Company lists · Data refreshed September 2026

Top 16 Subsea installation contractors based in Australia

RevenueBase identified 51 subsea installation contractors headquartered in Australia as of September 2026 and tracks 775 professional contacts across them, including 361 with verified work emails. Perth is the largest hub.

This list covers subsea installation contractors 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 18, 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 18, 2026 86% judged on-target in blind review
51Companies
775Contacts tracked
361Verified emails
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The 16 largest subsea installation contractors based in Australia

Ranked by team size
Top 16 of 51 subsea installation contractors based in Australia, ranked by team size, largest first. Data refreshed Sep 18, 2026. RevenueBase Smart Search rates how each company's information relates to subsea installation contractors: 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
1Partial evidencePerth, AustraliaHQ checked Sep 18, 20261,001-5,000252 contacts →

Partial evidence

“Cyan Renewables (rebranded from MMA Offshore in July 2025) is a leading provider of marine and subsea services supporting the global energy transition.”

Source: RevenueBase Database · checked Sep 18, 2026
2Partial evidenceOsborne Park, AustraliaHQ checked Sep 18, 2026201-50040 contacts →

Partial evidence

“Geo Oceans are an innovative subsea technology company offering industry-leading survey and inspection services to the Oil & Gas industry, we are proud to be part of the Vertech…”

Source: RevenueBase Database · checked Sep 18, 2026
3Partial evidenceRozelle, AustraliaHQ checked Sep 18, 202651-20036 contacts →

Partial evidence

“Established in 2001, SMC Marine is a maritime contractor with a wide range of marine construction capabilities.”

Source: RevenueBase Database · checked Sep 18, 2026
4Indirect evidenceMurarrie, AustraliaHQ checked Sep 18, 202611-5033 contacts →

Indirect evidence

“At Commercial Marine Group, we provide trusted, innovative and sustainable marine construction solutions, ensuring the safety, longevity, and success of critical infrastructure.”

Source: RevenueBase Database · checked Sep 18, 2026
5Partial evidenceWelshpool, AustraliaHQ checked Sep 18, 202611-5028 contacts →

Partial evidence

“Blakemere - Subsea | Mining | Energy”

Source: RevenueBase Database · checked Sep 18, 2026
6Indirect evidenceNorth Plympton, AustraliaHQ checked Sep 18, 202651-20015 contacts →

Indirect evidence

“The company established in South Australia in September 1993 was formed to provide a specialized service to all divisions of the underground cabling and trenching industrial…”

Source: RevenueBase Database · checked Sep 18, 2026
7Indirect evidenceCanning Vale, AustraliaHQ checked Sep 18, 20261-105 contacts →

Indirect evidence

“DART Technologies (DARTT) is an engineering company founded in 2009 and is located in Perth, Western Australia.”

Source: RevenueBase Database · checked Sep 18, 2026
8Partial evidenceBrisbane, AustraliaHQ checked Sep 18, 202611-505 contacts →

Partial evidence

Subsea Pty Ltd is a professional marine company offering a wide range of subsea services in support of environmental and engineering surveys and assessments.”

Source: RevenueBase Database · checked Sep 18, 2026
9Indirect evidencePerth, AustraliaHQ checked Sep 18, 202611-505 contacts →

Indirect evidence

“Infinity Offshore is a completely INDEPENDENT service provider specialising in PM & E for all projects on and under water.”

Source: RevenueBase Database · checked Sep 18, 2026
10Partial evidenceMelbourne, AustraliaHQ checked Sep 18, 202611-504 contacts →

Partial evidence

SubseaCo is a project management, engineering and project control company that specializes in subsea and offshore projects.”

Source: RevenueBase Database · checked Sep 18, 2026
11Indirect evidencePerth, AustraliaHQ checked Sep 18, 20261-103 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 18, 2026
12Partial evidenceCarrum Downs, AustraliaHQ checked Sep 18, 202611-502 contacts →

Partial evidence

“Dive Works provides innovative subsea inspection, maintenance and repair (IMR), survey services and emergency response, both inshore and offshore.”

Source: RevenueBase Database · checked Sep 18, 2026
13Indirect evidenceMount Waverley, AustraliaHQ checked Sep 18, 20261-102 contacts →

Indirect evidence

“Overview Mooring System Solutions Pty Ltd.(trading as Moorsure) brings together leaders in the field of advanced mooring engineering services and a global supplier of a wide range…”

Source: RevenueBase Database · checked Sep 18, 2026
14Partial evidenceMaida Vale, AustraliaHQ checked Sep 18, 20261-102 contacts →

Partial evidence

“Seadraulics tooling utilizes the latest technologies to supply innovative solutions to subsea operators in a form that removes much client intervention to get the tooling to work.”

Source: RevenueBase Database · checked Sep 18, 2026
15Indirect evidenceSouth Fremantle, AustraliaHQ checked Sep 18, 202611-501 contacts →

Indirect evidence

“Our highly qualified and experienced personnel, state of the art equipment, facilities and commitment to meeting and exceeding client expectations has put Indianic at the…”

Source: RevenueBase Database · checked Sep 18, 2026
16Indirect evidencePort Lincoln, AustraliaHQ checked Sep 18, 20261-101 contacts →

Indirect evidence

“Occupational Diving and Heavy Fabrication Engineering”

Source: RevenueBase Database · checked Sep 18, 2026

Showing 16 of 51 subsea installation contractors based in Australia

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Subsea installation contractors based in Australia at a glance

As of Sep 18, 2026
46.6%Verified-email coverage
15.2Average contacts per company
11-50Median size (employees)
25.5%Largest-city concentration · Perth
Sep 18, 2026Page data refreshed

Companies by employee count

1-10
21
11-50
20
51-200
8
201-500
1
1,001-5,000
1

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 51 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 subsea installation contractors, 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 “subsea installation contractors”. 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 subsea installation contractors), 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 subsea installation contractors, 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, 361 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 18, 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 subsea installation contractors, 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 subsea installation contractors are there based in Australia?

RevenueBase identified 51 subsea installation contractors 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?

Cyan Renewables, headquartered in Perth, tops this list with the largest team on record.

Which city has the most subsea installation contractors?

Perth leads with 13 headquartered companies, followed by Brisbane (2) and Fremantle (2).

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 361 verified decision-maker contacts tracked across these 51 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 18, 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.