Company lists · Data refreshed September 2026

Top 25 Offshore vessel operators based in Nigeria

Name: Offshore vessel operators based in Nigeria
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 205 companies tracked

RevenueBase identified 205 offshore vessel operators headquartered in Nigeria as of September 2026 and tracks 3,409 professional contacts across them, including 360 with verified work emails. Lagos is the largest hub.

This list covers offshore vessel operators 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 20, 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 20, 2026 86% judged on-target in blind review

205Companies

3,409Contacts tracked

360Verified emails

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The 25 largest offshore vessel operators based in Nigeria

Ranked by team size

Top 25 of 205 offshore vessel operators based in Nigeria, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to offshore vessel operators: 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	Strong evidence	Lagos, NigeriaHQ checked Sep 20, 2026	201-500	409 contacts →
	Strong 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 20, 2026
2	Ocean Marine Solutions LTD	Indirect evidence	Port Harcourt, NigeriaHQ checked Sep 20, 2026	201-500	196 contacts →
	Indirect evidence “Ocean Marine Solutions Ltd is a strategically positioned organization operating the marine industry to provide solutions to high-risks security concerns in Nigerian waters.” Source: RevenueBase Database · checked Sep 20, 2026
3	Nlng Shipping And Marine Services Limited	Indirect evidence	Port Harcourt, NigeriaHQ checked Sep 20, 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 20, 2026
4	Arion Energy Services Limited	Indirect evidence	Lagos, NigeriaHQ checked Sep 20, 2026	51-200	114 contacts →
	Indirect 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 20, 2026
5	Starzs Investments Company Limited Official Linkedin Account Of Sicl	Indirect evidence	Port Harcourt, NigeriaHQ checked Sep 20, 2026	201-500	112 contacts →
	Indirect evidence “Starzs Investments Company Limited (SICL) is one of Nigeria’s foremost indigenous marine logistics service providers, delivering safe and professional solutions to international…” Source: RevenueBase Database · checked Sep 20, 2026
6	Emval Nigeria Limited	Partial evidence	Lekki, NigeriaHQ checked Sep 20, 2026	51-200	109 contacts →
	Partial 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 20, 2026
7	Mariteam Nigeria LTD	Partial evidence	Lagos Island, NigeriaHQ checked Sep 20, 2026	11-50	88 contacts →
	Partial evidence “Mariteam Nigeria Ltd is a fully licensed Nigeria company actively involved in a range of services in offshore maritime and oil & gas sector in Nigeria.” Source: RevenueBase Database · checked Sep 20, 2026
8	Caverton Offshore Support Group PLC	Partial evidence	Victoria Island, NigeriaHQ checked Sep 20, 2026	501-1,000	88 contacts →
	Partial evidence “Caverton Offshore Support Group Plc is the public limited company holding Caverton Helicopters Limited and Caverton Marine Limited.” Source: RevenueBase Database · checked Sep 20, 2026
9	Bricks Mursten Mattoni LTD	Indirect evidence	Apapa, NigeriaHQ checked Sep 20, 2026	51-200	71 contacts →
	Indirect evidence “BRICKS was established in 2008 with the aim of providing a comprehensive package of services, tailored to our client’s requirements in the chain of sectors.” Source: RevenueBase Database · checked Sep 20, 2026
10	Stac Marine Offshore Limited	Partial evidence	Lagos Nigeria, NigeriaHQ checked Sep 20, 2026	201-500	41 contacts →
	Partial evidence “STAC Marine Offshore is a prominent indigenous Nigerian company known for its commitment to service excellence in the operation and maintenance of Floating Production Storage and…” Source: RevenueBase Database · checked Sep 20, 2026
11	AB Offshore Marine Services Limited	Strong evidence	Lagos, NigeriaHQ checked Sep 20, 2026	51-200	41 contacts →
	Strong evidence “AB Offshore Marine Services (formerly Ashbard Marine Services Limited) is an independent, Nigerian based Offshore Marine Support Service and Escort Vessel company principally set…” Source: RevenueBase Database · checked Sep 20, 2026
12	Pisces Offshore Limited	Partial evidence	Port Harcourt, NigeriaHQ checked Sep 20, 2026	11-50	41 contacts →
	Partial 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 20, 2026
13	ODENL	Partial evidence	Lagos, NigeriaHQ checked Sep 20, 2026	201-500	36 contacts →
	Partial evidence “Ocean Deep Drilling ESV Nigeria Limited (ODENL) is the Nigerian joint venture of Valaris, the world's leading offshore drilling services provider.” Source: RevenueBase Database · checked Sep 20, 2026
14	Subsea100 Global	Partial evidence	Port Harcourt, NigeriaHQ checked Sep 20, 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 20, 2026
15	Zircon Marine Limited	Indirect evidence	Lagos, NigeriaHQ checked Sep 20, 2026	11-50	30 contacts →
	Indirect evidence “Zircon Marine is an indigenous Nigerian Company with globally benchmarked expertise in marine operations that provides marine services to the upstream and downstream sector of the…” Source: RevenueBase Database · checked Sep 20, 2026
16	Deepwater Engineering Limited DEL	Partial evidence	Warri, NigeriaHQ checked Sep 20, 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 20, 2026
17	First Priority Resources International Limited	Indirect evidence	Lekki, NigeriaHQ checked Sep 20, 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 20, 2026
18	West African Fenders LTD	Indirect evidence	Apapa, NigeriaHQ checked Sep 20, 2026	11-50	21 contacts →
	Indirect 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 20, 2026
19	XPO Marine Services Limited	Partial evidence	Victoria Island, NigeriaHQ checked Sep 20, 2026	11-50	18 contacts →
	Partial 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 20, 2026
20	Atlantic Fenders And Support Services	Indirect evidence	Lagos Island, NigeriaHQ checked Sep 20, 2026	51-200	18 contacts →
	Indirect evidence “Welcome to the AFSS business page.” Source: RevenueBase Database · checked Sep 20, 2026
21	Rotawn Energy & Logistics	Strong evidence	Lekki, NigeriaHQ checked Sep 20, 2026	11-50	15 contacts →
	Strong 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 20, 2026
22	Afrikdelta Marine Limited Adml	Indirect evidence	Lagos, NigeriaHQ checked Sep 20, 2026	11-50	14 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
23	Ejovi Dredging And Marine Services Limited	Indirect evidence	Effurun Delta State, NigeriaHQ checked Sep 20, 2026	201-500	13 contacts →
	Indirect evidence “For over two decades, Ejovi Dredging and Marine Service has been a major player in the Nigerian Oil & Gas Industry, providing world class service to her clients.” Source: RevenueBase Database · checked Sep 20, 2026
24	Tethys Plantgeria LTD	Indirect evidence	Port Harcourt, NigeriaHQ checked Sep 20, 2026	11-50	13 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
25	DD Grand Services Limited	Partial evidence	Port Harcourt, NigeriaHQ checked Sep 20, 2026	51-200	13 contacts →
	Partial evidence “DD GRAND SERVICES LIMITED is a frontline maritime logistics (vessel chattering/management) security services company and it is wholly indigenous under the Companies and Allied…” Source: RevenueBase Database · checked Sep 20, 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: offshore vessel operators. 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 offshore vessel operators.
Partial evidence: Its own public description names part of offshore vessel operators, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name offshore vessel operators. 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 205 offshore vessel operators based in Nigeria

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Offshore vessel operators based in Nigeria at a glance

As of Sep 20, 2026

10.6%Verified-email coverage

16.6Average contacts per company

11-50Median size (employees)

28.8%Largest-city concentration · Lagos

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

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 205 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 offshore vessel operators, 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 “offshore vessel operators”. 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 offshore vessel operators), 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 offshore vessel operators, 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, 360 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 20, 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.

Offshore vessel operators by metro

Offshore vessel operators in Lagos59
Offshore vessel operators in Port Harcourt48

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 offshore vessel operators, 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 offshore vessel operators are there based in Nigeria?

RevenueBase identified 205 offshore vessel operators 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 offshore vessel operators?

Lagos leads with 59 headquartered companies, followed by Port Harcourt (48) 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 360 verified decision-maker contacts tracked across these 205 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 20, 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.