Company lists · Data refreshed September 2026

Top 20 Subsea consulting firms based in Türkiye

RevenueBase identified 94 subsea consulting firms headquartered in Türkiye as of September 2026 and tracks 2,360 professional contacts across them, including 360 with verified work emails. Istanbul is the largest hub.

This list covers subsea consulting firms 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 29, 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 29, 2026 86% judged on-target in blind review
94Companies
2,360Contacts tracked
360Verified emails
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The 20 largest subsea consulting firms based in Türkiye

Ranked by team size
Top 20 of 94 subsea consulting firms based in Türkiye, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to subsea consulting firms: 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
1Indirect evidenceÇankaya, TürkiyeHQ checked Sep 29, 2026501-1,0001,501 contacts →

Indirect 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 29, 2026
2Indirect evidenceIstanbul, TürkiyeHQ checked Sep 29, 2026201-500155 contacts →

Indirect evidence

“EXACONS Project and Contracting Inc; was founded in 2014, Istanbul based on the vision to become a Solution Partner in every phase of the industrial facility life cycle for local…”

Source: RevenueBase Database · checked Sep 29, 2026
3Indirect evidenceBornova, TürkiyeHQ checked Sep 29, 202611-5055 contacts →

Indirect evidence

“At A Glance;* Oil & Gas Engineering Company,* Managed by Practicing Refinery Engineers,* Engineering Expertise that Minimizes Cost & Improves Process,* Over 100 Total Project…”

Source: RevenueBase Database · checked Sep 29, 2026
4Indirect evidenceIstanbul, TürkiyeHQ checked Sep 29, 202611-5027 contacts →

Indirect evidence

“Advens Mühendislik A.Ş, Türkiye’nin önemli teknoloji üslerinden biri olan Teknopark İstanbul’da, tesis güvenlik sertifikalı ofisinde tüm çalışmalarını büyük bir gizlilik ve…”

Source: RevenueBase Database · checked Sep 29, 2026
5Indirect evidenceİstanbul, TürkiyeHQ checked Sep 29, 202651-20022 contacts →

Indirect evidence

“Çalık Proje Mühendislik; Enerji, Petrol, Gaz ve Endüstri piyasalarında yer alan çeşitli firmalar – yükleniciler, işverenler ve finans kuruluşlarına 22 yıldır hizmet veren bir…”

Source: RevenueBase Database · checked Sep 29, 2026
6Indirect evidenceÇaycuma, TürkiyeHQ checked Sep 29, 202651-20020 contacts →

Indirect evidence

“At Mod Offshore, we provide reliable and effective services in the offshore sector in partnership with "Oil States Industries." With our experienced team and industry-leading…”

Source: RevenueBase Database · checked Sep 29, 2026
7Indirect evidenceİstanbul, TürkiyeHQ checked Sep 29, 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 29, 2026
8Indirect evidenceAnkara, TürkiyeHQ checked Sep 29, 202651-20017 contacts →

Indirect evidence

“ZETAS YAPI is an engineering company that gives technical support to construction, industry, oil & gas projects with offices in Ankara, Baku, Tbilisi and Warsaw.”

Source: RevenueBase Database · checked Sep 29, 2026
9Indirect evidenceSanayi, TürkiyeHQ checked Sep 29, 202611-5011 contacts →

Indirect evidence

“Matesis is a full-service naval architecture and marine engineering firm serving clients worldwide.”

Source: RevenueBase Database · checked Sep 29, 2026
10Indirect evidenceIstanbul, TürkiyeHQ checked Sep 29, 20261-1010 contacts →

Indirect 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 29, 2026
11Indirect evidenceKartal, TürkiyeHQ checked Sep 29, 202611-509 contacts →

Indirect 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 29, 2026
12Partial evidenceIstanbul, TürkiyeHQ checked Sep 29, 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 29, 2026
13Partial evidenceİstanbul, TürkiyeHQ checked Sep 29, 202611-505 contacts →

Partial evidence

“Argemon provides professional surveying and consulting services to a wide range of clients in numerous industries around the world.”

Source: RevenueBase Database · checked Sep 29, 2026
14Indirect evidenceİstanbul, TürkiyeHQ checked Sep 29, 20261-104 contacts →

Indirect evidence

“WHO WE ARE?”

Source: RevenueBase Database · checked Sep 29, 2026
15Indirect evidenceAydın, TürkiyeHQ checked Sep 29, 20261-103 contacts →

Indirect evidence

“Enigma Engineering Solutions is an independent consultancy company which was found in 2023 in Turkey for the oil, gas & geothermal exploration & production industry.”

Source: RevenueBase Database · checked Sep 29, 2026
16Indirect evidenceIstanbul, TürkiyeHQ checked Sep 29, 20261-103 contacts →

Indirect evidence

“Our signature is your solution!”

Source: RevenueBase Database · checked Sep 29, 2026
17Indirect evidenceMerkez, TürkiyeHQ checked Sep 29, 20261-103 contacts →

Indirect evidence

“Founding Purpose PETRA Project & Design targets to National and International Markets, with regards to utilizing underground resources and awareness of industrial requirements…”

Source: RevenueBase Database · checked Sep 29, 2026
18Partial evidenceAnkara, TürkiyeHQ checked Sep 29, 202651-2002 contacts →

Partial evidence

“IIGS is an engineering and consulting company serving mainly in nuclear, pipeline and railway industries during initiating, planning, executing, monitoring and closing phases of…”

Source: RevenueBase Database · checked Sep 29, 2026
19Indirect evidencePendik, TürkiyeHQ checked Sep 29, 202611-502 contacts →

Indirect evidence

“Visit us at”

Source: RevenueBase Database · checked Sep 29, 2026
20Indirect evidenceAtaşehir, TürkiyeHQ checked Sep 29, 20261-101 contacts →

Indirect evidence

“Piri Marine is based in Istanbul, specializes in a wide range of marine and technical consultancy services for clients worldwide.”

Source: RevenueBase Database · checked Sep 29, 2026

Showing 20 of 94 subsea consulting firms based in Türkiye

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Subsea consulting firms based in Türkiye at a glance

As of Sep 29, 2026
15.3%Verified-email coverage
25.1Average contacts per company
11-50Median size (employees)
45.7%Largest-city concentration · Istanbul
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
45
11-50
34
51-200
11
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 94 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 consulting firms, 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 consulting firms”. 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 consulting firms), 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 consulting firms, 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, 360 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 29, 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 consulting firms, 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 consulting firms are there based in Türkiye?

RevenueBase identified 94 subsea consulting firms 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 consulting firms?

Istanbul leads with 43 headquartered companies, followed by Ankara (7) and Izmir (3).

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 360 verified decision-maker contacts tracked across these 94 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 29, 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.