Company lists · Data refreshed September 2026

Top 25 Offshore structural engineering firms based in Türkiye

Name: Offshore structural engineering firms based in Türkiye
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 286 companies tracked

RevenueBase identified 286 company matches for offshore structural engineering firms associated with Türkiye as of September 2026 and tracks 3,742 professional contacts across them, including 534 with verified work emails. Istanbul is the largest hub.

This list covers company matches for offshore structural engineering firms associated with Türkiye, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 17, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 17, 2026 How this list was built

286Companies

3,742Contacts tracked

534Verified emails

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The 25 largest offshore structural engineering firms based in Türkiye

Ranked by team size

Top 25 of 286 company matches for offshore structural engineering firms based in Türkiye, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 17, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Tp-Otc	Exact match	Çankaya, TürkiyeHQ recorded Sep 17, 2026	501-1,000	1,501 contacts →
	Exact match “TP-OTC is established to provide all engineering and technology services for offshore operations in oil and gas industry.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
2	Prota Engineering	Exact match	Ankara, TürkiyeHQ recorded Sep 17, 2026	201-500	164 contacts →
	Exact match “Founded in 1985, Prota Engineering is a pioneering design firm with a global footprint, having executed over projects spanning across 25 countries, having offices in Turkey…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
3	İksa Mühendislik	Exact match	Ankara, TürkiyeHQ recorded Sep 17, 2026	501-1,000	118 contacts →
	Exact match “IKSA Engineering Consultancy Construction Industry and Trade Inc; with its expert technical staff, numerous technological machinery and successfully concluded domestic and foreign…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
4	Stadia Engineering	Exact match	Çankaya, TürkiyeHQ recorded Sep 17, 2026	51-200	77 contacts →
	Exact match “Stadia Engineering and Consultancy was established in 2018.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
5	BE	Exact match	Ankara, TürkiyeHQ recorded Sep 17, 2026	51-200	64 contacts →
	Exact match “be is dedicated to providing sustainable engineering solutions and consultancy services in the fields of Renewables, Oil & Gas.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
6	MOD Endüstriyel Servisler	Exact match	İstanbul, TürkiyeHQ recorded Sep 17, 2026	201-500	58 contacts →
	Exact match “Mod Endüstriyel Servisler, 2013 yılından bu yana enerji, petrokimya, rafineri, çimento, madencilik, tersane ve endüstriyel üretim tesislerine entegre servis çözümleri sunmaktadır.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
7	EFK Engineering	Exact match	Çankaya, TürkiyeHQ recorded Sep 17, 2026	51-200	44 contacts →
	Exact match “EFK Engineering is an engineering and design company established in 2004 in Ankara, Turkey.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8	Kuasar Marin Engineering INC	Exact match	İstanbul, TürkiyeHQ recorded Sep 17, 2026	51-200	42 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
9	Perform Mühendi̇sli̇k	Exact match	İstanbul, TürkiyeHQ recorded Sep 17, 2026	51-200	36 contacts →
	Exact match “HİZMET ALANLARIMIZ YÜKSEK YAPILAR ENDÜSTRİ VE ENERJİ TESİSLERİ TOPLU KONUTLAR HASTANELER TURİSTİK TESİSLER ve AVM'ler DEPREM GÜVENLİK ANALİZLERİ KENTSEL DÖNÜŞÜM PROJELERİ DİĞER…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
10	Advens Engineering	Exact match	Istanbul, TürkiyeHQ recorded Sep 17, 2026	11-50	27 contacts →
	Exact match “Advens Mühendislik A.Ş, Türkiye’nin önemli teknoloji üslerinden biri olan Teknopark İstanbul’da, tesis güvenlik sertifikalı ofisinde tüm çalışmalarını büyük bir gizlilik ve…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
11	HSB Marine Construction	Exact match	Istanbul, TürkiyeHQ recorded Sep 17, 2026	51-200	24 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
12	Erdemli Proje VE Müşavirlik	Exact match	Akaretler, TürkiyeHQ recorded Sep 17, 2026	11-50	24 contacts →
	Exact match “Erdemli Engineering and Consulting has a vivid experience of 50 years in the field of civil-structural design and is one of the pioneering Consulting – Engineering companies of…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
13	Çalık Proje Mühendislik A.Ş	Exact match	İstanbul, TürkiyeHQ recorded Sep 17, 2026	51-200	22 contacts →
	Exact match “Çalık Proje Mühendislik; Enerji, Petrol, Gaz ve Endüstri piyasalarında yer alan çeşitli firmalar – yükleniciler, işverenler ve finans kuruluşlarına 22 yıldır hizmet veren bir…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
14	MOD Offshore	Exact match	Çaycuma, TürkiyeHQ recorded Sep 17, 2026	51-200	20 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
15	Probe Engineering Architecture & Consultancy	Exact match	Çankaya, TürkiyeHQ recorded Sep 17, 2026	11-50	20 contacts →
	Exact match “Kurulduğu 2008 yılından bugüne, kamu ve özel sektörden müşterilerine özellikle endüstriyel tesis ve prefabrik yapı projelendirme konusunda kapsamlı mühendislik hizmetleri veren…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
16	Gatemarine	Exact match	İstanbul, TürkiyeHQ recorded Sep 17, 2026	51-200	19 contacts →
	Exact match “Çalışanlarının 25 yılı aşkın deniz, sualtı ve telekomünikasyon endüstrileri tecrübelerini birleştiren GateMarine, 2006 yılında sualtı teknolojileri üzerine özel tasarım üretimleri…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17	Büro Statik Mühendislik İnşaat San. VE Tic. Ltd. ŞTI	Exact match	Beşiktaş, TürkiyeHQ recorded Sep 17, 2026	11-50	18 contacts →
	Exact match “Büro Statik Mühendislik İnşaat San.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
18	Modern Mühendislik	Exact match	İstanbul, TürkiyeHQ recorded Sep 17, 2026	11-50	17 contacts →
	Exact match “Modern Muhendislik was established in 2005 by Galip Topönder, who has 25 years of experience in Civil & Structural Engineering.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
19	PROBI	Exact match	Besiktas, TürkiyeHQ recorded Sep 17, 2026	11-50	16 contacts →
	Exact match “Probi is a structural engineering and design consultancy based in İstanbul, founded in 1984 by Fikret Berker.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20	Derya Group İnşaat VE Tersanecilik A.Ş	Exact match	Tuzla, TürkiyeHQ recorded Sep 17, 2026	201-500	16 contacts →
	Exact match “Derya Group was founded in 1992 in Istanbul, Turkey.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21	Endeco Engineering Design Consultancy	Exact match	Ankara, TürkiyeHQ recorded Sep 17, 2026	11-50	16 contacts →
	Exact match “ENDECO is an engineering, design and consultancy company which was established in 2003.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
22	Ural Engineering	Exact match	Ankara, TürkiyeHQ recorded Sep 17, 2026	51-200	15 contacts →
	Exact match “URAL Engineering Co.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23	Hibrit Mühendislik	Exact match	İzmir, TürkiyeHQ recorded Sep 17, 2026	11-50	15 contacts →
	Exact match “Kurulduğumuz 2004 yılından bu yana ağırlıklı olarak sanayi yapılarına yönelik mühendislik, projelendirme ve danışmanlık hizmetleri konusunda faaliyet sürdürüyoruz.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24	OTS Proje Müşavirlik İnşaat	Exact match	Kadıkoy - Istanbul, TürkiyeHQ recorded Sep 17, 2026	11-50	14 contacts →
	Exact match “The company was first established in 1965 under the name of “Vehbi Ozden Project & Design”, mostly working in the area of reinforced concrete structural design, construction of…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
25	LBA Design And Consultancy	Exact match	Ümraniye, TürkiyeHQ recorded Sep 17, 2026	11-50	14 contacts →
	Exact match “LBA has been established in 2015 in order to give Engineering and Consultancy services.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “offshore structural engineering firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 286 offshore structural engineering firms based in Türkiye

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Offshore structural engineering firms based in Türkiye at a glance

As of Sep 17, 2026

14.3%Verified-email coverage

13.1Average contacts per company

1-10Median size (employees)

27.6%Largest-city concentration · Istanbul

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

156

11-50

51-200

201-500

501-1,000

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 286 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with Türkiye whose business descriptions match “offshore structural engineering firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 534 professional contacts with verified work emails across the full matched dataset. 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 17, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “offshore structural engineering firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many offshore structural engineering firms are there based in Türkiye?

RevenueBase identified 286 company matches for offshore structural engineering firms associated with Türkiye as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Tp-Otc tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most offshore structural engineering firms?

Istanbul leads with 79 company records, followed by Ankara (31) and Cankaya (17).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 534 professional contacts with verified work emails tracked across these 286 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 17, 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 SmartSearch, 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.