Company lists · Data refreshed September 2026

Top 25 Marine environmental consultancies based in Norway

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

Compiled by the RevenueBase Data Team Data refreshed Sep 14, 2026 227 companies tracked

RevenueBase identified 227 marine environmental consultancies headquartered in Norway as of September 2026 and tracks 7,034 professional contacts across them, including 2,666 with verified work emails. Oslo is the largest hub.

This list covers marine environmental consultancies 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 14, 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 14, 2026 86% judged on-target in blind review

227Companies

7,034Contacts tracked

2,666Verified emails

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The 25 largest marine environmental consultancies based in Norway

Ranked by team size

Top 25 of 227 marine environmental consultancies based in Norway, ranked by team size, largest first. Data refreshed Sep 14, 2026. RevenueBase Smart Search rates how each company's information relates to marine environmental consultancies: 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	Partial evidence	Laksevåg, NorwayHQ checked Sep 14, 2026	1,001-5,000	1,031 contacts →
	Partial evidence “Shearwater is a global marine geoscience and technology business.” Source: RevenueBase Database · checked Sep 14, 2026
2	Institute Of Marine Research IMR , Norway	Partial evidence	Bergen, NorwayHQ checked Sep 14, 2026	1,001-5,000	783 contacts →
	Partial evidence “The Institute of Marine Research (IMR) is one of the biggest research institute of its kind in Europe, with over employees.” Source: RevenueBase Database · checked Sep 14, 2026
3	AGR	Partial evidence	Oslo, NorwayHQ checked Sep 14, 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 14, 2026
4	Island Offshore	Indirect evidence	Ulsteinvik, NorwayHQ checked Sep 14, 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 14, 2026
5	Global Maritime	Partial evidence	Stavanger, NorwayHQ checked Sep 14, 2026	201-500	472 contacts →
	Partial evidence “Global Maritime delivers integrated marine solutions for a changing offshore world.” Source: RevenueBase Database · checked Sep 14, 2026
6	NINA	Indirect evidence	Trondheim, NorwayHQ checked Sep 14, 2026	201-500	358 contacts →
	Indirect evidence “The Norwegian Institute for Nature Research (NINA) is Norway’s leading institution for applied ecological research.” Source: RevenueBase Database · checked Sep 14, 2026
7	Ocean Installer	Partial evidence	Stavanger, NorwayHQ checked Sep 14, 2026	201-500	299 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 14, 2026
8	Omega Subsea	Indirect evidence	Bergen, NorwayHQ checked Sep 14, 2026	201-500	209 contacts →
	Indirect evidence “Omega Subsea delivers ROV, survey, engineering, and subsea project services to the global offshore industry.” Source: RevenueBase Database · checked Sep 14, 2026
9	Buksér OG Berging AS	Partial evidence	Lysaker, NorwayHQ checked Sep 14, 2026	201-500	172 contacts →
	Partial evidence “Buksér og Berging AS is a leading supplier of marine services within port and terminals, ocean towage, offshore work and complex marine operations.” Source: RevenueBase Database · checked Sep 14, 2026
10	Manta Marine Technologies	Partial evidence	Oslo, NorwayHQ checked Sep 14, 2026	51-200	146 contacts →
	Partial evidence “Manta Marine Technologies has been at the forefront of maritime emissions reduction since 2010.” Source: RevenueBase Database · checked Sep 14, 2026
11	Havila Subsea & Renewables	Indirect evidence	Aalesund, NorwayHQ checked Sep 14, 2026	201-500	120 contacts →
	Indirect 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 14, 2026
12	Sevan Deepwater Technology	Partial evidence	Bergen, NorwayHQ checked Sep 14, 2026	11-50	108 contacts →
	Partial evidence “Sevan Deepwater Technology is a specialized marine engineering and design house.” Source: RevenueBase Database · checked Sep 14, 2026
13	Åkerblå AS	Indirect evidence	Sistranda, NorwayHQ checked Sep 14, 2026	51-200	107 contacts →
	Indirect evidence “Åkerblå Group AS er et konsern som leverer tjenester til havbruksnæringen, offentlig sektor, forsknings- og utdanningsinstitusjoner og andre aktører.” Source: RevenueBase Database · checked Sep 14, 2026
14	Maritime Montering	Indirect evidence	Bygstad, NorwayHQ checked Sep 14, 2026	501-1,000	100 contacts →
	Indirect evidence “We bring comfort to life at sea.” Source: RevenueBase Database · checked Sep 14, 2026
15	Akvaplan-Niva	Partial evidence	Tromsø, NorwayHQ checked Sep 14, 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 14, 2026
16	Abyss AS	Indirect evidence	Kristiansund, NorwayHQ checked Sep 14, 2026	201-500	84 contacts →
	Indirect evidence “Abyss utfører alle tjenester på sjøen - over og under vann.” Source: RevenueBase Database · checked Sep 14, 2026
17	Force Technology Norway AS	Indirect evidence	Hvalstad, NorwayHQ checked Sep 14, 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 14, 2026
18	Noah AS	Partial evidence	Holmestrand, NorwayHQ checked Sep 14, 2026	51-200	54 contacts →
	Partial evidence “NOAH is a leading environmental service provider focused on the treatment of hazardous waste and handling of contaminated materials.” Source: RevenueBase Database · checked Sep 14, 2026
19	Aqua Kompetanse AS	Indirect evidence	Flatanger, NorwayHQ checked Sep 14, 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 14, 2026
20	Semar AS	Indirect evidence	Lysaker, NorwayHQ checked Sep 14, 2026	11-50	52 contacts →
	Indirect 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 14, 2026
21	Marintek	Partial evidence	Trondheim, NorwayHQ checked Sep 14, 2026	51-200	51 contacts →
	Partial evidence “Norwegian Marine Technology Research Institute (MARINTEK) and SINTEF Fisheries and Aquaculture are merged into a new private limited company, SINTEF Ocean, operative from 1…” Source: RevenueBase Database · checked Sep 14, 2026
22	Selstad	Indirect evidence	Måløy, NorwayHQ checked Sep 14, 2026	201-500	47 contacts →
	Indirect evidence “Selstad is an international supplier of competence and equipment for sea-based commerce, with quality, good service and innovation ranking among our main priorities.” Source: RevenueBase Database · checked Sep 14, 2026
23	Mørenot Aquaculture	Indirect evidence	NorwayHQ checked Sep 14, 2026	11-50	42 contacts →
	Indirect evidence “Mørenot Aquaculture is a part of the Mørenot Group, delivering aqua culture products, service on nets, Engineering service, mooring analysis and R&D Projects for Mørenot and Sea…” Source: RevenueBase Database · checked Sep 14, 2026
24	Furuno Norge AS	Partial evidence	6008 Ålesund, NorwayHQ checked Sep 14, 2026	11-50	38 contacts →
	Partial evidence “Furuno is one of the world's leading suppliers of maritime electronics and has more than employees worldwide.” Source: RevenueBase Database · checked Sep 14, 2026
25	Labora	Indirect evidence	Bodø, NorwayHQ checked Sep 14, 2026	11-50	34 contacts →
	Indirect evidence “Labora er et analyselaboratorium og en fiskehelsetjeneste lokalisert i Bodø, trafikknutepunktet i Nordland.” Source: RevenueBase Database · checked Sep 14, 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: marine environmental consultancies. 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 marine environmental consultancies.
Partial evidence: Its own public description names part of marine environmental consultancies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name marine environmental consultancies. 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 227 marine environmental consultancies based in Norway

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Marine environmental consultancies based in Norway at a glance

As of Sep 14, 2026

37.9%Verified-email coverage

31.0Average contacts per company

1-10Median size (employees)

17.2%Largest-city concentration · Oslo

Sep 14, 2026Page data refreshed

Companies by employee count

1-10

132

11-50

51-200

201-500

501-1,000

1,001-5,000

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 227 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 marine environmental consultancies, 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 “marine environmental consultancies”. 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 marine environmental consultancies), 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 marine environmental consultancies, 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, 2,666 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 14, 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.

Marine environmental consultancies by metro

Marine environmental consultancies in Oslo39

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 marine environmental consultancies, 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 marine environmental consultancies are there based in Norway?

RevenueBase identified 227 marine environmental consultancies 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 marine environmental consultancies?

Oslo leads with 39 headquartered companies, followed by Alesund (13) and Bergen (11).

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 2,666 verified decision-maker contacts tracked across these 227 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 14, 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.