Company lists · Data refreshed September 2026

Top 25 Subsea intervention service providers based in Nigeria

Name: Subsea intervention service providers based in Nigeria
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 136 companies tracked

RevenueBase identified 136 subsea intervention service providers headquartered in Nigeria as of September 2026 and tracks 2,306 professional contacts across them, including 335 with verified work emails. Port Harcourt is the largest hub.

This list covers subsea intervention service providers 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 22, 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 22, 2026 86% judged on-target in blind review

136Companies

2,306Contacts tracked

335Verified emails

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The 25 largest subsea intervention service providers based in Nigeria

Ranked by team size

Top 25 of 136 subsea intervention service providers based in Nigeria, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to subsea intervention service providers: 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	Hydrodive Group	Indirect evidence	Lagos, NigeriaHQ checked Sep 22, 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 22, 2026
2	Marine Platforms Limited	Indirect evidence	Victoria Island, NigeriaHQ checked Sep 22, 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 22, 2026
3	Emval Nigeria Limited	Indirect evidence	Lekki, NigeriaHQ checked Sep 22, 2026	51-200	109 contacts →
	Indirect evidence “The Company Emval Nigeria Limited is a servicing company that provides onshore and offshore technical services to the Oil & Gas industry.” Source: RevenueBase Database · checked Sep 22, 2026
4	Aviam Offshore Engineering Company Limited	Indirect evidence	Lagos, NigeriaHQ checked Sep 22, 2026	201-500	73 contacts →
	Indirect evidence “AOECL provides Drilling & Well completion, Manpower, Procurement, Dredging, Inspection, and EPCI services (Engineering, Procurement, Technical Consultancy, Facility Maintenance…” Source: RevenueBase Database · checked Sep 22, 2026
5	Pegis Global Services Limited	Indirect evidence	Port Harcourt, NigeriaHQ checked Sep 22, 2026	11-50	57 contacts →
	Indirect evidence “PEGIS GLOBAL Services Limited (PGSL) is a fast growing indigenous company with operational base in Port Harcourt, focused on providing services in the Oil and gas Industry in the…” Source: RevenueBase Database · checked Sep 22, 2026
6	Sellafield Energy	Indirect evidence	Lekki, NigeriaHQ checked Sep 22, 2026	11-50	56 contacts →
	Indirect evidence “Sellafield Energy is a leading oil and gas support provider that has within a short time, emerged as a reference point in recruitment services and technical manpower support…” Source: RevenueBase Database · checked Sep 22, 2026
7	OIL Quest International Limited	Indirect evidence	Port Harcourt, NigeriaHQ checked Sep 22, 2026	201-500	50 contacts →
	Indirect evidence “Oil Quest International Limited (OQIL) is an indigenous Oil and Gas integrated technical support Service Company incorporated in Nigeria as a limited liability company on 11th…” Source: RevenueBase Database · checked Sep 22, 2026
8	Zamam Offshore Services Limited	Indirect evidence	Lekki Phase 1, NigeriaHQ checked Sep 22, 2026	51-200	36 contacts →
	Indirect evidence “Zamam Offshore Services Limited (ZOSL) is a Nigerian oilfield services company responsible for the provision of production support services to the oil and gas industry in Africa…” Source: RevenueBase Database · checked Sep 22, 2026
9	Subsea100 Global	Partial evidence	Port Harcourt, NigeriaHQ checked Sep 22, 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 22, 2026
10	Deepwater Engineering Limited DEL	Indirect evidence	Warri, NigeriaHQ checked Sep 22, 2026	11-50	29 contacts →
	Indirect 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 22, 2026
11	First Priority Resources International Limited	Indirect evidence	Lekki, NigeriaHQ checked Sep 22, 2026	51-200	26 contacts →
	Indirect evidence “First Priority Resources International Ltd (FPRIL) is a vibrant oil servicing company that offers Marine Logistics, Procurement, Engineering and Equipment Rental services.” Source: RevenueBase Database · checked Sep 22, 2026
12	Omasup Energy Services Limited	Indirect evidence	Port Harcourt, NigeriaHQ checked Sep 22, 2026	11-50	24 contacts →
	Indirect evidence “Oil & Gas Services company” Source: RevenueBase Database · checked Sep 22, 2026
13	Stelog Energy Group	Partial evidence	Port Harcourt, NigeriaHQ checked Sep 22, 2026	11-50	23 contacts →
	Partial evidence “STELOG Ltd since its establishment in 2008 and full offtake in 2012 is involved in Drilling, Intervention and Production services in the Oil and gas value chain.” Source: RevenueBase Database · checked Sep 22, 2026
14	XPO Marine Services Limited	Indirect evidence	Victoria Island, NigeriaHQ checked Sep 22, 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 22, 2026
15	Dovaheights Energy Limited	Indirect evidence	Lekki, NigeriaHQ checked Sep 22, 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 22, 2026
16	Atlantic Fenders And Support Services	Indirect evidence	Lagos Island, NigeriaHQ checked Sep 22, 2026	51-200	18 contacts →
	Indirect evidence “Welcome to the AFSS business page.” Source: RevenueBase Database · checked Sep 22, 2026
17	Deep Water Consultancy & Engineering Services LTD	Partial evidence	Lekki, NigeriaHQ checked Sep 22, 2026	11-50	15 contacts →
	Partial 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 22, 2026
18	Atlantic Marine & Oilfield Services LTD	Partial evidence	Ikoyi, NigeriaHQ checked Sep 22, 2026	51-200	15 contacts →
	Partial 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 22, 2026
19	Rotawn Energy & Logistics	Indirect evidence	Lekki, NigeriaHQ checked Sep 22, 2026	11-50	15 contacts →
	Indirect evidence “Rotawn Energy & Logistics specializes and has the requisite expertise and experience in the provision of Offshore Support Vessels Services, Maritime Security Services, Ship to…” Source: RevenueBase Database · checked Sep 22, 2026
20	Tethys Plantgeria LTD	Indirect evidence	Port Harcourt, NigeriaHQ checked Sep 22, 2026	11-50	13 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026
21	Brisktrade	Indirect evidence	Lagos, NigeriaHQ checked Sep 22, 2026	11-50	11 contacts →
	Indirect evidence “Brisktrade is a 100% Nigerian owned company, incorporated in 2009 and began operations in the Oil & Gas industry in 2014, with offices in Lagos and an operational base in Port…” Source: RevenueBase Database · checked Sep 22, 2026
22	Ramec Integrated Services Limited Risl A Subsidiary Of Ramec Group	Partial evidence	Port Harcourt, NigeriaHQ checked Sep 22, 2026	51-200	10 contacts →
	Partial evidence “RAMEC Integrated Services Limited (RISL) is a subsidiary of the RAMEC GROUP, a wholly indigenous Nigerian company, offering services in Directional Drilling, Measurement While…” Source: RevenueBase Database · checked Sep 22, 2026
23	Masije OIL & Integrated Services LTD	Partial evidence	Port-harcourt, NigeriaHQ checked Sep 22, 2026	11-50	10 contacts →
	Partial evidence “Masije Oil & Integrated Services is the largest indigenous Well intervention Services provider in Nigeria.” Source: RevenueBase Database · checked Sep 22, 2026
24	Mesc Energy Services	Partial evidence	Port Harcourt, NigeriaHQ checked Sep 22, 2026	11-50	8 contacts →
	Partial evidence “MESC Energy Services offers drilling, well intervention, pipeline and asset integrity services focused to deliver efficiency.” Source: RevenueBase Database · checked Sep 22, 2026
25	Ethnarch Energy	Partial evidence	Lagos, NigeriaHQ checked Sep 22, 2026	11-50	5 contacts →
	Partial evidence “Ethnarch Energy is a privately owned oilfield solutions company, offering end-to-end aerial and subsea oilfield services including but not limited to UAVs, ROVs, SUBSEA and SURF…” Source: RevenueBase Database · checked Sep 22, 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 intervention service providers. 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 intervention service providers.
Partial evidence: Its own public description names part of subsea intervention service providers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name subsea intervention service providers. 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 136 subsea intervention service providers based in Nigeria

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Subsea intervention service providers based in Nigeria at a glance

As of Sep 22, 2026

14.5%Verified-email coverage

17.0Average contacts per company

11-50Median size (employees)

28.7%Largest-city concentration · Port Harcourt

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

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 136 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 intervention service providers, 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 intervention service providers”. 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 intervention service providers), 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 intervention service providers, 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, 335 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 22, 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 intervention service providers by metro

Subsea intervention service providers in Port Harcourt39
Subsea intervention service providers in Lagos32

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 intervention service providers, 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 intervention service providers are there based in Nigeria?

RevenueBase identified 136 subsea intervention service providers 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?

Hydrodive Group, headquartered in Lagos, tops this list with the largest team on record.

Which city has the most subsea intervention service providers?

Port Harcourt leads with 39 headquartered companies, followed by Lagos (32) and Lagos State (7).

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 335 verified decision-maker contacts tracked across these 136 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 22, 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.