Company lists · Data refreshed September 2026

Top 20 Hydrographic surveying companies based in Brazil

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

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 55 companies tracked

RevenueBase identified 55 hydrographic surveying companies headquartered in Brazil as of September 2026 and tracks 1,145 professional contacts across them, including 171 with verified work emails. Rio De Janeiro is the largest hub.

This list covers hydrographic surveying 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 20, 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 20, 2026 86% judged on-target in blind review

55Companies

1,145Contacts tracked

171Verified emails

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The 20 largest hydrographic surveying companies based in Brazil

Ranked by team size

Top 20 of 55 hydrographic surveying companies based in Brazil, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to hydrographic surveying 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	Topocart Topografia, Engenharia E Aerolevantamentos	Indirect evidence	Brasília, BrazilHQ checked Sep 20, 2026	201-500	215 contacts →
	Indirect evidence “A Topocart é uma empresa de consultoria especializada na área de aerolevantamento, geoprocessamento, cartografia, sistemas de informação geográfica, cadastro técnico…” Source: RevenueBase Database · checked Sep 20, 2026
2	Geodeep	Indirect evidence	Maceió, BrazilHQ checked Sep 20, 2026	51-200	67 contacts →
	Indirect evidence “A GEODEEP é uma empresa especializada em diversos tipos de serviços onshore, offshore e zona de transição, em especial, levantamentos de dados geofísicos, geológicos e geotécnicos.” Source: RevenueBase Database · checked Sep 20, 2026
3	Rural Tech	Indirect evidence	Brasilia, BrazilHQ checked Sep 20, 2026	51-200	55 contacts →
	Indirect evidence “Founded in 1984, Rural Tech has over 40 years of experience delivering fast, accurate, and integrated solutions in Topography, Cartography, Geodesy, Bathymetry, Hydrometry…” Source: RevenueBase Database · checked Sep 20, 2026
4	Salt Engenharia E Meio Ambiente	Indirect evidence	São Paulo, BrazilHQ checked Sep 20, 2026	11-50	47 contacts →
	Indirect evidence “Brazilian company - Environmental Consultancy, Services and Projects:\| Inland fresh-waters \| Estuaries \| Coastal Waters \| Oceanic waters \| We act as a group, divided into three…” Source: RevenueBase Database · checked Sep 20, 2026
5	Oceânica	Indirect evidence	São Paulo, BrazilHQ checked Sep 20, 2026	11-50	45 contacts →
	Indirect evidence “Part of HBR Holding Brazil, Oceânica is a Brazilian consulting company for naval, offshore and nautical industries, with focus in hydrodynamics, mooring, dynamic positioning…” Source: RevenueBase Database · checked Sep 20, 2026
6	AFC Geofísica	Indirect evidence	Porto Alegre, BrazilHQ checked Sep 20, 2026	11-50	40 contacts →
	Indirect evidence “Founded in 1997, the company specialises in the acquisition, processing and interpretation of terrestrial and aquatic geophysical data, working in the areas of Mining…” Source: RevenueBase Database · checked Sep 20, 2026
7	Mitang Brasil	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 20, 2026	11-50	33 contacts →
	Indirect evidence “Nosso core Business: Survey and Positinging e Soluções Tecnológicas e Inovadoras.” Source: RevenueBase Database · checked Sep 20, 2026
8	Spectrah Oceanografia E Meio Ambiente	Indirect evidence	Florianópolis, BrazilHQ checked Sep 20, 2026	1-10	21 contacts →
	Indirect evidence “Atuamos na área de meio Ambiente e oceanografia, para a execução de serviços e projetos de análise, anteprojeto, arbitramento, assessoria, assistência, auditoria, avaliação…” Source: RevenueBase Database · checked Sep 20, 2026
9	Labmar Geociências Tecnologia Aplicada AOS Recursos Hídricos E Ambientais	Indirect evidence	Serra, BrazilHQ checked Sep 20, 2026	11-50	19 contacts →
	Indirect evidence “Labmar Geociências é uma empresa especializada em levantamentos e estudos hidrológicos, fluviométricos, hidrogeológicos e análises laboratoriais de solos, sedimentos, particulados…” Source: RevenueBase Database · checked Sep 20, 2026
10	Naabsa Shipping & Marine Surveyors	Indirect evidence	Santos, BrazilHQ checked Sep 20, 2026	11-50	17 contacts →
	Indirect evidence “On a busy day or a week, we can look after crew changes formalities and handing over process, checking stowage plan and max cargo intake, draft restrictions, ports line-up, making…” Source: RevenueBase Database · checked Sep 20, 2026
11	Hidrotop Construções, Importação E Comércio Ltda	Indirect evidence	Santos, BrazilHQ checked Sep 20, 2026	11-50	16 contacts →
	Indirect evidence “A HIDROTOP é uma empresa de engenharia marítima, fundada em 1987, sediada em Santos/SP, inscrita no Centro de Hidrografia da Marinha do Brasil (CHM), no Centro Almirante Moraes…” Source: RevenueBase Database · checked Sep 20, 2026
12	Noir - Naval Ocean	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 20, 2026	11-50	16 contacts →
	Indirect evidence “Empresa de Engenharia localizada no Rio de Janeiro/RJ.” Source: RevenueBase Database · checked Sep 20, 2026
13	Aquasub Mergulho Ltda	Indirect evidence	Maricá, BrazilHQ checked Sep 20, 2026	11-50	14 contacts →
	Indirect evidence “Especializada em inspeção, manutenção e reparos subaquáticos, com expertise em pesquisas, assessorias, planejamentos e execução de projetos.” Source: RevenueBase Database · checked Sep 20, 2026
14	Wams Subsea	Partial evidence	Rio De Janeiro, BrazilHQ checked Sep 20, 2026	11-50	9 contacts →
	Partial evidence “With a massive passion for the innovative technology in the field of offshore surveying and subsea operations WAMS was created as a platform to deliver the best technology to our…” Source: RevenueBase Database · checked Sep 20, 2026
15	A2	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 20, 2026	1-10	7 contacts →
	Indirect evidence “A2 MARINE SOLUTION Conta com a experiência de seus profissionais com mais de 15 anos no mercado, focada exclusivamente em soluções e fornecimento de equipamentos para as…” Source: RevenueBase Database · checked Sep 20, 2026
16	Plamar Tecnologia Marítima	Indirect evidence	Santos, BrazilHQ checked Sep 20, 2026	11-50	5 contacts →
	Indirect evidence “Founded in 2017 in Santos, Plamar is a professional diving company that provides underwater inspections, IACS Class surveys, hull cleaning, propeller polishing, entanglement…” Source: RevenueBase Database · checked Sep 20, 2026
17	Engenharia CF	Indirect evidence	Teixeiras, BrazilHQ checked Sep 20, 2026	1-10	4 contacts →
	Indirect evidence “A Engenharia CF, é uma empresa fundada em 2013 com o objetivo de prestar serviços de Topografia, Batimetria e Aerolevantamento com tecnologia de ponta para gerar dados geográficos…” Source: RevenueBase Database · checked Sep 20, 2026
18	Aster Engenharia	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 20, 2026	1-10	3 contacts →
	Indirect evidence “ASTER Engenharia Ltda.(ASTER) is a company built in 2016 when colleagues merged over 15 years of offshore/onshore personal experiences to develop own business.” Source: RevenueBase Database · checked Sep 20, 2026
19	Precursore	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 20, 2026	1-10	3 contacts →
	Indirect evidence “Empresa de Engenharia Portuária e Hidrografia, Entidade Executante (EE) de Levantamentos Hidrográficos (LHs).” Source: RevenueBase Database · checked Sep 20, 2026
20	CSA Ciências Oceânicas	Indirect evidence	Vitória, BrazilHQ checked Sep 20, 2026	1-10	3 contacts →
	Indirect evidence “CSA Ocean Sciences Inc.” 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: hydrographic surveying 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 hydrographic surveying companies.
Partial evidence: Its own public description names part of hydrographic surveying companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name hydrographic surveying 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 20 of 55 hydrographic surveying companies based in Brazil

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Hydrographic surveying companies based in Brazil at a glance

As of Sep 20, 2026

14.9%Verified-email coverage

20.8Average contacts per company

11-50Median size (employees)

23.6%Largest-city concentration · Rio De Janeiro

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

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 55 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 hydrographic surveying 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 “hydrographic surveying 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 hydrographic surveying 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 hydrographic surveying 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, 171 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.

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 hydrographic surveying 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 hydrographic surveying companies are there based in Brazil?

RevenueBase identified 55 hydrographic surveying 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?

Topocart Topografia, Engenharia E Aerolevantamentos, headquartered in Brazil, tops this list with the largest team on record.

Which city has the most hydrographic surveying companies?

Rio De Janeiro leads with 13 headquartered companies, followed by Vitoria (5) and Niteroi (4).

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 171 verified decision-maker contacts tracked across these 55 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.

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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.