Company lists · Data refreshed November 2026

Top 25 Subsea installation services based in Norway

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

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 188 companies tracked

RevenueBase identified 188 company matches for subsea installation services associated with Norway as of November 2026 and tracks 9,206 professional contacts across them, including 2,129 with verified work emails. Stavanger is the largest hub.

This list covers company matches for subsea installation services 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 November 6, 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 Nov 6, 2026 How this list was built

188Companies

9,206Contacts tracked

2,129Verified emails

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The 25 largest subsea installation services based in Norway

Ranked by team size

Top 25 of 188 company matches for subsea installation services based in Norway, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Deepocean	Exact match	Oslo, NorwayHQ recorded Nov 6, 2026	1,001-5,000	1,607 contacts →
	Exact match “DeepOcean is a technology-driven, independent solution provider in the ocean space.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	Prosafe	Exact match	N-4068 Stavanger, NorwayHQ recorded Nov 6, 2026	n/a	662 contacts →
	Exact match “Prosafe is a leading owner and operator of semi-submersible accommodation vessels.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	Island Offshore	Exact match	Ulsteinvik, NorwayHQ recorded Nov 6, 2026	501-1,000	538 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 · Nov 6, 2026 · View company records in RevenueBase
4	Reach Subsea	Exact match	Haugesund, NorwayHQ recorded Nov 6, 2026	501-1,000	488 contacts →
	Exact match “Reach Subsea is an offshore contractor delivering subsea services and ocean data, survey, inspection, maintenance and repair, and construction support for offshore energy and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	Eidesvik Offshore ASA	Exact match	Langevag, NorwayHQ recorded Nov 6, 2026	501-1,000	333 contacts →
	Exact match “Offshore Shipping Company.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	Linjebygg AS	Exact match	Molde, NorwayHQ recorded Nov 6, 2026	201-500	260 contacts →
	Exact match “Linjebygg provides LIFE CYCLE EXTENSION.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	Omega Subsea	Exact match	Bergen, NorwayHQ recorded Nov 6, 2026	201-500	255 contacts →
	Exact match “Omega Subsea delivers ROV, survey, engineering, and subsea project services to the global offshore industry.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	Olympic Subsea ASA	Exact match	Fosnavåg Brygge 2.etg, NorwayHQ recorded Nov 6, 2026	501-1,000	216 contacts →
	Exact match “For thousands of years, people on Norway’s weather torn west coast have ridden the waves and conquered the sea.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	Imenco	Exact match	Aksdal, NorwayHQ recorded Nov 6, 2026	201-500	195 contacts →
	Exact match “Imenco is a group of companies working mainly in five main business areas: Offshore oil & gas, offshore renewables, aquaculture, marine & naval and industrial.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	Vestland Offshore AS	Exact match	Austevoll, NorwayHQ recorded Nov 6, 2026	n/a	164 contacts →
	Exact match “Vestland Offshore AS is a worldwide shipping company within the offshore oil & gas and renewable industry.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	Havila Subsea & Renewables	Exact match	Aalesund, NorwayHQ recorded Nov 6, 2026	201-500	134 contacts →
	Exact match “Havila Subsea & Renewables operates an advanced fleet of vessels dedicated to Diving, Offshore Inspection, Repair, and Maintenance (IRM), as well as Construction.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	Island Drilling Company AS	Exact match	Sandsli, NorwayHQ recorded Nov 6, 2026	51-200	131 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 · Nov 6, 2026 · View company records in RevenueBase
13	Optime, A Halliburton Service	Exact match	Notodden, NorwayHQ recorded Nov 6, 2026	51-200	122 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	Technip India Limited	Exact match	Sandvika, NorwayHQ recorded Nov 6, 2026	51-200	116 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	Abyss AS	Exact match	Kristiansund, NorwayHQ recorded Nov 6, 2026	201-500	106 contacts →
	Exact match “Abyss utfører alle tjenester på sjøen - over og under vann.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	NYMO	Exact match	Grimstad, NorwayHQ recorded Nov 6, 2026	201-500	99 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 · Nov 6, 2026 · View company records in RevenueBase
17	Havfram	Exact match	Oslo, NorwayHQ recorded Nov 6, 2026	51-200	81 contacts →
	Exact match “Havfram is a pure play offshore wind company, providing transport and installation services to the offshore wind sector as an owner and operator of Wind Turbine Installation…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	Siem Offshore	Exact match	NorwayHQ recorded Nov 6, 2026	1,001-5,000	73 contacts →
	Exact match “Siem Offshore offers a dedicated and skilled workforce.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	Moss Maritime	Exact match	Lysaker, NorwayHQ recorded Nov 6, 2026	51-200	69 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 · Nov 6, 2026 · View company records in RevenueBase
20	Subseadesign AS	Exact match	Lierbyen, NorwayHQ recorded Nov 6, 2026	51-200	52 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 · Nov 6, 2026 · View company records in RevenueBase
21	RTS	Exact match	Åkrehamn, NorwayHQ recorded Nov 6, 2026	11-50	51 contacts →
	Exact match “RTS is a supplier of engineering solutions, equipment rental, product sales and personnel supply.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	Agility	Exact match	Skien, NorwayHQ recorded Nov 6, 2026	51-200	51 contacts →
	Exact match “A Trusted Partner in Subsea Technology.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	Tratec	Exact match	Kristiansand, NorwayHQ recorded Nov 6, 2026	201-500	49 contacts →
	Exact match “Tratec is a supplier of technical solutions within electrical, automation, mechanical and piping to the offshore & marine, process industry and construction market.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	Kystdesign	Exact match	Aksdal, NorwayHQ recorded Nov 6, 2026	51-200	46 contacts →
	Exact match “KYSTDESIGN delivers a wide range of products for the subsea oil- and gas industry, renewables, research and fish farming.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	Subseapartner AS	Exact match	Haugesund, NorwayHQ recorded Nov 6, 2026	11-50	44 contacts →
	Exact match “SubseaPartner is a leading diving contractor in the shallow-deep segment.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “subsea installation services”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 188 subsea installation services based in Norway

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Subsea installation services based in Norway at a glance

As of Nov 6, 2026

23.1%Verified-email coverage

49.0Average contacts per company

11-50Median size (employees)

8.5%Largest-city concentration · Stavanger

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

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

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 “subsea installation services” 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 2,129 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 November 6, 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 “subsea installation services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many subsea installation services are there based in Norway?

RevenueBase identified 188 company matches for subsea installation services associated with Norway as of November 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?

Deepocean tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most subsea installation services?

Stavanger leads with 16 company records, followed by Oslo (14) and Haugesund (11).

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 2,129 professional contacts with verified work emails tracked across these 188 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 November 6, 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.