Company lists · Data refreshed September 2026

Top 10 Subsea engineering companies based in Türkiye

RevenueBase identified 49 subsea engineering companies headquartered in Türkiye as of September 2026 and tracks 2,001 professional contacts across them, including 286 with verified work emails. Istanbul is the largest hub.

This list covers subsea engineering companies headquartered in Türkiye, 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
49Companies
2,001Contacts tracked
286Verified emails
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The 10 largest subsea engineering companies based in Türkiye

Ranked by team size
Top 10 of 49 subsea engineering companies based in Türkiye, ranked by team size, largest first. Data refreshed Sep 18, 2026. RevenueBase Smart Search rates how each company's information relates to subsea engineering 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceÇankaya, TürkiyeHQ checked Sep 18, 2026501-1,0001,501 contacts →

Partial evidence

“TP-OTC is established to provide all engineering and technology services for offshore operations in oil and gas industry.”

Source: RevenueBase Database · checked Sep 18, 2026
2Indirect evidencePendik, TürkiyeHQ checked Sep 18, 2026201-500184 contacts →

Indirect evidence

“ARAS is one of the most outstanding private companies of Turkey on issues of salvage, towage, and marine construction.”

Source: RevenueBase Database · checked Sep 18, 2026
3Indirect evidenceİstanbul, TürkiyeHQ checked Sep 18, 202651-20019 contacts →

Indirect evidence

“Çalışanlarının 25 yılı aşkın deniz, sualtı ve telekomünikasyon endüstrileri tecrübelerini birleştiren GateMarine, 2006 yılında sualtı teknolojileri üzerine özel tasarım üretimleri…”

Source: RevenueBase Database · checked Sep 18, 2026
4Partial evidenceIstanbul, TürkiyeHQ checked Sep 18, 20261-1010 contacts →

Partial evidence

“ARTI Engineering is an independent marine consultancy and design company established in 2001 in Tuzla, Istanbul where the heart of the Turkish shipbuilding industry beats.”

Source: RevenueBase Database · checked Sep 18, 2026
5Partial evidenceKartal, TürkiyeHQ checked Sep 18, 202611-509 contacts →

Partial evidence

“Our company has always targetted providing quality engineering services by following the latest technology with its knowledge and experience on Marine Structures for more than 30…”

Source: RevenueBase Database · checked Sep 18, 2026
6Indirect evidenceTrabzon, TürkiyeHQ checked Sep 18, 20261-109 contacts →

Indirect evidence

“Degz is an underwater robotics company innovating components and vehicles.”

Source: RevenueBase Database · checked Sep 18, 2026
7Partial evidenceIstanbul, TürkiyeHQ checked Sep 18, 202611-507 contacts →

Partial evidence

“Offshore C/W Pipeline Construction Subsea Oil & Gas Pipelines Scaffolding Construction Dredging Services Ship Hull Survey Services Pipeline Survey Services Salvage Wreck Removal…”

Source: RevenueBase Database · checked Sep 18, 2026
8Partial evidenceYenimahalle, TürkiyeHQ checked Sep 18, 20261-103 contacts →

Partial evidence

“Innovating Marine Frontiers At Marelux Technology Engineering, we stand at the forefront of advanced marine innovation.”

Source: RevenueBase Database · checked Sep 18, 2026
9Indirect evidenceCankaya, TürkiyeHQ checked Sep 18, 202611-503 contacts →

Indirect evidence

“Our journey of Research & Development has begun at 2004 and lead us to the Underwater Systems world at 2008.”

Source: RevenueBase Database · checked Sep 18, 2026
10Indirect evidencePendik, TürkiyeHQ checked Sep 18, 202611-502 contacts →

Indirect evidence

“Visit us at”

Source: RevenueBase Database · checked Sep 18, 2026

Showing 10 of 49 subsea engineering companies based in Türkiye

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Subsea engineering companies based in Türkiye at a glance

As of Sep 18, 2026
14.3%Verified-email coverage
40.8Average contacts per company
11-50Median size (employees)
38.8%Largest-city concentration · Istanbul
Sep 18, 2026Page data refreshed

Companies by employee count

1-10
20
11-50
19
51-200
6
201-500
3
501-1,000
1

Email recency for this list is measured worldwide rather than for Türkiye, so it is reported there. Company counts and contact totals on this page are exact for Türkiye, over 49 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 engineering 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 Türkiye whose own description of what they do matches “subsea engineering 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 engineering 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 engineering companies, and records with no verified work email. Companies headquartered outside Türkiye 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, 286 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.

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 engineering 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 engineering companies are there based in Türkiye?

RevenueBase identified 49 subsea engineering companies headquartered in Türkiye 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?

Tp-Otc, headquartered in Cankaya, tops this list with the largest team on record.

Which city has the most subsea engineering companies?

Istanbul leads with 19 headquartered companies, followed by Cankaya (2) and Izmir (2).

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 286 verified decision-maker contacts tracked across these 49 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.