Company lists · Data refreshed September 2026

Top 25 Marine environmental engineering companies based in Australia

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

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 406 companies tracked

RevenueBase identified 406 marine environmental engineering companies headquartered in Australia as of September 2026 and tracks 8,036 professional contacts across them, including 3,127 with verified work emails. Perth is the largest hub.

This list covers marine environmental engineering companies headquartered in Australia, 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

406Companies

8,036Contacts tracked

3,127Verified emails

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The 25 largest marine environmental engineering companies based in Australia

Ranked by team size

Top 25 of 406 marine environmental engineering companies based in Australia, 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	Boskalis Offshore Energy	Indirect evidence	Perth, AustraliaHQ checked Sep 17, 2026	201-500	1,029 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
2	GO Offshore	Partial evidence	West Perth, AustraliaHQ checked Sep 17, 2026	201-500	576 contacts →
	Partial evidence “GO OFFSHORE is an international energy services company, specialising in marine services to the offshore industry.” Source: RevenueBase Database · checked Sep 17, 2026
3	Bhagwan Marine	Partial evidence	Perth, AustraliaHQ checked Sep 17, 2026	501-1,000	376 contacts →
	Partial evidence “Bhagwan Marine is Australia's largest marine solutions provider operating in the offshore energy, subsea, ports & inshore and defence sectors.” Source: RevenueBase Database · checked Sep 17, 2026
4	Australian Offshore Solutions PTY LTD	Partial evidence	Applecross, AustraliaHQ checked Sep 17, 2026	501-1,000	273 contacts →
	Partial evidence “Australian Offshore Solutions Australian Offshore Solutions offers a diverse range of specialised marine services to the offshore oil and gas and construction industries.” Source: RevenueBase Database · checked Sep 17, 2026
5	Jbs&g	Partial evidence	Sydney, AustraliaHQ checked Sep 17, 2026	201-500	262 contacts →
	Partial evidence “Established in 1996, JBS & G is one of Australia’s leading environmental consultancies with offices in Sydney, Melbourne, Perth, Adelaide, Brisbane, Canberra, Darwin, Wollongong…” Source: RevenueBase Database · checked Sep 17, 2026
6	Enviropacific	Partial evidence	Macquarie Park, AustraliaHQ checked Sep 17, 2026	201-500	260 contacts →
	Partial evidence “Enviropacific is committed to working towards creating safer environments and sustainable communities.” Source: RevenueBase Database · checked Sep 17, 2026
7	Tonkin	Strong evidence	Adelaide, AustraliaHQ checked Sep 17, 2026	201-500	237 contacts →
	Strong evidence “Tonkin is a leading provider of engineering, environmental and consultancy services to private and public organisations.” Source: RevenueBase Database · checked Sep 17, 2026
8	Total AMS	Partial evidence	North Fremantle, AustraliaHQ checked Sep 17, 2026	201-500	198 contacts →
	Partial evidence “For more than 25 years, TAMS has partnered with clients through collaborative delivery models, applying specialist expertise to construct and maintain critical marine and port…” Source: RevenueBase Database · checked Sep 17, 2026
9	Senversa	Strong evidence	Melbourne, AustraliaHQ checked Sep 17, 2026	201-500	181 contacts →
	Strong evidence “Senversa is an Australian, employee-owned environmental, engineering & sustainability professional services firm, specialising in the provision of environmental approvals, ground…” Source: RevenueBase Database · checked Sep 17, 2026
10	Hall Contracting	Partial evidence	Buderim, AustraliaHQ checked Sep 17, 2026	51-200	165 contacts →
	Partial evidence “Hall Contracting is Australia’s largest privately-owned dredging, civil and marine construction company with offices in South East Asia, the Pacific Islands and Australia.” Source: RevenueBase Database · checked Sep 17, 2026
11	Maritime Constructions	Partial evidence	Port Adelaide, AustraliaHQ checked Sep 17, 2026	51-200	124 contacts →
	Partial evidence “Maritime Constructions is a complete provider of specialist marine infrastructure solutions.” Source: RevenueBase Database · checked Sep 17, 2026
12	Shelf Subsea	Strong evidence	Osborne Park, AustraliaHQ checked Sep 17, 2026	51-200	119 contacts →
	Strong evidence “SHELF is a totally independent commercial diving, engineering, project management and marine support & logistics company.” Source: RevenueBase Database · checked Sep 17, 2026
13	Pacific Marine Group	Indirect evidence	Townsville, AustraliaHQ checked Sep 17, 2026	51-200	117 contacts →
	Indirect evidence “Who Are We?” Source: RevenueBase Database · checked Sep 17, 2026
14	Earth Systems	Partial evidence	Port Melbourne, AustraliaHQ checked Sep 17, 2026	51-200	101 contacts →
	Partial evidence “At Earth Systems, we believe that solving the world’s environmental challenges requires more than just knowledge-it takes innovation and action.” Source: RevenueBase Database · checked Sep 17, 2026
15	Epic Environmental	Partial evidence	Brisbane, AustraliaHQ checked Sep 17, 2026	51-200	94 contacts →
	Partial evidence “Epic offers industry leading environmental solutions to national and selected international markets.” Source: RevenueBase Database · checked Sep 17, 2026
16	EI Australia	Strong evidence	Pyrmont, AustraliaHQ checked Sep 17, 2026	51-200	93 contacts →
	Strong evidence “Welcome to EI Australia an Australian-owned, ISO 9001, 14001 & 4801 Certified, professional services company providing Environmental, Geotechnical and Structural engineering…” Source: RevenueBase Database · checked Sep 17, 2026
17	Opec Systems	Strong evidence	Lennox Head, AustraliaHQ checked Sep 17, 2026	51-200	70 contacts →
	Strong evidence “Public and private sector organisations across the globe choose OPEC Systems to creatively and intelligently solve their environmental engineering challenges.” Source: RevenueBase Database · checked Sep 17, 2026
18	Norship	Strong evidence	Portsmith, AustraliaHQ checked Sep 17, 2026	51-200	70 contacts →
	Strong evidence “Norship is a diversified marine services business that delivers sustainment, engineering and manufacturing services to highly valued Defence, Commercial and Private sector…” Source: RevenueBase Database · checked Sep 17, 2026
19	Hydrobiology	Partial evidence	Milton, AustraliaHQ checked Sep 17, 2026	11-50	67 contacts →
	Partial evidence “Hydrobiology is an Environmental Consulting Company offering integrated services in the physical, biological and chemical processes of environmental systems with a particular…” Source: RevenueBase Database · checked Sep 17, 2026
20	Brady Marine & Civil	Partial evidence	Brisbane, AustraliaHQ checked Sep 17, 2026	51-200	56 contacts →
	Partial evidence “Since 2010, Brady Marine & Civil have proudly delivered design and construction solutions for over water works, from simple marine structures to complex civil infrastructure…” Source: RevenueBase Database · checked Sep 17, 2026
21	O2marine	Strong evidence	Fremantle, AustraliaHQ checked Sep 17, 2026	51-200	48 contacts →
	Strong evidence “O2 Marine provides clients with efficient and high quality environmental and project outcomes.” Source: RevenueBase Database · checked Sep 17, 2026
22	Anderson Environment & Planning	Partial evidence	Carrington, AustraliaHQ checked Sep 17, 2026	51-200	44 contacts →
	Partial evidence “Anderson Environment & Planning is an environmental consulting company based out of 10 Darvall St, Carrington, Australia.” Source: RevenueBase Database · checked Sep 17, 2026
23	MBS Environmental	Partial evidence	West Perth, AustraliaHQ checked Sep 17, 2026	11-50	44 contacts →
	Partial evidence “MBS Environmental (formerly Martinick McNulty Pty Ltd) was established in 1978 and is based in Perth, Western Australia.” Source: RevenueBase Database · checked Sep 17, 2026
24	Core Consultants	Strong evidence	Coolum Beach, AustraliaHQ checked Sep 17, 2026	11-50	42 contacts →
	Strong evidence “Geotechnical Engineering and Environmental Science” Source: RevenueBase Database · checked Sep 17, 2026
25	MECHA	Partial evidence	Gladstone Central, AustraliaHQ checked Sep 17, 2026	51-200	42 contacts →
	Partial evidence “Established in 2016, Mecha provides engineered mechanical solutions to major industry including mining, marine and manufacturing.” 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 406 marine environmental engineering companies based in Australia

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Marine environmental engineering companies based in Australia at a glance

As of Sep 17, 2026

38.9%Verified-email coverage

19.8Average contacts per company

1-10Median size (employees)

11.1%Largest-city concentration · Perth

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

226

11-50

122

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured worldwide rather than for Australia, so it is reported there. Company counts and contact totals on this page are exact for Australia, over 406 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 Australia 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 Australia 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, 3,127 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 Perth45

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 Australia?

RevenueBase identified 406 marine environmental engineering companies headquartered in Australia 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?

Boskalis Offshore Energy, headquartered in Perth, tops this list with the largest team on record.

Which city has the most marine environmental engineering companies?

Perth leads with 45 headquartered companies, followed by Brisbane (24) and Sydney (19).

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 3,127 verified decision-maker contacts tracked across these 406 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.