Company lists · Data refreshed November 2026

Top 25 Underwater maintenance service providers based in Norway

Name: Underwater maintenance service providers based in Norway
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 87 companies tracked

RevenueBase identified 87 company matches for underwater maintenance service providers associated with Norway as of November 2026 and tracks 2,807 professional contacts across them, including 986 with verified work emails. Haugesund is the largest hub.

This list covers company matches for underwater maintenance service providers 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

87Companies

2,807Contacts tracked

986Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest underwater maintenance service providers based in Norway

Ranked by team size

Top 25 of 87 company matches for underwater maintenance service providers 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	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
3	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
4	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
5	Swire Seabed	Exact match	Bergen, NorwayHQ recorded Nov 6, 2026	51-200	43 contacts →
	Exact match “Swire Seabed provides a highly flexible range of integrated subsea services to the global Oil & Gas and renewables industries.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	Innova	Exact match	Sandnes, NorwayHQ recorded Nov 6, 2026	51-200	40 contacts →
	Exact match “Established in 1997, Innova is a leading supplier of services, equipment and solutions to the international underwater industry.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	Wellconnection Group	Exact match	Stavanger, NorwayHQ recorded Nov 6, 2026	51-200	38 contacts →
	Exact match “WellConnection Group is the leading company within inspection, maintenance and repair services (IMR) for drilling and subsea equipment on the Norwegian Continental Shelf.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	Otech Marine Services	Exact match	Haugesund, NorwayHQ recorded Nov 6, 2026	11-50	31 contacts →
	Exact match “Diving & maintenance contractor operating worldwide.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	Remotion AS	Exact match	Sandnes, NorwayHQ recorded Nov 6, 2026	11-50	28 contacts →
	Exact match “Remotion delivers unique hull repair, maintenance and inspection services based on our technology of magnetic robots (M-ROV).” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	Sjøentreprenøren AS	Exact match	Bergen, NorwayHQ recorded Nov 6, 2026	11-50	26 contacts →
	Exact match “Vi utfører oppdrag innen mudring, sprenging, riving, konstruksjon, inspeksjon og mye mer under vann.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	Techno Dive	Exact match	Avaldsnes, NorwayHQ recorded Nov 6, 2026	11-50	26 contacts →
	Exact match “Techno Dive is your partner for Safe and Efficient Subsea Work.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	Oceantech Innovation AS	Exact match	Trondheim, NorwayHQ recorded Nov 6, 2026	11-50	25 contacts →
	Exact match “OceanTech is a technology driven company with long experience and proven track record in the Splash Sone.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	North Well Gefro AS	Exact match	Randaberg, NorwayHQ recorded Nov 6, 2026	51-200	22 contacts →
	Exact match “NWG offers rapid response and fast delivery of repairs and maintenance of mechanical, drilling and subsea equipment.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	Bømlo Skipsservice	Exact match	Bømlo, NorwayHQ recorded Nov 6, 2026	11-50	21 contacts →
	Exact match “Bømlo Skipsservice er et moderne og fleksibelt serviceverksted med høy gjennomføringsevne og bred teknisk kompetanse.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	NUI AS	Exact match	Bergen, NorwayHQ recorded Nov 6, 2026	11-50	20 contacts →
	Exact match “Since 1976, we have delivered subsea services and competence to the oil and gas industry.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	NPT AS	Exact match	4312, NorwayHQ recorded Nov 6, 2026	51-200	18 contacts →
	Exact match “NPT AS er et selskap som tilbyr spesialtjenester og utleie av utstyr til offshore, marine og Subsea industrien.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	FOX Subsea AS	Exact match	Bryne, NorwayHQ recorded Nov 6, 2026	11-50	18 contacts →
	Exact match “FOX Subsea is an integrated service and expertise for SPS-contractors' total scope of work.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	Submara	Exact match	Sætre, NorwayHQ recorded Nov 6, 2026	201-500	17 contacts →
	Exact match “Submara is one of Norway’s leading providers of underwater services, delivering commercial diving, ROV, and survey solutions across the country.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	Submara Prosjekt AS	Exact match	Tofte, NorwayHQ recorded Nov 6, 2026	11-50	17 contacts →
	Exact match “Dykkerteknikk AS ble etablert i 1976 og er et godt etablert selskap innen undervannsarbeid og marine operasjoner.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	IKM Promech AS	Exact match	Sola, NorwayHQ recorded Nov 6, 2026	11-50	17 contacts →
	Exact match “IKM Promech provides new sales, comprehensive pump repair and services on various pump types including centrifugal, vacuum, mud, circulating, submersible and others.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	Valen Marina AS	Exact match	Kolltveit, NorwayHQ recorded Nov 6, 2026	11-50	17 contacts →
	Exact match “Valen Marina AS er en sjøentreprenør som har sitt virke innenfor dykke- og ROV tjenester.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	A. Olufsen Ship & Offshore AS	Exact match	Haugesund, NorwayHQ recorded Nov 6, 2026	11-50	16 contacts →
	Exact match “A.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	Mainstay AS	Exact match	Sandvika, NorwayHQ recorded Nov 6, 2026	11-50	12 contacts →
	Exact match “The subsurface cleaning specialist.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	Multi Solutions AS	Exact match	Sunde, NorwayHQ recorded Nov 6, 2026	1-10	11 contacts →
	Exact match “Providing goods and services to the marine / offshore.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	ROVAS	Exact match	Florvåg, NorwayHQ recorded Nov 6, 2026	1-10	11 contacts →
	Exact match “Inspection, survey and service provider, for the inshore and offshore sector.” 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 “underwater maintenance service providers”. 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 87 underwater maintenance service providers based in Norway

See the full list, filter by size, metro and specialty, and access 986 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Underwater maintenance service providers based in Norway at a glance

As of Nov 6, 2026

35.1%Verified-email coverage

32.3Average contacts per company

11-50Median size (employees)

8.0%Largest-city concentration · Haugesund

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

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 87 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 “underwater maintenance service providers” 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 986 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 “underwater maintenance service providers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many underwater maintenance service providers are there based in Norway?

RevenueBase identified 87 company matches for underwater maintenance service providers 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 underwater maintenance service providers?

Haugesund leads with 7 company records, followed by Oslo (5) and Bergen (4).

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 986 professional contacts with verified work emails tracked across these 87 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.

Ready to reach these companies? Verified emails and direct dials for all 87 underwater maintenance service providers based in Norway. Start with a free account, no credit card.

Download this list →

Related lists

Underwater maintenance service providers by geography

Browse the directory

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.