Company lists · Data refreshed September 2026

Top 25 Subsea engineering services based in Norway

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

Compiled by the RevenueBase Data Team Data refreshed Sep 18, 2026 290 companies tracked

RevenueBase identified 290 subsea engineering services headquartered in Norway as of September 2026 and tracks 11,688 professional contacts across them, including 4,103 with verified work emails. Stavanger is the largest hub.

This list covers subsea engineering services headquartered in Norway, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 18, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 18, 2026 86% judged on-target in blind review

290Companies

11,688Contacts tracked

4,103Verified emails

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The 25 largest subsea engineering services based in Norway

Ranked by team size

Top 25 of 290 subsea engineering services based in Norway, ranked by team size, largest first. Data refreshed Sep 18, 2026. RevenueBase Smart Search rates how each company's information relates to subsea engineering services: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	DOF	Partial evidence	Bergen, NorwayHQ checked Sep 18, 2026	5,001-10,000	2,942 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 18, 2026
2	Shearwater Geoservices	Indirect evidence	Laksevåg, NorwayHQ checked Sep 18, 2026	1,001-5,000	1,031 contacts →
	Indirect evidence “Shearwater is a global marine geoscience and technology business.” Source: RevenueBase Database · checked Sep 18, 2026
3	AGR	Partial evidence	Oslo, NorwayHQ checked Sep 18, 2026	501-1,000	768 contacts →
	Partial evidence “AGR – an Aqualis company – is a multidisciplinary consultancy, specialising in drilling & wells, subsurface, marine and subsea solutions, resourcing, technical safety and software…” Source: RevenueBase Database · checked Sep 18, 2026
4	Island Offshore	Indirect evidence	Ulsteinvik, NorwayHQ checked Sep 18, 2026	501-1,000	501 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 18, 2026
5	Global Maritime	Indirect evidence	Stavanger, NorwayHQ checked Sep 18, 2026	201-500	472 contacts →
	Indirect evidence “Global Maritime delivers integrated marine solutions for a changing offshore world.” Source: RevenueBase Database · checked Sep 18, 2026
6	Reach Subsea	Partial evidence	Haugesund, NorwayHQ checked Sep 18, 2026	201-500	454 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 18, 2026
7	Linjebygg AS	Indirect evidence	Molde, NorwayHQ checked Sep 18, 2026	201-500	261 contacts →
	Indirect evidence “Linjebygg provides LIFE CYCLE EXTENSION.” Source: RevenueBase Database · checked Sep 18, 2026
8	Akofs Offshore	Partial evidence	Oslo, NorwayHQ checked Sep 18, 2026	201-500	233 contacts →
	Partial evidence “AKOFS Offshore is a global provider of vessel based subsea well construction and intervention services to the oil and gas industry.” Source: RevenueBase Database · checked Sep 18, 2026
9	Omega Subsea	Strong evidence	Bergen, NorwayHQ checked Sep 18, 2026	201-500	209 contacts →
	Strong evidence “Omega Subsea delivers ROV, survey, engineering, and subsea project services to the global offshore industry.” Source: RevenueBase Database · checked Sep 18, 2026
10	Imenco	Indirect evidence	Aksdal, NorwayHQ checked Sep 18, 2026	201-500	199 contacts →
	Indirect evidence “Imenco is a group of companies working mainly in five main business areas: Offshore oil & gas, offshore renewables, aquaculture, marine & naval and industrial.” Source: RevenueBase Database · checked Sep 18, 2026
11	4subsea	Partial evidence	Asker, NorwayHQ checked Sep 18, 2026	51-200	157 contacts →
	Partial evidence “4Subsea is a leading provider of technology and services that help operators optimise energy production from subsea oil & gas fields and offshore wind farms.” Source: RevenueBase Database · checked Sep 18, 2026
12	Dr.Techn. Olav Olsen AS	Partial evidence	Lysaker, NorwayHQ checked Sep 18, 2026	51-200	125 contacts →
	Partial evidence “Consulting, design and engineering for offshore, coastal and civil construction.” Source: RevenueBase Database · checked Sep 18, 2026
13	IK Group	Partial evidence	Stavanger, NorwayHQ checked Sep 18, 2026	51-200	123 contacts →
	Partial evidence “IK SUBSEA - IK TOPSIDE - IK TRAX - IZOMAX - NORCLAMP Our clever use of proven technology makes your flowlines and pipelines run safely and profitably.” Source: RevenueBase Database · checked Sep 18, 2026
14	Havila Subsea & Renewables	Partial evidence	Aalesund, NorwayHQ checked Sep 18, 2026	201-500	120 contacts →
	Partial evidence “Havila Subsea & Renewables operates an advanced fleet of vessels dedicated to Diving, Offshore Inspection, Repair, and Maintenance (IRM), as well as Construction.” Source: RevenueBase Database · checked Sep 18, 2026
15	Sevan Deepwater Technology	Partial evidence	Bergen, NorwayHQ checked Sep 18, 2026	11-50	108 contacts →
	Partial evidence “Sevan Deepwater Technology is a specialized marine engineering and design house.” Source: RevenueBase Database · checked Sep 18, 2026
16	Techouse AS	Indirect evidence	Sandnes, NorwayHQ checked Sep 18, 2026	51-200	106 contacts →
	Indirect evidence “Techouse is a leader in the provision of offshore platform processing equipment and services to the international oil & gas industry.” Source: RevenueBase Database · checked Sep 18, 2026
17	NYMO	Partial evidence	Grimstad, NorwayHQ checked Sep 18, 2026	201-500	105 contacts →
	Partial evidence “Nymo is a full-service engineering, procurement and construction company within the oil & gas and process industry.” Source: RevenueBase Database · checked Sep 18, 2026
18	Optime, A Halliburton Service	Partial evidence	Notodden, NorwayHQ checked Sep 18, 2026	51-200	98 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 18, 2026
19	Electromagnetic Geoservices ASA	Partial evidence	Oslo, NorwayHQ checked Sep 18, 2026	11-50	79 contacts →
	Partial evidence “EMGS Global AS (EMGS) is a leading provider of marine electromagnetic (EM) data and technology for offshore subsurface exploration and development.” Source: RevenueBase Database · checked Sep 18, 2026
20	IKM Acona	Indirect evidence	Sandnes, NorwayHQ checked Sep 18, 2026	51-200	73 contacts →
	Indirect evidence “IKM Acona is a leading provider of services to the oil and gas industry covering the complete lifecycle of oil and gas projects.” Source: RevenueBase Database · checked Sep 18, 2026
21	Moss Maritime	Partial evidence	Lysaker, NorwayHQ checked Sep 18, 2026	51-200	65 contacts →
	Partial evidence “Moss Maritime provides leading technology and expertise within design and engineering services to the offshore energy sector as well as other ocean-based sectors.” Source: RevenueBase Database · checked Sep 18, 2026
22	Technip India Limited	Indirect evidence	Sandvika, NorwayHQ checked Sep 18, 2026	51-200	59 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 18, 2026
23	Force Technology Norway AS	Indirect evidence	Hvalstad, NorwayHQ checked Sep 18, 2026	51-200	57 contacts →
	Indirect evidence “Force Technology Norway is a leading technological consultancy company, built on years of experience with innovative development and problem solving.” Source: RevenueBase Database · checked Sep 18, 2026
24	Agility	Partial evidence	Skien, NorwayHQ checked Sep 18, 2026	51-200	53 contacts →
	Partial evidence “A Trusted Partner in Subsea Technology.” Source: RevenueBase Database · checked Sep 18, 2026
25	Semar AS	Partial evidence	Lysaker, NorwayHQ checked Sep 18, 2026	11-50	52 contacts →
	Partial evidence “Semar was founded in 1980 as an independent engineering consultant firm devoted primarily to the offshore oil and gas industry.” Source: RevenueBase Database · checked Sep 18, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: subsea engineering services. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names subsea engineering services.
Partial evidence: Its own public description names part of subsea engineering services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name subsea engineering services. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 290 subsea engineering services based in Norway

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Subsea engineering services based in Norway at a glance

As of Sep 18, 2026

35.1%Verified-email coverage

40.3Average contacts per company

11-50Median size (employees)

10.7%Largest-city concentration · Stavanger

Sep 18, 2026Page data refreshed

Companies by employee count

1-10

115

11-50

104

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 290 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among subsea engineering services, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Norway whose own description of what they do matches “subsea engineering services”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names subsea engineering services), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among subsea engineering services, and records with no verified work email. Companies headquartered outside Norway are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 4,103 across the full list. 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 18, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Subsea engineering services by metro

Subsea engineering services in Stavanger31

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names subsea engineering services, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many subsea engineering services are there based in Norway?

RevenueBase identified 290 subsea engineering services headquartered in Norway as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

DOF, headquartered in Bergen, tops this list with the largest team on record.

Which city has the most subsea engineering services?

Stavanger leads with 31 headquartered companies, followed by Oslo (24) and Sandnes (12).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 4,103 verified decision-maker contacts tracked across these 290 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 18, 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 Smart Search, 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.