Company lists · Data refreshed September 2026

Top 25 Offshore rig construction companies based in Norway

RevenueBase identified 66 company matches for offshore rig construction companies associated with Norway as of September 2026 and tracks 6,998 professional contacts across them, including 2,665 with verified work emails. Stavanger is the largest hub.

This list covers company matches for offshore rig construction companies 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 September 17, 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 Sep 17, 2026 How this list was built
66Companies
6,998Contacts tracked
2,665Verified emails
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The 25 largest offshore rig construction companies based in Norway

Ranked by team size
Top 25 of 66 company matches for offshore rig construction companies based in Norway, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 17, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchBergen, NorwayHQ recorded Sep 17, 20265,001-10,0002,942 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 · Sep 17, 2026 · View company records in RevenueBase
2Exact matchSandnes, NorwayHQ recorded Sep 17, 2026501-1,000629 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
3Exact matchKristiansand, NorwayHQ recorded Sep 17, 20261,001-5,000560 contacts →

Exact match

“October 2021.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
4Exact matchUlsteinvik, NorwayHQ recorded Sep 17, 2026501-1,000501 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 · Sep 17, 2026 · View company records in RevenueBase
5Exact matchLangevag, NorwayHQ recorded Sep 17, 2026501-1,000308 contacts →

Exact match

“Offshore Shipping Company.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
6Exact matchStavanger, NorwayHQ recorded Sep 17, 2026201-500299 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
7Exact matchOslo, NorwayHQ recorded Sep 17, 2026201-500233 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 · Sep 17, 2026 · View company records in RevenueBase
8Exact matchMongstad, NorwayHQ recorded Sep 17, 2026201-500133 contacts →

Exact match

“PSW Technology offers a wide range of services and solutions to the global drilling industry.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
9Exact matchSandsli, NorwayHQ recorded Sep 17, 202651-200114 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 · Sep 17, 2026 · View company records in RevenueBase
10Exact matchBergen, NorwayHQ recorded Sep 17, 202611-50108 contacts →

Exact match

“Sevan Deepwater Technology is a specialized marine engineering and design house.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
11Exact matchGrimstad, NorwayHQ recorded Sep 17, 2026201-500105 contacts →

Exact match

“Nymo is a full-service engineering, procurement and construction company within the oil & gas and process industry.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
12Exact matchVindafjord, NorwayHQ recorded Sep 17, 2026201-500103 contacts →

Exact match

“Westcon Yards AS is a modern shipyard with a main focus on offshore service, shipbuilding, rig and ship repair.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
13Exact matchSandnes, NorwayHQ recorded Sep 17, 202651-20091 contacts →

Exact match

“Macro Offshore, is a fully integrated owner and operator of accommodation vessels with a fleet of two harsh-environment deep-water accommodation jack-up rigs, Haven and Crossway…”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
14Exact matchLysaker, NorwayHQ recorded Sep 17, 202651-20065 contacts →

Exact match

“Moss Maritime provides leading technology and expertise within design and engineering services to the offshore energy sector as well as other ocean-based sectors.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
15Exact matchTrondheim, NorwayHQ recorded Sep 17, 202651-20053 contacts →

Exact match

“Moen Marin AS is a company well-anchored in the maritime community, with roots dating as far back as 1923.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
16Exact matchLysaker, NorwayHQ recorded Sep 17, 202611-5052 contacts →

Exact match

“Semar was founded in 1980 as an independent engineering consultant firm devoted primarily to the offshore oil and gas industry.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17Exact matchStavanger, NorwayHQ recorded Sep 17, 202651-20052 contacts →

Exact match

“Sub Sea Services is a solution-focused, flexible and collaboration oriented partner to the offshore drilling industry.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
18Exact matchNorwayHQ recorded Sep 17, 202651-20050 contacts →

Exact match

“Petrolink operates platforms, subsea installations and floating production units offshore, oil and gas terminals onshore, refineries and process plants including power plants and…”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
19Exact matchLierbyen, NorwayHQ recorded Sep 17, 202651-20047 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 · Sep 17, 2026 · View company records in RevenueBase
20Exact matchBrevik, NorwayHQ recorded Sep 17, 202611-5036 contacts →

Exact match

“Brevik Engineering is a naval architect and marine engineering company located in Brevik, Norway.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21Exact matchSentrum, NorwayHQ recorded Sep 17, 202651-20029 contacts →

Exact match

“Inocean delivers design, engineering- and project management services, and cover Oil & Gas as well as the Renewable Industry.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
22Exact matchTananger, NorwayHQ recorded Sep 17, 202651-20023 contacts →

Exact match

“WellPartner AS is a service company that delivers technical expertise and high quality equipment and services within subsea drilling, completion and intervention operations.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23Exact matchStavanger, NorwayHQ recorded Sep 17, 20261,001-5,00017 contacts →

Exact match

“Moreld is an industrial multi-disciplinary engineering group offering full-scope services across the offshore energy and marine industries including subsea installations.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24Exact matchKristiansand, NorwayHQ recorded Sep 17, 202611-5014 contacts →

Exact match

“Our knowledge is built on expertise and experience from rig equipment suppliers in Southern Norway, in addition to experience from rig companies, EPCIC segment and shipyards…”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
25Exact matchHinna, NorwayHQ recorded Sep 17, 202611-5010 contacts →

Exact match

“Engineering IDS is an engineering company specializing in offshore technology, concept design, marine services and crane inspections.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase

Showing 25 of 66 offshore rig construction companies based in Norway

See the full list, filter by size, metro and specialty, and access 2,665 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Offshore rig construction companies based in Norway at a glance

As of Sep 17, 2026
38.1%Verified-email coverage
106.0Average contacts per company
11-50Median size (employees)
18.2%Largest-city concentration · Stavanger
Sep 17, 2026Page data refreshed

Companies by employee count

1-10
14
11-50
25
51-200
15
201-500
6
501-1,000
3
1,001-5,000
2
5,001-10,000
1

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 66 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 “offshore rig construction companies” 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 2,665 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 September 17, 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 “offshore rig construction companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many offshore rig construction companies are there based in Norway?

RevenueBase identified 66 company matches for offshore rig construction companies associated with Norway as of September 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 offshore rig construction companies?

Stavanger leads with 12 company records, followed by Oslo (6) and Kristiansand (5).

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 2,665 professional contacts with verified work emails tracked across these 66 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 September 17, 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.