Company lists · Data refreshed September 2026

Top 25 Ocean survey companies worldwide

Name: Ocean survey companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 2,762 companies tracked

RevenueBase identified 2,762 ocean survey companies worldwide as of September 2026 and tracks 65,675 professional contacts across them, including 13,848 with verified work emails. The United States is the largest market and Singapore the largest hub.

This list covers ocean survey companies worldwide, 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. Country and city lists for ocean survey companies follow the table.

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

2,762Companies

65,675Contacts tracked

13,848Verified emails

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

The 25 largest ocean survey companies worldwide

Ranked by team size

Top 25 of 2,762 ocean survey companies worldwide, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to ocean survey companies: 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	Indirect evidence	Bergen, NorwayHQ checked Sep 20, 2026	5,001-10,000	2,942 contacts →
	Indirect 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	Allseas	Indirect evidence	Châtel-saint-denis, SwitzerlandHQ checked Sep 20, 2026	1,001-5,000	2,554 contacts →
	Indirect evidence “Allseas is a world-leading contractor in the offshore energy market.” Source: RevenueBase Database · checked Sep 20, 2026
3	Free Lancer	Indirect evidence	BrazilHQ checked Sep 20, 2026	n/a	2,224 contacts →
	Indirect evidence “Rov company.” Source: RevenueBase Database · checked Sep 20, 2026
4	Grupo CBO	Indirect evidence	Niterói, BrazilHQ checked Sep 20, 2026	1,001-5,000	1,847 contacts →
	Indirect evidence “O Grupo CBO é uma das maiores empresas de apoio marítimo do Brasil.” Source: RevenueBase Database · checked Sep 20, 2026
5	Deepocean	Partial evidence	Oslo, NorwayHQ checked Sep 20, 2026	1,001-5,000	1,375 contacts →
	Partial evidence “DeepOcean is a technology-driven, independent solution provider in the ocean space.” Source: RevenueBase Database · checked Sep 20, 2026
6	CCC Underwater Engineering S.A.L	Indirect evidence	Abu Dhabi, United Arab EmiratesHQ checked Sep 20, 2026	201-500	1,279 contacts →
	Indirect evidence “(Underwater Engineering) S.A.L was established in 1976.” Source: RevenueBase Database · checked Sep 20, 2026
7	Shearwater Geoservices	Indirect evidence	Laksevåg, NorwayHQ checked Sep 20, 2026	1,001-5,000	1,031 contacts →
	Indirect evidence “Shearwater is a global marine geoscience and technology business.” Source: RevenueBase Database · checked Sep 20, 2026
8	Wintermar Offshore Marine TBK	Indirect evidence	Kebayoran Lama, IndonesiaHQ checked Sep 20, 2026	501-1,000	972 contacts →
	Indirect evidence “As a one-stop offshore marine services company, Wintermar Offshore Marine Group strives to support all types of offshore operations, offering innovative vessel and logistical…” Source: RevenueBase Database · checked Sep 20, 2026
9	Micoperi SRL	Indirect evidence	Ravenna, ItalyHQ checked Sep 20, 2026	201-500	841 contacts →
	Indirect evidence “MICOPERI has been active in the marine sector since 1946 when the company was incorporated as a salvage company to free the shipping routes from vessels sunk during the Second…” Source: RevenueBase Database · checked Sep 20, 2026
10	Geokinetics INC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 20, 2026	501-1,000	834 contacts →
	Indirect evidence “Headquartered in Houston, Texas, Geokinetics is one of the world’s largest independent land and seafloor geophysical companies.” Source: RevenueBase Database · checked Sep 20, 2026
11	Kongsberg Discovery	Partial evidence	Horten, NorwayHQ checked Sep 20, 2026	1,001-5,000	638 contacts →
	Partial evidence “In a constantly changing market environment, Kongsberg Discovery is serving the ocean space from the deepest sea to the outer space.” Source: RevenueBase Database · checked Sep 20, 2026
12	Pt. Anindya Wiraputra Konsult	Partial evidence	Jakarta, IndonesiaHQ checked Sep 20, 2026	1,001-5,000	623 contacts →
	Partial evidence “ANINDYA is an independent surveying company that provides quality and quantity superintending service for the coal and minerals industry, the oil and gas sector as well as marine…” Source: RevenueBase Database · checked Sep 20, 2026
13	Gardline Limited	Partial evidence	Great Yarmouth, United KingdomHQ checked Sep 20, 2026	501-1,000	545 contacts →
	Partial evidence “Gardline is a best-in-class provider of geophysical, geotechnical and environmental marine surveys.” Source: RevenueBase Database · checked Sep 20, 2026
14	Saexploration	Indirect evidence	Houston, TX, United StatesHQ checked Sep 20, 2026	201-500	521 contacts →
	Indirect evidence “SAExploration offers a full range of geophysical ground acquisition services from design, prospecting, drilling, recording and analysis of field quality, as well as mobilization…” Source: RevenueBase Database · checked Sep 20, 2026
15	Island Offshore	Indirect evidence	Ulsteinvik, NorwayHQ checked Sep 20, 2026	501-1,000	501 contacts →
	Indirect 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
16	UTEC	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 20, 2026	201-500	490 contacts →
	Indirect evidence “UTEC, Acteon’s Geo-services business line, harnesses data to optimise designs, save time and maximise your project’s economic value by providing a holistic understanding of the…” Source: RevenueBase Database · checked Sep 20, 2026
17	asso.subsea	Indirect evidence	Elefsina, GreeceHQ checked Sep 20, 2026	501-1,000	478 contacts →
	Indirect evidence “ASSO group is a technology driven company specialized to provide services and sub-sea equipment for underwater works in the marine and offshore field.” Source: RevenueBase Database · checked Sep 20, 2026
18	Global Maritime	Indirect evidence	Stavanger, NorwayHQ checked Sep 20, 2026	201-500	472 contacts →
	Indirect evidence “Global Maritime delivers integrated marine solutions for a changing offshore world.” Source: RevenueBase Database · checked Sep 20, 2026
19	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
20	Geoquip Marine	Indirect evidence	9001 St. Gallen, SwitzerlandHQ checked Sep 20, 2026	201-500	422 contacts →
	Indirect evidence “Geoquip Marine is a geotechnical data acquisition company safely delivering offshore geotechnical site investigations and engineering services to clients worldwide.” Source: RevenueBase Database · checked Sep 20, 2026
21	Hydrodive Group	Partial evidence	Lagos, NigeriaHQ checked Sep 20, 2026	201-500	409 contacts →
	Partial evidence “HydroDive provides a broad range of Marine Vessels, Air, Mixed Gas and Saturation Diving, ROV, AUV and Survey Services primarily to the offshore & inshore Petroleum Industry of…” Source: RevenueBase Database · checked Sep 20, 2026
22	James Fisher And Sons PLC	Partial evidence	Barrow-in-furness, United KingdomHQ checked Sep 20, 2026	1,001-5,000	403 contacts →
	Partial evidence “Above, below and beyond the world’s oceans.” Source: RevenueBase Database · checked Sep 20, 2026
23	Coastal Marine Construction & Engineering LTD	Indirect evidence	Mira Bhayander, IndiaHQ checked Sep 20, 2026	201-500	403 contacts →
	Indirect evidence “COMACOE - Coastal Marine Construction & Engineering Ltd is an experienced marine services contractor with operations in multiple geographies offering a range of service over the…” Source: RevenueBase Database · checked Sep 20, 2026
24	Briggs Marine	Indirect evidence	Burntisland, United KingdomHQ checked Sep 20, 2026	501-1,000	387 contacts →
	Indirect evidence “Briggs Marine is a leading provider of marine and environmental services, specialising in port and marine operations, subsea and environmental support and vessel charter.” Source: RevenueBase Database · checked Sep 20, 2026
25	Horizon Geosciences	Partial evidence	Sharjah, United Arab EmiratesHQ checked Sep 20, 2026	201-500	381 contacts →
	Partial evidence “Headquartered in the UAE, Horizon Geosciences provide marine survey and geotechnical services to an array of clients around the world.” 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: ocean survey companies. 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 ocean survey companies.
Partial evidence: Its own public description names part of ocean survey companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name ocean survey companies. 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 2,762 ocean survey companies worldwide

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 13,848 reachable decision-makers.

Free signup · no credit card

View the full list →

Ocean survey companies worldwide at a glance

As of Sep 20, 2026

21.1%Verified-email coverage

23.8Average contacts per company

1-10Median size (employees)

1.7%Largest-city concentration · Singapore

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

1,433

11-50

889

51-200

295

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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 ocean survey companies, 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.
Coverage: Every country. Country and city lists for ocean survey companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “ocean survey companies”. 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 ocean survey companies), 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 ocean survey companies, and records with no verified work email.
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, 13,848 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.

Ocean survey companies by location

18 lists · largest first

Every Ocean survey companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 ocean survey companies, 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 ocean survey companies are there worldwide?

RevenueBase identified 2,762 ocean survey companies worldwide 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 country has the most ocean survey companies?

The United States leads with 369 companies, followed by the United Kingdom (299) and Brazil (115). Every ocean survey companies list by country and city is linked on this page.

Which city has the most ocean survey companies?

Singapore leads with 46 headquartered companies, followed by Rio De Janeiro (34) and Houston (31).

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 13,848 verified decision-maker contacts tracked across these 2,762 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.

Ready to reach these companies? Verified emails and direct dials for all 2,762 ocean survey companies worldwide. Start with a free account, no credit card.

Download this list →

Related lists

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 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.