Company lists · Data refreshed September 2026

Top 11 Offshore fabrication yards based in Nigeria

RevenueBase identified 69 offshore fabrication yards headquartered in Nigeria as of September 2026 and tracks 1,618 professional contacts across them, including 122 with verified work emails. Port Harcourt is the largest hub.

This list covers offshore fabrication yards 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 17, 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 17, 2026 86% judged on-target in blind review
69Companies
1,618Contacts tracked
122Verified emails
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The 11 largest offshore fabrication yards based in Nigeria

Ranked by team size
Top 11 of 69 offshore fabrication yards based in Nigeria, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to offshore fabrication yards: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Strong evidencePort Harcourt, NigeriaHQ checked Sep 17, 2026501-1,000394 contacts →

Strong evidence

“Aveon Offshore Limited is an engineering and fabrication services company that has been providing construction and general fabrication services for the oil and gas industry since…”

Source: RevenueBase Database · checked Sep 17, 2026
2Partial evidenceOke-shasha, NigeriaHQ checked Sep 17, 2026201-50094 contacts →

Partial evidence

“NIVAFER Engineering & Construction Limited is a steel fabrication and erection outfit offering unparalleled engineering & construction services to the Oil and Gas industry…”

Source: RevenueBase Database · checked Sep 17, 2026
3Indirect evidenceLagos, NigeriaHQ checked Sep 17, 202651-20048 contacts →

Indirect evidence

“With headquarters in Lagos, Nigeria, NigerStar7 is a company wholly owned by Subsea7.”

Source: RevenueBase Database · checked Sep 17, 2026
4Indirect evidenceOsubi-warri, NigeriaHQ checked Sep 17, 2026201-50045 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 17, 2026
5Strong evidenceLekki Phase 1, NigeriaHQ checked Sep 17, 2026501-1,00035 contacts →

Strong 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 17, 2026
6Indirect evidenceLagos, NigeriaHQ checked Sep 17, 202611-5021 contacts →

Indirect evidence

“Quest Oil and Engineering Services Limited is a value-driven company offering full-service in oil and gas, as well as engineering service.”

Source: RevenueBase Database · checked Sep 17, 2026
7Indirect evidencePort Harcourt, NigeriaHQ checked Sep 17, 202611-5013 contacts →

Indirect evidence

“Doxa Int’l Engineering Services Ltd is an engineering-based support services company bridging the gap between IOCs and OEMs.”

Source: RevenueBase Database · checked Sep 17, 2026
8Indirect evidenceLagos, NigeriaHQ checked Sep 17, 202611-5011 contacts →

Indirect evidence

“Timproxy operates a diversified business with a special focus on Oil and Gas, Marine, and Power industry.”

Source: RevenueBase Database · checked Sep 17, 2026
9Partial evidenceIbeju-lekki, NigeriaHQ checked Sep 17, 202611-506 contacts →

Partial evidence

Offshore Dimensions Limited: Leading Engineering, Procurement and Construction Management Company in Nigeria Servicing the Energy, Oil and Gas We are a renowned engineering…”

Source: RevenueBase Database · checked Sep 17, 2026
10Indirect evidencePort Harcourt, NigeriaHQ checked Sep 17, 20261-106 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 17, 2026
11Partial evidenceOwerri, NigeriaHQ checked Sep 17, 202611-502 contacts →

Partial evidence

“Ariboil Company Limited is a steel fabrication and solids control services company based out of Egbu, Owerri North L.G.A, Imo State, Nigeria.”

Source: RevenueBase Database · checked Sep 17, 2026

Showing 11 of 69 offshore fabrication yards based in Nigeria

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Offshore fabrication yards based in Nigeria at a glance

As of Sep 17, 2026
7.5%Verified-email coverage
23.4Average contacts per company
11-50Median size (employees)
26.1%Largest-city concentration · Port Harcourt
Sep 17, 2026Page data refreshed

Companies by employee count

1-10
8
11-50
29
51-200
17
201-500
9
501-1,000
4
1,001-5,000
1

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 69 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 fabrication yards, 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 fabrication yards”. 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 fabrication yards), 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 fabrication yards, 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, 122 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 17, 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 offshore fabrication yards, 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 fabrication yards are there based in Nigeria?

RevenueBase identified 69 offshore fabrication yards 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?

Aveon Offshore Limited, headquartered in Port Harcourt, tops this list with the largest team on record.

Which city has the most offshore fabrication yards?

Port Harcourt leads with 18 headquartered companies, followed by Lagos (11) and Rivers (8).

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 122 verified decision-maker contacts tracked across these 69 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 17, 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.