Company lists · Data refreshed September 2026

Top 25 Marine and subsea consulting firms based in Nigeria

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

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 461 companies tracked

RevenueBase identified 461 marine and subsea consulting firms headquartered in Nigeria as of September 2026 and tracks 5,250 professional contacts across them, including 598 with verified work emails. Lagos is the largest hub.

This list covers marine and subsea consulting firms 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 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

461Companies

5,250Contacts tracked

598Verified emails

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The 25 largest marine and subsea consulting firms based in Nigeria

Ranked by team size

Top 25 of 461 marine and subsea consulting firms based in Nigeria, 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	Hydrodive Group	Partial evidence	Lagos, NigeriaHQ checked Sep 28, 2026	201-500	409 contacts →
	Partial 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 28, 2026
2	Dover Engineering Limited	Indirect evidence	Port Harcourt, NigeriaHQ checked Sep 28, 2026	501-1,000	315 contacts →
	Indirect evidence “Dover Engineering Limited is a reputable Engineering Design,EPC, Operations & Maintenance Company.” Source: RevenueBase Database · checked Sep 28, 2026
3	Ariosh	Partial evidence	Lagos, NigeriaHQ checked Sep 28, 2026	201-500	243 contacts →
	Partial 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 28, 2026
4	Nlng Shipping And Marine Services Limited	Indirect evidence	Port Harcourt, NigeriaHQ checked Sep 28, 2026	501-1,000	190 contacts →
	Indirect evidence “NSML was incorporated as a private limited liability company on October 9, 2008 and started operations in 2010 as a ship manning company.” Source: RevenueBase Database · checked Sep 28, 2026
5	Kohasa Engineering Company Limited	Indirect evidence	Port Harcourt, NigeriaHQ checked Sep 28, 2026	11-50	139 contacts →
	Indirect 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 28, 2026
6	Arion Energy Services Limited	Partial evidence	Lagos, NigeriaHQ checked Sep 28, 2026	51-200	114 contacts →
	Partial evidence “Arion Energy Services is an engineering, projects, and operations service provider to the oil and gas, power and maritime industries.” Source: RevenueBase Database · checked Sep 28, 2026
7	PFL Engineering Services Limited	Indirect evidence	Lekki, NigeriaHQ checked Sep 28, 2026	501-1,000	90 contacts →
	Indirect evidence “PFL Engineering Services Limited (PFL) is an indigenous company established in 2002.” Source: RevenueBase Database · checked Sep 28, 2026
8	Aviam Offshore Engineering Company Limited	Indirect evidence	Lagos, NigeriaHQ checked Sep 28, 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 28, 2026
9	Elper Oilfield Engineering	Partial evidence	Lagos, NigeriaHQ checked Sep 28, 2026	501-1,000	70 contacts →
	Partial evidence “ELPER has built in time, a strong international network, and a specialized engineering company, providing services ranging from Engineering Procurement & Construction to Marine…” Source: RevenueBase Database · checked Sep 28, 2026
10	Crestech Engineering Limited, Lagos - Nigeria	Indirect evidence	Lagos, NigeriaHQ checked Sep 28, 2026	51-200	67 contacts →
	Indirect evidence “Crestech is an Engineering Design and Project Management Company with its head office in Victoria Island, Lagos, Nigeria.” Source: RevenueBase Database · checked Sep 28, 2026
11	Frazimex Engineering Limited	Indirect evidence	Port Harcourt, NigeriaHQ checked Sep 28, 2026	201-500	58 contacts →
	Indirect evidence “FRAZIMEX ENGINEERING LIMITED, a member of Oilserv group was incorporated in 2005 under the laws of the Federal republic of Nigeria as a private limited liability company that…” Source: RevenueBase Database · checked Sep 28, 2026
12	Sellafield Energy	Indirect evidence	Lekki, NigeriaHQ checked Sep 28, 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 28, 2026
13	PEM Offshore Group	Partial evidence	Port-harcourt, NigeriaHQ checked Sep 28, 2026	11-50	52 contacts →
	Partial evidence “PEM Offshore offers a wide range of products and services aimed at improving safety, quality and reliability in the marine, oil and gas sector.” Source: RevenueBase Database · checked Sep 28, 2026
14	Pisces Offshore Limited	Indirect evidence	Port Harcourt, NigeriaHQ checked Sep 28, 2026	11-50	41 contacts →
	Indirect evidence “Who We Are Pisces Offshore was created to provide offshore positioning and survey services in the West African region.” Source: RevenueBase Database · checked Sep 28, 2026
15	Emobella Engineering Nigeria Limited	Indirect evidence	Ikeja, NigeriaHQ checked Sep 28, 2026	11-50	38 contacts →
	Indirect evidence “Emobella Engineering Nigeria Limited is an indigenous engineering support service company incorporated in 2015 under the laws of the Federal Republic of Nigeria, A registered…” Source: RevenueBase Database · checked Sep 28, 2026
16	Gremoore Limited	Indirect evidence	Lekki Phase 1, NigeriaHQ checked Sep 28, 2026	501-1,000	35 contacts →
	Indirect 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 28, 2026
17	Subsea100 Global	Partial evidence	Port Harcourt, NigeriaHQ checked Sep 28, 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 28, 2026
18	Deepwater Engineering Limited DEL	Indirect evidence	Warri, NigeriaHQ checked Sep 28, 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 28, 2026
19	ILF Consulting Engineers In Nigeria	Partial evidence	Victoria Island, NigeriaHQ checked Sep 28, 2026	51-200	27 contacts →
	Partial evidence “ILF Consulting Engineers in Nigeria is part of the ILF Group, an internationally active, completely independent engineering and consultancy group which supports its customers in…” Source: RevenueBase Database · checked Sep 28, 2026
20	Faocon Nigeria Limited	Indirect evidence	Anthony Village, NigeriaHQ checked Sep 28, 2026	11-50	24 contacts →
	Indirect evidence “FAOCON is a privately owned company which specializes in Consultancy, Engineering and Construction.” Source: RevenueBase Database · checked Sep 28, 2026
21	Bicens Resources Limited	Indirect evidence	Warri, NigeriaHQ checked Sep 28, 2026	501-1,000	22 contacts →
	Indirect evidence “Bicens Resources Limited is a tech savvy multidisciplinary firm with competencies in the Oil & Gas Industry, Providing and delivering exceptional solutions in DRILLING,OPERATIONS…” Source: RevenueBase Database · checked Sep 28, 2026
22	Breeze Energy Limited	Indirect evidence	Lekki, NigeriaHQ checked Sep 28, 2026	51-200	22 contacts →
	Indirect evidence “Breeze Energy Limited is a proudly African company managed by a team of seasoned professionals with extensive experience in Oil & Gas Services, Humanitarian and Disaster Relief…” Source: RevenueBase Database · checked Sep 28, 2026
23	Independent Project Monitoring Company Ipmc Limited	Indirect evidence	Lagos, NigeriaHQ checked Sep 28, 2026	51-200	22 contacts →
	Indirect evidence “Independent Project Monitoring Company Limited is a group of professional individuals, who are competent and capable enough to help clients achieve their goals.” Source: RevenueBase Database · checked Sep 28, 2026
24	Eems Limited Engineering And Environmental Management Services Limited	Partial evidence	Fct-abuja, NigeriaHQ checked Sep 28, 2026	11-50	21 contacts →
	Partial evidence “ABOUT US: EEMS Limited is a multi-disciplinary consulting firm incorporated as a limited liability company under the Companies and Allied Matters Act 1990 in September 1997.” Source: RevenueBase Database · checked Sep 28, 2026
25	West African Fenders LTD	Partial evidence	Apapa, NigeriaHQ checked Sep 28, 2026	11-50	21 contacts →
	Partial evidence “West African Fenders is a world class marine Company with an aim to provide marine services to targeted business environments in Africa with the view of growing into regions in…” 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 461 marine and subsea consulting firms based in Nigeria

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Marine and subsea consulting firms based in Nigeria at a glance

As of Sep 28, 2026

11.4%Verified-email coverage

11.4Average contacts per company

11-50Median size (employees)

22.8%Largest-city concentration · Lagos

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

104

11-50

221

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 461 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 Nigeria 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 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, 598 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 Nigeria?

RevenueBase identified 461 marine and subsea consulting firms 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 marine and subsea consulting firms?

Lagos leads with 105 headquartered companies, followed by Port Harcourt (105) and Lagos State (33).

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 598 verified decision-maker contacts tracked across these 461 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.

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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.