Company lists · Data refreshed September 2026

Top 25 Offshore support vessel operators based in Norway

Name: Offshore support vessel operators based in Norway
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 165 companies tracked

RevenueBase identified 165 offshore support vessel operators headquartered in Norway as of September 2026 and tracks 17,967 professional contacts across them, including 4,042 with verified work emails. Oslo is the largest hub.

This list covers offshore support vessel operators 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

165Companies

17,967Contacts tracked

4,042Verified emails

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The 25 largest offshore support vessel operators based in Norway

Ranked by team size

Top 25 of 165 offshore support vessel operators 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 support vessel operators: 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	Strong evidence	Bergen, NorwayHQ checked Sep 20, 2026	5,001-10,000	2,942 contacts →
	Strong 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 20, 2026
2	BW Offshore	Partial evidence	Oslo, NorwayHQ checked Sep 20, 2026	501-1,000	1,860 contacts →
	Partial evidence “BW Offshore engineers innovative floating production solutions.” Source: RevenueBase Database · checked Sep 20, 2026
3	Solstad	Partial evidence	Skudeneshavn, NorwayHQ checked Sep 20, 2026	1,001-5,000	1,625 contacts →
	Partial evidence “Solstad is a company with more than 60 years of experience within various shipping segments, and is currently one of the leading provider of specialized offshore tonnage to the…” Source: RevenueBase Database · checked Sep 20, 2026
4	Prosafe	Strong evidence	N-4068 Stavanger, NorwayHQ checked Sep 20, 2026	n/a	630 contacts →
	Strong evidence “Prosafe is a leading owner and operator of semi-submersible accommodation vessels.” Source: RevenueBase Database · checked Sep 20, 2026
5	Cosl Drilling Europe AS	Indirect evidence	Sandnes, NorwayHQ checked Sep 20, 2026	501-1,000	629 contacts →
	Indirect evidence “Always do better" is our guiding principle leading us through the energy transition and towards our vision of becoming the preferred supplier of drilling services.” Source: RevenueBase Database · checked Sep 20, 2026
6	Wilhelmsen Ships Service	Indirect evidence	Oslo, NorwayHQ checked Sep 20, 2026	1,001-5,000	576 contacts →
	Indirect evidence “With the largest maritime supply network in the world, we’re active in over ports, in more than 125 countries worldwide.” Source: RevenueBase Database · checked Sep 20, 2026
7	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
8	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
9	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
10	BW LNG	Partial evidence	Oslo, NorwayHQ checked Sep 20, 2026	1,001-5,000	416 contacts →
	Partial evidence “BW LNG is a leading developer, owner and operator of floating gas infrastructure solutions.” Source: RevenueBase Database · checked Sep 20, 2026
11	Eidesvik Offshore ASA	Partial evidence	Langevag, NorwayHQ checked Sep 20, 2026	501-1,000	308 contacts →
	Partial evidence “Offshore Shipping Company.” Source: RevenueBase Database · checked Sep 20, 2026
12	Østensjø Rederi	Indirect evidence	Haugesund, NorwayHQ checked Sep 20, 2026	501-1,000	293 contacts →
	Indirect evidence “Østensjø Rederi is a family-owned company, established in 1974 by owner Johannes Østensjø.” Source: RevenueBase Database · checked Sep 20, 2026
13	REM Offshore	Partial evidence	Fosnavåg, NorwayHQ checked Sep 20, 2026	201-500	288 contacts →
	Partial evidence “About Rem Offshore Rem Offshore is a new company with old roots – tracing back to 1978 with fishery activities in Norway, Rem Offshore organisation today operates worldwide, with…” Source: RevenueBase Database · checked Sep 20, 2026
14	Torvald Klaveness	Indirect evidence	Oslo, NorwayHQ checked Sep 20, 2026	51-200	237 contacts →
	Indirect evidence “Torvald Klaveness is a pioneering and progressive shipping company with a vision to improve the nature of shipping and a mission to make seaborne supply chains resilient…” Source: RevenueBase Database · checked Sep 20, 2026
15	Fred. Olsen Windcarrier	Indirect evidence	Oslo, NorwayHQ checked Sep 20, 2026	51-200	234 contacts →
	Indirect evidence “Fred.” Source: RevenueBase Database · checked Sep 20, 2026
16	Akofs Offshore	Strong evidence	Oslo, NorwayHQ checked Sep 20, 2026	201-500	233 contacts →
	Strong 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 20, 2026
17	Olympic Subsea ASA	Indirect evidence	Fosnavåg Brygge 2.etg, NorwayHQ checked Sep 20, 2026	501-1,000	201 contacts →
	Indirect evidence “For thousands of years, people on Norway’s weather torn west coast have ridden the waves and conquered the sea.” Source: RevenueBase Database · checked Sep 20, 2026
18	Simon Møkster Shipping AS	Strong evidence	Stavanger, NorwayHQ checked Sep 20, 2026	501-1,000	199 contacts →
	Strong evidence “Simon Møkster Shipping AS is a supplier of modern offshore support vessels with high quality specifications, designed for operations in harsh weather conditions.” Source: RevenueBase Database · checked Sep 20, 2026
19	Norsea	Strong evidence	Sola, NorwayHQ checked Sep 20, 2026	1,001-5,000	181 contacts →
	Strong evidence “With strategically located supply bases across Europe, NorSea can offer efficient logistic support to your offshore activities anywhere in The North Sea basin, Norwegian sea and…” Source: RevenueBase Database · checked Sep 20, 2026
20	Aurora Offshore AS	Partial evidence	Kristiansand, NorwayHQ checked Sep 20, 2026	n/a	181 contacts →
	Partial evidence “Aurora Offshore is part of the Borealis Group.” Source: RevenueBase Database · checked Sep 20, 2026
21	Buksér OG Berging AS	Partial evidence	Lysaker, NorwayHQ checked Sep 20, 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 20, 2026
22	Sanco Shipping	Indirect evidence	Gjerdsvika, NorwayHQ checked Sep 20, 2026	201-500	169 contacts →
	Indirect evidence “Sanco Shipping AS (Sanco) manages day-to-day operations as well as fleet renewals, financing and chartering in accordance with the board of directors of the different ship owning…” Source: RevenueBase Database · checked Sep 20, 2026
23	Vestland Offshore AS	Partial evidence	Austevoll, NorwayHQ checked Sep 20, 2026	n/a	154 contacts →
	Partial evidence “Vestland Offshore AS is a worldwide shipping company within the offshore oil & gas and renewable industry.” Source: RevenueBase Database · checked Sep 20, 2026
24	BOA Offshore	Partial evidence	Trondheim, NorwayHQ checked Sep 20, 2026	51-200	150 contacts →
	Partial evidence “BOA is a family business, which has been providing offshore services since the 70's.” Source: RevenueBase Database · checked Sep 20, 2026
25	Edda Wind	Indirect evidence	Haugesund, NorwayHQ checked Sep 20, 2026	51-200	137 contacts →
	Indirect evidence “Edda Wind has been dissolved and is no longer operating as of May 2026.” 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 support vessel operators. 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 support vessel operators.
Partial evidence: Its own public description names part of offshore support vessel operators, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name offshore support vessel operators. 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 165 offshore support vessel operators based in Norway

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Offshore support vessel operators based in Norway at a glance

As of Sep 20, 2026

22.5%Verified-email coverage

108.9Average contacts per company

11-50Median size (employees)

11.5%Largest-city concentration · Oslo

Sep 20, 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 165 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 support vessel operators, 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 support vessel operators”. 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 support vessel operators), 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 support vessel operators, 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, 4,042 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.

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 support vessel operators, 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 support vessel operators are there based in Norway?

RevenueBase identified 165 offshore support vessel operators 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 offshore support vessel operators?

Oslo leads with 19 headquartered companies, followed by Haugesund (11) and Stavanger (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 4,042 verified decision-maker contacts tracked across these 165 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.