Company lists · Data refreshed September 2026

Top 25 Subsea energy companies based in Brazil

Name: Subsea energy companies based in Brazil
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 18, 2026 83 companies tracked

RevenueBase identified 83 subsea energy companies headquartered in Brazil as of September 2026 and tracks 12,133 professional contacts across them, including 1,972 with verified work emails. Rio De Janeiro is the largest hub.

This list covers subsea energy companies headquartered in Brazil, 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 18, 2026.

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 18, 2026 86% judged on-target in blind review

83Companies

12,133Contacts tracked

1,972Verified emails

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The 25 largest subsea energy companies based in Brazil

Ranked by team size

Top 25 of 83 subsea energy companies based in Brazil, ranked by team size, largest first. Data refreshed Sep 18, 2026. RevenueBase Smart Search rates how each company's information relates to subsea energy 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	Gran Services S.A	Indirect evidence	Macaé, BrazilHQ checked Sep 18, 2026	1,001-5,000	2,752 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 18, 2026
2	OCYAN	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 18, 2026	1,001-5,000	2,427 contacts →
	Indirect evidence “A OCYAN atua há décadas na prestação de serviços para o setor de óleo e gás upstream, estruturando suas operações em três frentes de atuação.” Source: RevenueBase Database · checked Sep 18, 2026
3	Grupo CBO	Indirect evidence	Niterói, BrazilHQ checked Sep 18, 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 18, 2026
4	Sapura Navegação Marítima S.A	Strong evidence	Rio De Janeiro, BrazilHQ checked Sep 18, 2026	501-1,000	575 contacts →
	Strong evidence “Seagems is a Brazilian company specialized in subsea services, a joint venture between two international key players in their markets, Paratus Energy and Sapura Energy.” Source: RevenueBase Database · checked Sep 18, 2026
5	Step OIL & GAS	Indirect evidence	Rio Das Ostras, BrazilHQ checked Sep 18, 2026	201-500	444 contacts →
	Indirect evidence “STEP OIL & GAS is a company with operations in Brazil and a focus on the fabrication sector of the oil and gas industry.” Source: RevenueBase Database · checked Sep 18, 2026
6	Granenergia	Partial evidence	Rio De Janeiro, BrazilHQ checked Sep 18, 2026	201-500	304 contacts →
	Partial evidence “Founded in 2011 by the Gradin family, GranEnergia is an Integrated Offshore Energy Services Company, headquartered in Brazil and the Netherlands.” Source: RevenueBase Database · checked Sep 18, 2026
7	SSE Group	Partial evidence	Macaé, BrazilHQ checked Sep 18, 2026	51-200	195 contacts →
	Partial evidence “Presente no setor de Petróleo e Gás desde 2009, somos uma empresa de serviços competente e confiável, focada em fornecer engenheiros subsea altamente qualificados para garantir a…” Source: RevenueBase Database · checked Sep 18, 2026
8	Compagnie Maritime Monégasque CMM	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 18, 2026	51-200	185 contacts →
	Indirect evidence “CMM: Brazil's Aspiring Leader in Sustainable Offshore Operations At CMM, we're on a mission to redefine the offshore industry in Brazil with sustainability at our core.” Source: RevenueBase Database · checked Sep 18, 2026
9	Oilequip	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 18, 2026	201-500	127 contacts →
	Indirect evidence “A Oilequip Produtos e Serviços Ltda.” Source: RevenueBase Database · checked Sep 18, 2026
10	Teksea	Partial evidence	Blumenau, BrazilHQ checked Sep 18, 2026	201-500	116 contacts →
	Partial evidence “A TEKSEA Sistemas de Energia, com sede no Brasil, é uma empresa diversificada em produtos nos segmentos naval, industrial e de energias renováveis, concentrada em melhorar a…” Source: RevenueBase Database · checked Sep 18, 2026
11	OSX	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 18, 2026	11-50	105 contacts →
	Indirect evidence “Somos a OSX, empresa do Grupo EBX que atua na indústria naval e offshore, oferecendo soluções integradas de engenharia, construção, fretamento, e serviços de Operação e Manutenção…” Source: RevenueBase Database · checked Sep 18, 2026
12	Simeros Technologies	Partial evidence	Cachoeirinha, BrazilHQ checked Sep 18, 2026	51-200	85 contacts →
	Partial evidence “SIMEROS is a Brazilian engineering company specialized in developing high-performance solutions for the subsea oil and gas sector, with a focus on SURF (Subsea Umbilicals, Risers…” Source: RevenueBase Database · checked Sep 18, 2026
13	BRS Robótica Submarina	Indirect evidence	Macaé, BrazilHQ checked Sep 18, 2026	11-50	47 contacts →
	Indirect evidence “Founded in 2017, BRS Robótica Submarina operates within the heart of Brazil's thriving Oil and Gas Industry.” Source: RevenueBase Database · checked Sep 18, 2026
14	Solstad Offshore	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 18, 2026	501-1,000	41 contacts →
	Indirect evidence “Solstad Offshore is a company based out of Rua Lauro Muller 116, sl.” Source: RevenueBase Database · checked Sep 18, 2026
15	Underocean Serviços Maritimos	Indirect evidence	Macaé, BrazilHQ checked Sep 18, 2026	51-200	35 contacts →
	Indirect evidence “UNDEROCEAN operates in the Oil & Gas sector offering offshore project management services and ROV solutions, including equipment rental, maintenance, underwater inspection…” Source: RevenueBase Database · checked Sep 18, 2026
16	Sea1 Offshore DO Brasil S.A	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 18, 2026	201-500	33 contacts →
	Indirect evidence “A Sea1 Offshore do Brasil S.A.” Source: RevenueBase Database · checked Sep 18, 2026
17	LTS Coppe Ufrj- Subsea Technology Laboratory	Partial evidence	Rio De Janeiro, BrazilHQ checked Sep 18, 2026	11-50	26 contacts →
	Partial evidence “Welcome to Subsea Technology Laboratory (LTS - Laboratório de Tecnologia Submarina)!” Source: RevenueBase Database · checked Sep 18, 2026
18	Oceanserv	Indirect evidence	Rio Das Ostras, BrazilHQ checked Sep 18, 2026	11-50	21 contacts →
	Indirect evidence “Estabilished in 2010 in Brazil, Oceanserv is an Underwater Solution Company, specialized in services to the Oil and Gas industry.” Source: RevenueBase Database · checked Sep 18, 2026
19	Quartic Advisory	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 18, 2026	11-50	14 contacts →
	Indirect evidence “Created in 2015 with a startup mindset, we are a team of engineers acting with the integrity and robustness of a law firm.” Source: RevenueBase Database · checked Sep 18, 2026
20	EFEN	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 18, 2026	201-500	13 contacts →
	Indirect evidence “A Efen é mais do que um fornecedor de combustíveis marítimos.” Source: RevenueBase Database · checked Sep 18, 2026
21	Iara Systems	Indirect evidence	Recife, BrazilHQ checked Sep 18, 2026	11-50	11 contacts →
	Indirect evidence “Iara Systems is a start-up company committed with innovative and reliable solutions for the offshore oil & gas industry.” Source: RevenueBase Database · checked Sep 18, 2026
22	Id-Subsea	Indirect evidence	São José Dos Campos, BrazilHQ checked Sep 18, 2026	1-10	11 contacts →
	Indirect evidence “Desenvolvemos tecnologia submarina nacional que atende aos padrões técnicos mais exigentes da indústria offshore, com a agilidade e proximidade que apenas uma empresa brasileira…” Source: RevenueBase Database · checked Sep 18, 2026
23	Bravocean Offshore Services	Indirect evidence	Florianópolis, BrazilHQ checked Sep 18, 2026	1-10	10 contacts →
	Indirect evidence “Bravocean Offshore Services ltda.” Source: RevenueBase Database · checked Sep 18, 2026
24	Industrias FAP DO Brasil	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 18, 2026	1-10	9 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 18, 2026
25	CBV Offshore	Indirect evidence	Niteroi, BrazilHQ checked Sep 18, 2026	11-50	8 contacts →
	Indirect evidence “CBV Offshore Ltda Is your new choice on the Engineering / Services for Offshore / Marine projects.” Source: RevenueBase Database · checked Sep 18, 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: subsea energy 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 subsea energy companies.
Partial evidence: Its own public description names part of subsea energy companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name subsea energy 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 83 subsea energy companies based in Brazil

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Subsea energy companies based in Brazil at a glance

As of Sep 18, 2026

16.3%Verified-email coverage

146.2Average contacts per company

11-50Median size (employees)

36.1%Largest-city concentration · Rio De Janeiro

Sep 18, 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 Brazil, so it is reported there. Company counts and contact totals on this page are exact for Brazil, over 83 companies.

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 subsea energy 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.
What qualifies: Companies headquartered in Brazil whose own description of what they do matches “subsea energy 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 subsea energy 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 subsea energy companies, and records with no verified work email. Companies headquartered outside Brazil are excluded even when they keep an office there.
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, 1,972 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 18, 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.

Subsea energy companies by metro

Subsea energy companies in Rio De Janeiro30

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 subsea energy 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 subsea energy companies are there based in Brazil?

RevenueBase identified 83 subsea energy companies headquartered in Brazil 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?

Gran Services S.A, headquartered in Macae, tops this list with the largest team on record.

Which city has the most subsea energy companies?

Rio De Janeiro leads with 30 headquartered companies, followed by Rio Das Ostras (9) and Macae (8).

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 1,972 verified decision-maker contacts tracked across these 83 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 18, 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 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.