Company lists · Data refreshed September 2026

Top 25 Offshore environmental consulting based in Norway

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

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 188 companies tracked

RevenueBase identified 188 offshore environmental consulting headquartered in Norway as of September 2026 and tracks 5,720 professional contacts across them, including 1,750 with verified work emails. Oslo is the largest hub.

This list covers offshore environmental consulting 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 20, 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 20, 2026 86% judged on-target in blind review

188Companies

5,720Contacts tracked

1,750Verified emails

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The 25 largest offshore environmental consulting based in Norway

Ranked by team size

Top 25 of 188 offshore environmental consulting based in Norway, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to offshore environmental consulting: 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	Shearwater Geoservices	Indirect evidence	Laksevåg, NorwayHQ checked Sep 20, 2026	1,001-5,000	1,031 contacts →
	Indirect evidence “Shearwater is a global marine geoscience and technology business.” Source: RevenueBase Database · checked Sep 20, 2026
2	AGR	Indirect evidence	Oslo, NorwayHQ checked Sep 20, 2026	501-1,000	768 contacts →
	Indirect 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 20, 2026
3	Island Offshore	Partial evidence	Ulsteinvik, NorwayHQ checked Sep 20, 2026	501-1,000	501 contacts →
	Partial 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 20, 2026
4	Global Maritime	Partial evidence	Stavanger, NorwayHQ checked Sep 20, 2026	201-500	472 contacts →
	Partial evidence “Global Maritime delivers integrated marine solutions for a changing offshore world.” Source: RevenueBase Database · checked Sep 20, 2026
5	Reach Subsea	Partial evidence	Haugesund, NorwayHQ checked Sep 20, 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 20, 2026
6	Omega Subsea	Partial evidence	Bergen, NorwayHQ checked Sep 20, 2026	201-500	209 contacts →
	Partial evidence “Omega Subsea delivers ROV, survey, engineering, and subsea project services to the global offshore industry.” Source: RevenueBase Database · checked Sep 20, 2026
7	Dr.Techn. Olav Olsen AS	Strong evidence	Lysaker, NorwayHQ checked Sep 20, 2026	51-200	125 contacts →
	Strong evidence “Consulting, design and engineering for offshore, coastal and civil construction.” Source: RevenueBase Database · checked Sep 20, 2026
8	Sevan Deepwater Technology	Indirect evidence	Bergen, NorwayHQ checked Sep 20, 2026	11-50	108 contacts →
	Indirect evidence “Sevan Deepwater Technology is a specialized marine engineering and design house.” Source: RevenueBase Database · checked Sep 20, 2026
9	Hoyland Offshore AS	Indirect evidence	None, NorwayHQ checked Sep 20, 2026	51-200	107 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
10	Techouse AS	Partial evidence	Sandnes, NorwayHQ checked Sep 20, 2026	51-200	106 contacts →
	Partial 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 20, 2026
11	Akvaplan-Niva	Partial evidence	Tromsø, NorwayHQ checked Sep 20, 2026	51-200	91 contacts →
	Partial evidence “Akvaplan-niva provides expert knowledge and advice on the aquatic environment and impacts from climate change, environmental toxins and industries like the aquaculture and energy…” Source: RevenueBase Database · checked Sep 20, 2026
12	FØN Energy Services	Partial evidence	Fornebu, NorwayHQ checked Sep 20, 2026	51-200	78 contacts →
	Partial evidence “Føn Energy Services is an independent service provider to the offshore energy sector.” Source: RevenueBase Database · checked Sep 20, 2026
13	Moss Maritime	Partial evidence	Lysaker, NorwayHQ checked Sep 20, 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 20, 2026
14	Force Technology Norway AS	Indirect evidence	Hvalstad, NorwayHQ checked Sep 20, 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 20, 2026
15	Unitech Power Systems AS	Indirect evidence	Stavanger, NorwayHQ checked Sep 20, 2026	11-50	54 contacts →
	Indirect evidence “Unitech Power Systems is a leading consultancy and digital solutions provider within electrical power systems.” Source: RevenueBase Database · checked Sep 20, 2026
16	AF Offshore Decom	Strong evidence	Oslo, NorwayHQ checked Sep 20, 2026	51-200	54 contacts →
	Strong evidence “AF Offshore Decom is a leading company in environmentally friendly recycling of offshore assets.” Source: RevenueBase Database · checked Sep 20, 2026
17	Aqua Kompetanse AS	Indirect evidence	Flatanger, NorwayHQ checked Sep 20, 2026	51-200	52 contacts →
	Indirect evidence “Aqua Kompetanse AS ble stiftet i juni og har i dag avdelinger i Stavanger, Bergen, Flatanger, Namsos, Rørvik, Sandnessjøen og Tromsø.” Source: RevenueBase Database · checked Sep 20, 2026
18	Semar AS	Partial evidence	Lysaker, NorwayHQ checked Sep 20, 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 20, 2026
19	SUB SEA Services AS	Partial evidence	Stavanger, NorwayHQ checked Sep 20, 2026	51-200	52 contacts →
	Partial evidence “Sub Sea Services is a solution-focused, flexible and collaboration oriented partner to the offshore drilling industry.” Source: RevenueBase Database · checked Sep 20, 2026
20	MIROS	Indirect evidence	Asker, NorwayHQ checked Sep 20, 2026	11-50	44 contacts →
	Indirect evidence “Miros delivers real-time ocean insights by measuring waves, currents, speed-through-water, and predicting wave and vessel motion to improve safety and operational efficiency at…” Source: RevenueBase Database · checked Sep 20, 2026
21	Applied Petroleum Technology APT	Indirect evidence	Oslo, NorwayHQ checked Sep 20, 2026	11-50	28 contacts →
	Indirect evidence “APT offers an extensive and integrated experience in consultancy services for both the Norwegian Continental Shelf and abroad.” Source: RevenueBase Database · checked Sep 20, 2026
22	Arctic Offshore	Partial evidence	Oslo, NorwayHQ checked Sep 20, 2026	11-50	27 contacts →
	Partial evidence “Arctic Offshore is a leading offshore shipbroking and consultancy company, with additional focus on international project finance.” Source: RevenueBase Database · checked Sep 20, 2026
23	RAKON	Partial evidence	Stavanger, NorwayHQ checked Sep 20, 2026	11-50	27 contacts →
	Partial evidence “Rakon offers contractor and consulting services with a high focus on fit for purpose, safe- and cost-effective solutions.” Source: RevenueBase Database · checked Sep 20, 2026
24	Techno Dive	Indirect evidence	Avaldsnes, NorwayHQ checked Sep 20, 2026	11-50	25 contacts →
	Indirect evidence “Techno Dive is your partner for Safe and Efficient Subsea Work.” Source: RevenueBase Database · checked Sep 20, 2026
25	Rexor Marine AS	Indirect evidence	Tananger, NorwayHQ checked Sep 20, 2026	51-200	24 contacts →
	Indirect evidence “Rexor Marine er en annerledes og spennende aktør innen arbeidsdykking, havnearbeid og bemanning i regionen.” Source: RevenueBase Database · checked Sep 20, 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: offshore environmental consulting. 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 offshore environmental consulting.
Partial evidence: Its own public description names part of offshore environmental consulting, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name offshore environmental consulting. 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 188 offshore environmental consulting based in Norway

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Offshore environmental consulting based in Norway at a glance

As of Sep 20, 2026

30.6%Verified-email coverage

30.4Average contacts per company

1-10Median size (employees)

17.6%Largest-city concentration · Oslo

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

105

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 188 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 offshore environmental consulting, 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 “offshore environmental consulting”. 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 offshore environmental consulting), 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 offshore environmental consulting, 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, 1,750 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 20, 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.

Offshore environmental consulting by metro

Offshore environmental consulting in Oslo33

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 offshore environmental consulting, 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 offshore environmental consulting are there based in Norway?

RevenueBase identified 188 offshore environmental consulting 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?

Shearwater Geoservices, headquartered in Laksevag, tops this list with the largest team on record.

Which city has the most offshore environmental consulting?

Oslo leads with 33 headquartered companies, followed by Stavanger (15) and Bergen (9).

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 1,750 verified decision-maker contacts tracked across these 188 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 20, 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.