AS	Exact match	Sandnes, NorwayHQ recorded Nov 2, 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 2, 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 “subsea maintenance 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 25 of 159 subsea maintenance services based in Norway

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Subsea maintenance services based in Norway at a glance

As of Nov 2, 2026

27.1%Verified-email coverage

65.7Average contacts per company

11-50Median size (employees)

8.2%Largest-city concentration · Stavanger

Nov 2, 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 159 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 “subsea maintenance 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 2,828 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 2, 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 “subsea maintenance services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many subsea maintenance services are there based in Norway?

RevenueBase identified 159 company matches for subsea maintenance 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?

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

Which city has the most subsea maintenance services?

Stavanger leads with 13 company records, followed by Haugesund (10) and Bergen (9).

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 2,828 professional contacts with verified work emails tracked across these 159 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 2, 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.