Company lists · Data refreshed September 2026

Top 25 Marine and subsea consulting firms based in Saudi Arabia

Name: Marine and subsea consulting firms based in Saudi Arabia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 160 companies tracked

RevenueBase identified 160 marine and subsea consulting firms headquartered in Saudi Arabia as of September 2026 and tracks 12,426 professional contacts across them, including 2,210 with verified work emails. Riyadh is the largest hub.

This list covers marine and subsea consulting firms headquartered in Saudi Arabia, 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 28, 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 28, 2026 86% judged on-target in blind review

160Companies

12,426Contacts tracked

2,210Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest marine and subsea consulting firms based in Saudi Arabia

Ranked by team size

Top 25 of 160 marine and subsea consulting firms based in Saudi Arabia, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to marine and 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	دار الرياض DAR AL Riyadh	Indirect evidence	Riyadh, Saudi ArabiaHQ checked Sep 28, 2026	1,001-5,000	2,720 contacts →
	Indirect evidence “Founded in the mid-1970s by Prince Turki bin Abdullah bin Abdulrahman Al Saud, a forward-thinking engineering pioneer, Dar Al Riyadh has evolved into the Kingdom's leading…” Source: RevenueBase Database · checked Sep 28, 2026
2	Zamil Offshore Services Company	Partial evidence	Al-khobar, Saudi ArabiaHQ checked Sep 28, 2026	1,001-5,000	2,312 contacts →
	Partial evidence “Zamil Offshore Services Company has been offering diversified offshore and marine support services to the oil and gas industry since 1977.” Source: RevenueBase Database · checked Sep 28, 2026
3	Zuhair Fayez	Partial evidence	Riyadh, Saudi ArabiaHQ checked Sep 28, 2026	1,001-5,000	1,113 contacts →
	Partial evidence “Zuhair Fayez stands as the region's foremost engineering and consulting firm, renowned for our innovative approach in architecture, project management, and oil and gas services.” Source: RevenueBase Database · checked Sep 28, 2026
4	Jana Marine Service Company LLC	Partial evidence	Khobar, Saudi ArabiaHQ checked Sep 28, 2026	501-1,000	916 contacts →
	Partial evidence “Provides first-class marine offshore Services to the Oil & Gas sector in the Arabian Gulf region and beyond.” Source: RevenueBase Database · checked Sep 28, 2026
5	Kbr-Amcde	Indirect evidence	Al-khobar, Saudi ArabiaHQ checked Sep 28, 2026	501-1,000	784 contacts →
	Indirect evidence “KBR-AMCDE has been successfully delivering engineering solutions in the Kingdom since 2011.” Source: RevenueBase Database · checked Sep 28, 2026
6	Solution Leaders Fayez Engineering	Indirect evidence	Khobar, Saudi ArabiaHQ checked Sep 28, 2026	501-1,000	574 contacts →
	Indirect evidence “SLFE offers Engineering Services specialized in the Oil & Gas and Infrastructure industries.” Source: RevenueBase Database · checked Sep 28, 2026
7	Mermaid Subsea Services CO LTD Saudi Arabia	Partial evidence	Dammam, Saudi ArabiaHQ checked Sep 28, 2026	501-1,000	404 contacts →
	Partial evidence “This page is dedicated to Mermaid Subsea Saudi Arabia.” Source: RevenueBase Database · checked Sep 28, 2026
8	Fugro Suhaimi Company LTD	Indirect evidence	Dammam, Saudi ArabiaHQ checked Sep 28, 2026	501-1,000	359 contacts →
	Indirect evidence “We are the world’s leading Geo-data specialist, collecting and analysing comprehensive information about the Earth and the structures built upon it.” Source: RevenueBase Database · checked Sep 28, 2026
9	Hadi H AL Hammam EST	Partial evidence	Rahima, Saudi ArabiaHQ checked Sep 28, 2026	5,001-10,000	311 contacts →
	Partial evidence “Hadi H Al Hammam Est.( Marine Division ) is one of the leading providers of marine / offshore support services to the Oil & Gas Industry in Saudi Arabia and Middle East.” Source: RevenueBase Database · checked Sep 28, 2026
10	Saudi Engineering Group International	Indirect evidence	Dammam, Saudi ArabiaHQ checked Sep 28, 2026	501-1,000	303 contacts →
	Indirect evidence “Saudi Engineering Group International (SEGI) a multidisciplinary engineering and PMC service provider based in Dammam, Eastern Region with existing support offices in Southern…” Source: RevenueBase Database · checked Sep 28, 2026
11	Ahmed Al-Mousa Engineering	Indirect evidence	Al Khobar, Saudi ArabiaHQ checked Sep 28, 2026	501-1,000	198 contacts →
	Indirect evidence “Ahmed AlMousa Engineering is a distinguished engineering house of expertise specializing in supervision services, built upon the highest standards of efficiency and quality.” Source: RevenueBase Database · checked Sep 28, 2026
12	Marine Services Company LTD	Partial evidence	Jeddah, Saudi ArabiaHQ checked Sep 28, 2026	501-1,000	183 contacts →
	Partial evidence “Marine Services Co, Ltd.” Source: RevenueBase Database · checked Sep 28, 2026
13	Tesco Engineering	Indirect evidence	Jubail Industrial City, Saudi ArabiaHQ checked Sep 28, 2026	51-200	109 contacts →
	Indirect evidence “TESCO ENGINEERING: Your Strategic Partner for Innovative, Reliable, and High-Quality Industrial Solutions TESCO Engineering is a premier Saudi Arabian Engineering Powerhouse…” Source: RevenueBase Database · checked Sep 28, 2026
14	AMCDE	Partial evidence	Al Khobar, Saudi ArabiaHQ checked Sep 28, 2026	201-500	95 contacts →
	Partial evidence “AMCDE is a Saudi Arabian Company, established by the merger of Consulting and Design Engineering (CDE) and Abdulla Al-Moaibed Engineering (AME) providing a wide range of…” Source: RevenueBase Database · checked Sep 28, 2026
15	Richmond Consulting Services RCS	Indirect evidence	Riyadh, Saudi ArabiaHQ checked Sep 28, 2026	51-200	89 contacts →
	Indirect evidence “A group of engineering companies consolidated in the intention to provide superior level of multi-disciplinary consultancy services that delivers a comprehensive array of…” Source: RevenueBase Database · checked Sep 28, 2026
16	Sasec Engineering Company	Indirect evidence	Khobar, Saudi ArabiaHQ checked Sep 28, 2026	51-200	88 contacts →
	Indirect evidence “SAHAM AL-SHAMAL ENGINEERING CONSULTANTS,(SASEC) which caters to design engineering projects in the Oil & Gas fields as well as industrial, water, power, energy and infrastructure…” Source: RevenueBase Database · checked Sep 28, 2026
17	Fichtner Consulting Engineers LLC Saudi Arabia	Indirect evidence	Alkhobar, Saudi ArabiaHQ checked Sep 28, 2026	201-500	85 contacts →
	Indirect evidence “The Fichtner Group is one of the leading independent engineering consultancy firms in the world.” Source: RevenueBase Database · checked Sep 28, 2026
18	Sabbagh Engineering Consultants & Associates	Indirect evidence	Jeddah, Saudi ArabiaHQ checked Sep 28, 2026	51-200	82 contacts →
	Indirect evidence “Sabbagh Engineering Consultants & Associates (SECA) is a Saudi multidisciplinary consultancy based in Jeddah, and operating through out the Kingdome vast regions.” Source: RevenueBase Database · checked Sep 28, 2026
19	Bureau Égyptien DE Conseils Techniques Bect	Indirect evidence	Al Maseef District, Saudi ArabiaHQ checked Sep 28, 2026	201-500	80 contacts →
	Indirect evidence “BECT is a House of Expertise, established in Egypt since 1989, ventured in KSA in 2006 as a limited liability partnership, founded by two partners, Prof.” Source: RevenueBase Database · checked Sep 28, 2026
20	Mohammed Omar Jazzar Consulting Engineers Company	Partial evidence	Riyadh, Saudi ArabiaHQ checked Sep 28, 2026	11-50	72 contacts →
	Partial evidence “Omar Al Jazzar Consulting Engineers is a civil engineering company based out of Omar Jazzar Consulting Engineers Building, Riyadh, Riyadh, Saudi Arabia.” Source: RevenueBase Database · checked Sep 28, 2026
21	Gulf Power Marine Company	Partial evidence	Al Khobar, Saudi ArabiaHQ checked Sep 28, 2026	51-200	68 contacts →
	Partial evidence “Gulf Power Marine has been continuously growing since its establishment in 1997, providing marine equipment and services in the Kingdom of Saudi Arabia (with headquarters in Al…” Source: RevenueBase Database · checked Sep 28, 2026
22	Gulf Consult	Indirect evidence	Al Khobar, Saudi ArabiaHQ checked Sep 28, 2026	201-500	63 contacts →
	Indirect evidence “Gulf Consult was established in KSA – Khobar in the year 1981 as is an independent multidisciplinary consultancy organization to provide range of engineering, testing and…” Source: RevenueBase Database · checked Sep 28, 2026
23	Technical Development Solutions	Indirect evidence	Riyadh, Saudi ArabiaHQ checked Sep 28, 2026	501-1,000	58 contacts →
	Indirect evidence “We are one of the companies within Al Mousa Group, a Saudi Arabian conglomerate with over 50 years of experience in the Saudi market.” Source: RevenueBase Database · checked Sep 28, 2026
24	Calex Group	Partial evidence	Jubail, Saudi ArabiaHQ checked Sep 28, 2026	51-200	56 contacts →
	Partial evidence “Since our humble establishment in Cochin, India in 2008, CALEX has aspired to offer the best solution to the Marine, Offshore and Industrial when it comes to meet high quality…” Source: RevenueBase Database · checked Sep 28, 2026
25	AL Najm AL Thaqib Co. For Marine Services	Indirect evidence	Jubail, Saudi ArabiaHQ checked Sep 28, 2026	51-200	52 contacts →
	Indirect evidence “AL NAJM AL THAQIB Co.” Source: RevenueBase Database · checked Sep 28, 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: marine and subsea consulting firms. 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 marine and subsea consulting firms.
Partial evidence: Its own public description names part of marine and subsea consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name marine and subsea consulting firms. 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 160 marine and subsea consulting firms based in Saudi Arabia

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 2,210 reachable decision-makers.

Free signup · no credit card

View the full list →

Marine and subsea consulting firms based in Saudi Arabia at a glance

As of Sep 28, 2026

17.8%Verified-email coverage

77.7Average contacts per company

11-50Median size (employees)

20.6%Largest-city concentration · Riyadh

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for Saudi Arabia, so it is reported there. Company counts and contact totals on this page are exact for Saudi Arabia, over 160 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 marine and 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 Saudi Arabia whose own description of what they do matches “marine and 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 marine and 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 marine and subsea consulting firms, and records with no verified work email. Companies headquartered outside Saudi Arabia 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, 2,210 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 28, 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 marine and 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 marine and subsea consulting firms are there based in Saudi Arabia?

RevenueBase identified 160 marine and subsea consulting firms headquartered in Saudi Arabia 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?

دار الرياض DAR AL Riyadh, headquartered in Riyadh, tops this list with the largest team on record.

Which city has the most marine and subsea consulting firms?

Riyadh leads with 33 headquartered companies, followed by Al Khobar (16) and Dammam (16).

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 2,210 verified decision-maker contacts tracked across these 160 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 28, 2026.

Ready to reach these companies? Verified emails and direct dials for all 160 marine and subsea consulting firms based in Saudi Arabia. Start with a free account, no credit card.

Download this list →

Related lists

Marine and subsea consulting firms by geography

Browse the directory

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.