Company lists · Data refreshed September 2026

Top 25 Marine environmental engineering companies based in South Africa

Name: Marine environmental engineering companies based in South Africa
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 137 companies tracked

RevenueBase identified 137 marine environmental engineering companies headquartered in South Africa as of September 2026 and tracks 1,934 professional contacts across them, including 609 with verified work emails. Cape Town is the largest hub.

This list covers marine environmental engineering companies headquartered in South Africa, 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

137Companies

1,934Contacts tracked

609Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest marine environmental engineering companies based in South Africa

Ranked by team size

Top 25 of 137 marine environmental engineering companies based in South Africa, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to marine environmental 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	Dormac	Strong evidence	Durban, South AfricaHQ checked Sep 17, 2026	501-1,000	272 contacts →
	Strong evidence “Dormac Marine is a dynamic engineering company offering vessel owners and operators complete turnkey solutions for repair, refurbishment and modifications of assets through a full…” Source: RevenueBase Database · checked Sep 17, 2026
2	Jones & Wagener PTY LTD	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 17, 2026	51-200	228 contacts →
	Indirect evidence “Jones & Wagener is a specialist firm of consulting engineers and scientists based in South Africa.” Source: RevenueBase Database · checked Sep 17, 2026
3	Sandock Austral Shipyards	Indirect evidence	Durban, South AfricaHQ checked Sep 17, 2026	501-1,000	154 contacts →
	Indirect evidence “Boasting the enviable reputation of being the largest Shipyard in Southern Africa as well as still holding the record for building the largest Ship ever built on the African…” Source: RevenueBase Database · checked Sep 17, 2026
4	Axess Africa	Partial evidence	Cape Town, South AfricaHQ checked Sep 17, 2026	51-200	144 contacts →
	Partial evidence “Axess Group creates world-class sustainable solutions for leading players in the oil and gas, wind energy, marine, and infrastructure industries worldwide.” Source: RevenueBase Database · checked Sep 17, 2026
5	OSC Marine Group	Partial evidence	Cape Town, South AfricaHQ checked Sep 17, 2026	51-200	104 contacts →
	Partial evidence “OSC Group – a forging of underwater innovation and engineering expertise.” Source: RevenueBase Database · checked Sep 17, 2026
6	Southern African Shipyards	Partial evidence	Durban, South AfricaHQ checked Sep 17, 2026	201-500	71 contacts →
	Partial evidence “Southern African Shipyards is Africa’s leading commercial and naval Ship Builder and Ship Repair Company, providing cost effective services and solutions to the Marine Industry…” Source: RevenueBase Database · checked Sep 17, 2026
7	ECO Elementum	Strong evidence	City Of Tshwane, South AfricaHQ checked Sep 17, 2026	51-200	68 contacts →
	Strong evidence “Established in 2013, Eco Elementum is a leading environmental and engineering consultancy.” Source: RevenueBase Database · checked Sep 17, 2026
8	Linsen Nambi	Partial evidence	Durban, South AfricaHQ checked Sep 17, 2026	51-200	60 contacts →
	Partial evidence “Linsen Nambi is an entrepreneurial organisation focused on niche opportunities in maritime and midstream-energy.” Source: RevenueBase Database · checked Sep 17, 2026
9	Hesper Engineering	Strong evidence	Cape Town, South AfricaHQ checked Sep 17, 2026	11-50	50 contacts →
	Strong evidence “Hesper Engineering is a ship repair and marine mechanical engineering specialist situated in Paarden Eiland, Cape Town in close proximity to Table Bay Harbour.” Source: RevenueBase Database · checked Sep 17, 2026
10	Cinco Engineering PTY LTD	Partial evidence	Cape Town, South AfricaHQ checked Sep 17, 2026	11-50	49 contacts →
	Partial evidence “As an owner-managed entity, Cinco Engineering offers a full scope of engineering services that draws on the strength of its shareholding companies.” Source: RevenueBase Database · checked Sep 17, 2026
11	Singo Consulting	Indirect evidence	Emalahleni, South AfricaHQ checked Sep 17, 2026	51-200	44 contacts →
	Indirect evidence “Singo Consulting (Pty) Ltd is a private independent research consultancy and advisory company based in eMalahleni (Witbank), holding no equity in any project and is owned by the…” Source: RevenueBase Database · checked Sep 17, 2026
12	Zitholele Consulting	Strong evidence	Midrand, South AfricaHQ checked Sep 17, 2026	11-50	33 contacts →
	Strong evidence “ZITHOLELE CONSULTING, offers Specialist Consulting Services in the fields of Engineering, Environmental Management, Waste Management and Strategic Communication.” Source: RevenueBase Database · checked Sep 17, 2026
13	Allweld Marine And Industrial	Strong evidence	Cape Town, South AfricaHQ checked Sep 17, 2026	51-200	33 contacts →
	Strong evidence “Allweld, a Cape Town-based marine and industrial engineering company, has been servicing the Southern African market for over fifty years.” Source: RevenueBase Database · checked Sep 17, 2026
14	Groundtruth	Partial evidence	Hilton, South AfricaHQ checked Sep 17, 2026	11-50	32 contacts →
	Partial evidence “An award-winning multidisciplinary consulting company with over 20 years experience in water, biodiversity, and engineering across aquatic and terrestrial ecosystems.” Source: RevenueBase Database · checked Sep 17, 2026
15	Kimopax Group	Strong evidence	Midrand, South AfricaHQ checked Sep 17, 2026	11-50	31 contacts →
	Strong evidence “Kimopax is a company rendering specialized services in selected earth and environmental sciences, engineering disciplines and related project management functions.” Source: RevenueBase Database · checked Sep 17, 2026
16	Project Management International	Strong evidence	South AfricaHQ checked Sep 17, 2026	11-50	30 contacts →
	Strong evidence “Project Management International (PMI) is a dynamic project management company specialising in tailor-made Marine Construction, Engineering Services and Survey & Site…” Source: RevenueBase Database · checked Sep 17, 2026
17	Nouum Engineering PTY LTD	Partial evidence	Cape Town, South AfricaHQ checked Sep 17, 2026	11-50	24 contacts →
	Partial evidence “Founded in 2016, Nouum consistently provides turnkey solutions for the maritime and stationary power industries.” Source: RevenueBase Database · checked Sep 17, 2026
18	JMA Consulting	Partial evidence	Delmas, South AfricaHQ checked Sep 17, 2026	11-50	21 contacts →
	Partial evidence “INTRODUCTION JMA Consulting (Pty) Ltd is an environmental consulting company which comprises of highly trained professionals, each of whom are registered with the South African…” Source: RevenueBase Database · checked Sep 17, 2026
19	PETEC	Strong evidence	Cape Town, South AfricaHQ checked Sep 17, 2026	51-200	19 contacts →
	Strong evidence “MARINE HYDRAULIC ENGINEERS SINCE 1988 As a trusted provider of engineering services and solutions, Petec Services has continuously evolved to meet the dynamic needs of the marine…” Source: RevenueBase Database · checked Sep 17, 2026
20	Coastwise Consulting	Partial evidence	Durban, South AfricaHQ checked Sep 17, 2026	1-10	16 contacts →
	Partial evidence “CoastWise Consulting is a specialist environmental consulting company operating in collaboration with like-minded specialists in the coastal and estuarine environments” Source: RevenueBase Database · checked Sep 17, 2026
21	Envitech	Strong evidence	Parktown North, South AfricaHQ checked Sep 17, 2026	11-50	15 contacts →
	Strong evidence “Envitech is a professional engineering group of companies focusing on sustainable technologies and projects in the environmental, waste management and mining sectors.” Source: RevenueBase Database · checked Sep 17, 2026
22	SEA Technology Services	Partial evidence	Cape Town, South AfricaHQ checked Sep 17, 2026	1-10	14 contacts →
	Partial evidence “Sea Technology Services is a Cape Town based Oceanographic Engineering and Services company, established in 1995.” Source: RevenueBase Database · checked Sep 17, 2026
23	Guillaume NEL Environmental Consultants Gnec	Partial evidence	Paarl, South AfricaHQ checked Sep 17, 2026	11-50	14 contacts →
	Partial evidence “We specialize in Environmental Impact Assessments, Basic Assessment Reports, Environmental Control Officers, Water Use Licenses Application, Waste Management and Mining…” Source: RevenueBase Database · checked Sep 17, 2026
24	Nsovo Environmental Consulting	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 17, 2026	11-50	13 contacts →
	Indirect evidence “Our specialist area of focus is the assessment of multifaceted projects, including the establishment of linear developments, bulk infrastructure, power generation and…” Source: RevenueBase Database · checked Sep 17, 2026
25	Sillito Environmental Consulting PTY LTD	Partial evidence	Cape Town, South AfricaHQ checked Sep 17, 2026	11-50	10 contacts →
	Partial evidence “Sillito Environmental Consulting provides expertise in the areas of environmental authorisation, licencing, monitoring and auditing, contamination assessment, development of…” Source: RevenueBase Database · checked Sep 17, 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 environmental 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 marine environmental engineering companies.
Partial evidence: Its own public description names part of marine environmental engineering companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name marine environmental 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 137 marine environmental engineering companies based in South Africa

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 609 reachable decision-makers.

Free signup · no credit card

View the full list →

Marine environmental engineering companies based in South Africa at a glance

As of Sep 17, 2026

31.5%Verified-email coverage

14.1Average contacts per company

1-10Median size (employees)

22.6%Largest-city concentration · Cape Town

Sep 17, 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 South Africa, so it is reported there. Company counts and contact totals on this page are exact for South Africa, over 137 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 environmental 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 South Africa whose own description of what they do matches “marine environmental 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 marine environmental 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 marine environmental engineering companies, and records with no verified work email. Companies headquartered outside South Africa 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 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.

Marine environmental engineering companies by metro

Marine environmental engineering companies in Cape Town31

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 environmental 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 marine environmental engineering companies are there based in South Africa?

RevenueBase identified 137 marine environmental engineering companies headquartered in South Africa 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?

Dormac, headquartered in Durban Durban, tops this list with the largest team on record.

Which city has the most marine environmental engineering companies?

Cape Town leads with 31 headquartered companies, followed by Pretoria (11) and Durban (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 609 verified decision-maker contacts tracked across these 137 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.

Ready to reach these companies? Verified emails and direct dials for all 137 marine environmental engineering companies based in South Africa. Start with a free account, no credit card.

Download this list →

Related lists

Marine environmental engineering companies by geography

Browse the directory

Browse: Companies home · All South Africa lists · All Marine environmental engineering companies lists · New lists

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.