Company lists · Data refreshed September 2026

Top 25 Deep sea exploration companies based in Norway

RevenueBase identified 74 company matches for deep sea exploration companies associated with Norway as of September 2026 and tracks 7,464 professional contacts across them, including 2,508 with verified work emails. Oslo is the largest hub.

This list covers company matches for deep sea exploration 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 19, 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 19, 2026 How this list was built
74Companies
7,464Contacts tracked
2,508Verified emails
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The 25 largest deep sea exploration companies based in Norway

Ranked by team size
Top 25 of 74 company matches for deep sea exploration companies based in Norway, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 19, 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 19, 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 19, 2026 · View company records in RevenueBase
2Exact matchLaksevåg, NorwayHQ recorded Sep 19, 20261,001-5,0001,031 contacts →

Exact match

“Shearwater is a global marine geoscience and technology business.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
3Exact matchHorten, NorwayHQ recorded Sep 19, 20261,001-5,000638 contacts →

Exact match

“In a constantly changing market environment, Kongsberg Discovery is serving the ocean space from the deepest sea to the outer space.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
4Exact matchUlsteinvik, NorwayHQ recorded Sep 19, 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 19, 2026 · View company records in RevenueBase
5Exact matchHaugesund, NorwayHQ recorded Sep 19, 2026201-500454 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
6Exact matchLangevag, NorwayHQ recorded Sep 19, 2026501-1,000308 contacts →

Exact match

“Offshore Shipping Company.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
7Exact matchFosnavåg, NorwayHQ recorded Sep 19, 2026201-500288 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8Exact matchFosnavåg Brygge 2.etg, NorwayHQ recorded Sep 19, 2026501-1,000201 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 · Sep 19, 2026 · View company records in RevenueBase
9Exact matchBergen, NorwayHQ recorded Sep 19, 2026501-1,000194 contacts →

Exact match

“SeaBird Exploration is a wholly owned subsidiary of SED Energy Holdings Plc, which is listed on Euronext Oslo Børs.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10Exact matchAalesund, NorwayHQ recorded Sep 19, 2026201-500120 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 · Sep 19, 2026 · View company records in RevenueBase
11Exact matchTrondheim, NorwayHQ recorded Sep 19, 202651-20079 contacts →

Exact match

“We are a global leader and pioneer in advanced maritime drones (USVs) and maritime autonomy.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
12Exact matchAsker, NorwayHQ recorded Sep 19, 202651-20071 contacts →

Exact match

“Argeo was established by an experienced team of professionals in 2017 with HQ in Asker, Norway.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
13Exact matchBønes, NorwayHQ recorded Sep 19, 202611-5044 contacts →

Exact match

“Mohn Drilling AS is a diving and ROV contractor based in Bergen, Norway, and the main area of activity is offshore Tierra del Fuego, Argentina.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14Exact matchBergen, NorwayHQ recorded Sep 19, 202651-20040 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 · Sep 19, 2026 · View company records in RevenueBase
15Exact matchSandnes, NorwayHQ recorded Sep 19, 202611-5025 contacts →

Exact match

“Allton is a Technology & Service company that specialises in Ocean Bottom Node data acquisition for Hydrocarbon Exploration and Production (E&P), CO2 Measurement Monitoring and…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
16Exact matchAvaldsnes, NorwayHQ recorded Sep 19, 202611-5025 contacts →

Exact match

“Techno Dive is your partner for Safe and Efficient Subsea Work.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
17Exact matchBergen, NorwayHQ recorded Sep 19, 202611-5022 contacts →

Exact match

“Vi utfører oppdrag innen mudring, sprenging, riving, konstruksjon, inspeksjon og mye mer under vann.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
18Exact matchTofte, NorwayHQ recorded Sep 19, 202611-5021 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 · Sep 19, 2026 · View company records in RevenueBase
19Exact matchKristiansund, NorwayHQ recorded Sep 19, 202611-5021 contacts →

Exact match

“Deep C provides Seabed Intervention Services that simply fit together.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
20Exact matchÅlesund, NorwayHQ recorded Sep 19, 202611-5020 contacts →

Exact match

“Our revolutionary technology for non-invasive, precision seabed harvesting not only preserves, but can also help to revitalise fragile and often overlooked ecosystems at the…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
21Exact matchOslo, NorwayHQ recorded Sep 19, 202611-5020 contacts →

Exact match

“FSubsea is a Norwegian ocean technology company focused on climate-smart subsea desalination systems, as well as robust subsea pumping systems for a variety of energy and green…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
22Exact matchKolltveit, NorwayHQ recorded Sep 19, 202611-5018 contacts →

Exact match

“Valen Marina AS er en sjøentreprenør som har sitt virke innenfor dykke- og ROV tjenester.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
23Exact matchTrondheim, NorwayHQ recorded Sep 19, 202611-5017 contacts →

Exact match

“Eelume is a leading provider of innovative underwater technology solutions.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
24Exact matchOslo, NorwayHQ recorded Sep 19, 2026201-50014 contacts →

Exact match

“General Oceans is a global group of companies dedicated to providing advanced underwater technology including sensors, systems and robotic solutions.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
25Exact matchLaksevåg, NorwayHQ recorded Sep 19, 20261-108 contacts →

Exact match

“Specialists in underwater technology and machine vision”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase

Showing 25 of 74 deep sea exploration companies based in Norway

See the full list, filter by size, metro and specialty, and access 2,508 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Deep sea exploration companies based in Norway at a glance

As of Sep 19, 2026
33.6%Verified-email coverage
100.9Average contacts per company
11-50Median size (employees)
13.5%Largest-city concentration · Oslo
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
30
11-50
24
51-200
8
201-500
5
501-1,000
4
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 74 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 “deep sea exploration 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 2,508 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 19, 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 “deep sea exploration companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many deep sea exploration companies are there based in Norway?

RevenueBase identified 74 company matches for deep sea exploration 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 deep sea exploration companies?

Oslo leads with 10 company records, followed by Bergen (8) and Trondheim (6).

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 2,508 professional contacts with verified work emails tracked across these 74 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 19, 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.