Company lists · Data refreshed September 2026

Top 25 Subsea engineering companies based in Nigeria

Name: Subsea engineering companies based in Nigeria
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 18, 2026 185 companies tracked

RevenueBase identified 185 subsea engineering companies headquartered in Nigeria as of September 2026 and tracks 4,195 professional contacts across them, including 609 with verified work emails. Port Harcourt is the largest hub.

This list covers subsea engineering companies headquartered in Nigeria, 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

185Companies

4,195Contacts tracked

609Verified emails

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The 25 largest subsea engineering companies based in Nigeria

Ranked by team size

Top 25 of 185 subsea engineering companies based in Nigeria, 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Nestoil Limited	Partial evidence	Victoria Island, NigeriaHQ checked Sep 18, 2026	1,001-5,000	700 contacts →
	Partial evidence “Nestoil is Nigeria’s largest indigenous Engineering, Procurement, Construction and Commissioning (EPCC) Company in the Oil and Gas sector and has been a significant contributor to…” Source: RevenueBase Database · checked Sep 18, 2026
2	Hydrodive Group	Indirect evidence	Lagos, NigeriaHQ checked Sep 18, 2026	201-500	409 contacts →
	Indirect evidence “HydroDive provides a broad range of Marine Vessels, Air, Mixed Gas and Saturation Diving, ROV, AUV and Survey Services primarily to the offshore & inshore Petroleum Industry of…” Source: RevenueBase Database · checked Sep 18, 2026
3	Marine Platforms Limited	Indirect evidence	Victoria Island, NigeriaHQ checked Sep 18, 2026	201-500	377 contacts →
	Indirect evidence “Marine Platforms is an oil service company focused on providing diverse services to the upstream sector of the oil & gas industry in Nigeria and the African continent sustainably.” Source: RevenueBase Database · checked Sep 18, 2026
4	Ariosh	Strong evidence	Lagos, NigeriaHQ checked Sep 18, 2026	201-500	243 contacts →
	Strong evidence “Ariosh delivers engineering and construction services in the onshore, offshore and subsea segment of the oil and gas sector in Nigeria, West Africa.” Source: RevenueBase Database · checked Sep 18, 2026
5	Laser Engineering And Resources Consultants Limited	Strong evidence	Port-harcourt, NigeriaHQ checked Sep 18, 2026	51-200	140 contacts →
	Strong evidence “Laser Engineering is a Petroleum Engineering Consultancy outfit specializing in surface and subsurface studies including well test services.” Source: RevenueBase Database · checked Sep 18, 2026
6	Kohasa Engineering Company Limited	Partial evidence	Port Harcourt, NigeriaHQ checked Sep 18, 2026	11-50	139 contacts →
	Partial evidence “Kohasa Engineering Company Limited is an oil and energy company based out of Plot 474, Trans Amadi industrial layout, Port Harcourt, RIVERS, Nigeria.” Source: RevenueBase Database · checked Sep 18, 2026
7	Rosetti Pivot LTD	Partial evidence	Lagos, NigeriaHQ checked Sep 18, 2026	51-200	84 contacts →
	Partial evidence “Rosetti Pivot Limited provides an array of engineering, procurement, and construction services to the oil & gas sectors within Nigeria and the Sub-Saharan Africa region, using…” Source: RevenueBase Database · checked Sep 18, 2026
8	Aviam Offshore Engineering Company Limited	Partial evidence	Lagos, NigeriaHQ checked Sep 18, 2026	201-500	73 contacts →
	Partial evidence “AOECL provides Drilling & Well completion, Manpower, Procurement, Dredging, Inspection, and EPCI services (Engineering, Procurement, Technical Consultancy, Facility Maintenance…” Source: RevenueBase Database · checked Sep 18, 2026
9	Peso Energy Services	Partial evidence	Lekki Phase 1, NigeriaHQ checked Sep 18, 2026	201-500	72 contacts →
	Partial evidence “PESO Energy Services is a leader in the Oil and Gas services industry, specializing in Engineering Services, Early Production Facility Packages, Oil Field Services, Specialized…” Source: RevenueBase Database · checked Sep 18, 2026
10	Deltatek Offshore Limited	Partial evidence	Lagos, NigeriaHQ checked Sep 18, 2026	201-500	48 contacts →
	Partial evidence “DeltaTek Offshore Ltd is a leading Engineering, Procurement, Installation, Construction, and Commissioning (EPICC) service provider in the oil and gas sector of Sub-Sahara Africa.” Source: RevenueBase Database · checked Sep 18, 2026
11	Nigerstar7 Limited	Partial evidence	Lagos, NigeriaHQ checked Sep 18, 2026	51-200	48 contacts →
	Partial evidence “With headquarters in Lagos, Nigeria, NigerStar7 is a company wholly owned by Subsea7.” Source: RevenueBase Database · checked Sep 18, 2026
12	Melcurt Limited	Indirect evidence	Osubi-warri, NigeriaHQ checked Sep 18, 2026	201-500	45 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 18, 2026
13	Dovewell Oilfield Services Limited	Indirect evidence	Port Harcourt, NigeriaHQ checked Sep 18, 2026	11-50	38 contacts →
	Indirect evidence “Dovewell Oilfield Services Limited is a fully Nigerian owned oil and gas service company.” Source: RevenueBase Database · checked Sep 18, 2026
14	Gremoore Limited	Partial evidence	Lekki Phase 1, NigeriaHQ checked Sep 18, 2026	501-1,000	35 contacts →
	Partial evidence “Gremoore, established in 2013, is a 100% Nigerian company and a leading indigenous provider of offshore engineering, procurement, fabrication, installation associated with…” Source: RevenueBase Database · checked Sep 18, 2026
15	Houston Engineering And Marine Services Limited	Partial evidence	Port-harcourt, NigeriaHQ checked Sep 18, 2026	201-500	32 contacts →
	Partial evidence “Houston Engineering and Marine Services Limited is missioned to deliver quality and innovative services to our stakeholders through exceptional professionalism, healthy, and safe…” Source: RevenueBase Database · checked Sep 18, 2026
16	Subsea100 Global	Partial evidence	Port Harcourt, NigeriaHQ checked Sep 18, 2026	11-50	30 contacts →
	Partial evidence “Overview Subsea100 Global(SHG), established in 2011, is a leading independent Offshore Services Contractor providing a range of Geophysical, Geotechnical and Subsea related…” Source: RevenueBase Database · checked Sep 18, 2026
17	Deepwater Engineering Limited DEL	Partial evidence	Warri, NigeriaHQ checked Sep 18, 2026	11-50	29 contacts →
	Partial evidence “Deepwater Engineering Limited (DEL) is a multi-discipline service provider formed by experienced professionals with years of direct experience within the major offshore Oil and…” Source: RevenueBase Database · checked Sep 18, 2026
18	Union Energy Services LTD	Partial evidence	Port Harcourt, NigeriaHQ checked Sep 18, 2026	11-50	22 contacts →
	Partial evidence “Union Energy Services Limited is a well established and wholly owned Nigerian company providing Energy and Engineering Services.” Source: RevenueBase Database · checked Sep 18, 2026
19	XPO Marine Services Limited	Indirect evidence	Victoria Island, NigeriaHQ checked Sep 18, 2026	11-50	18 contacts →
	Indirect evidence “XPO Marine Services is an integrated provider of offshore marine support services to the oil and gas industry in West Africa.” Source: RevenueBase Database · checked Sep 18, 2026
20	Dovaheights Energy Limited	Indirect evidence	Lekki, NigeriaHQ checked Sep 18, 2026	11-50	18 contacts →
	Indirect evidence “Dovaheights Energy is an innovative and Technological driven independent company that uses Robotics to provide solutions Offshores.” Source: RevenueBase Database · checked Sep 18, 2026
21	Seflam SGL	Indirect evidence	Victoria Island, NigeriaHQ checked Sep 18, 2026	201-500	16 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 18, 2026
22	Deep Water Consultancy & Engineering Services LTD	Strong evidence	Lekki, NigeriaHQ checked Sep 18, 2026	11-50	15 contacts →
	Strong evidence “DeepWater Consultancy & Engineering Services Limited is an Independent Oil and Gas Subsea technology, Pipeline management and Field development engineering consultancy company…” Source: RevenueBase Database · checked Sep 18, 2026
23	Atlantic Marine & Oilfield Services LTD	Strong evidence	Ikoyi, NigeriaHQ checked Sep 18, 2026	51-200	15 contacts →
	Strong evidence “Atlantic Marine & Oilfield Services has been operating as a distinguished Subsea Engineering and Diving Company since maintaining an ISO 9001-2015 certification.” Source: RevenueBase Database · checked Sep 18, 2026
24	Erdis Nigeria Limited	Partial evidence	Lagos, NigeriaHQ checked Sep 18, 2026	51-200	14 contacts →
	Partial evidence “We are an indigenous company that provides quality services of engineering, procurement, construction and installation support in Nigeria Oil and Gas Companies.” Source: RevenueBase Database · checked Sep 18, 2026
25	Omiti Engineering Nigeria Limited	Partial evidence	Ibeju Lekki, NigeriaHQ checked Sep 18, 2026	11-50	14 contacts →
	Partial evidence “Omiti Engineering Nigeria Limited (OENL) is key player in Engineering, Procurement, Construction and Installation (EPCI), providing services to the Oil, Gas, Power and other…” Source: RevenueBase Database · checked Sep 18, 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: subsea engineering 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 subsea engineering companies.
Partial evidence: Its own public description names part of subsea engineering companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name subsea engineering 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 25 of 185 subsea engineering companies based in Nigeria

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Subsea engineering companies based in Nigeria at a glance

As of Sep 18, 2026

14.5%Verified-email coverage

22.7Average contacts per company

11-50Median size (employees)

27.0%Largest-city concentration · Port Harcourt

Sep 18, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured worldwide rather than for Nigeria, so it is reported there. Company counts and contact totals on this page are exact for Nigeria, over 185 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 Nigeria 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 Nigeria 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, 609 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.

Subsea engineering companies by metro

Subsea engineering companies in Port Harcourt50
Subsea engineering companies in Lagos36

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 Nigeria?

RevenueBase identified 185 subsea engineering companies headquartered in Nigeria 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?

Nestoil Limited, headquartered in Victoria Island Lagos, tops this list with the largest team on record.

Which city has the most subsea engineering companies?

Port Harcourt leads with 50 headquartered companies, followed by Lagos (36) and Lagos State (13).

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 609 verified decision-maker contacts tracked across these 185 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.