Company lists · Data refreshed November 2026

Top 23 Underwater contractors based in Australia

Name: Underwater contractors based in Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 303 companies tracked

RevenueBase identified 303 company matches for underwater contractors associated with Australia as of November 2026 and tracks 7,353 professional contacts across them, including 2,855 with verified work emails. Perth is the largest hub.

This list covers company matches for underwater contractors associated with Australia, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built

303Companies

7,353Contacts tracked

2,855Verified emails

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

The 23 largest underwater contractors based in Australia

Ranked by team size

Top 23 of 303 company matches for underwater contractors based in Australia, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	ASC PTY LTD	Exact match	Osborne, AustraliaHQ recorded Nov 6, 2026	1,001-5,000	2,061 contacts →
	Exact match “ASC Pty Ltd has proudly served as Australia’s submarine builder and sustainer for almost 40 years.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	Boskalis Offshore Energy	Exact match	Perth, AustraliaHQ recorded Nov 6, 2026	201-500	1,097 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	Australian Offshore Solutions PTY LTD	Exact match	Applecross, AustraliaHQ recorded Nov 6, 2026	501-1,000	292 contacts →
	Exact match “Australian Offshore Solutions Australian Offshore Solutions offers a diverse range of specialised marine services to the offshore oil and gas and construction industries.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	Total AMS	Exact match	North Fremantle, AustraliaHQ recorded Nov 6, 2026	201-500	204 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	Hall Contracting	Exact match	Buderim, AustraliaHQ recorded Nov 6, 2026	51-200	175 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	Maritime Constructions	Exact match	Port Adelaide, AustraliaHQ recorded Nov 6, 2026	51-200	151 contacts →
	Exact match “Maritime Constructions is a complete provider of specialist marine infrastructure solutions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	Pacific Marine Group	Exact match	Townsville, AustraliaHQ recorded Nov 6, 2026	51-200	129 contacts →
	Exact match “Who Are We?” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	ROB Carr PTY LTD	Exact match	Yatala, AustraliaHQ recorded Nov 6, 2026	51-200	124 contacts →
	Exact match “Rob Carr offers advanced technical capabilities for utilities infrastructure and is recognised as a market leader in microtunnelling and other complex underground works across all…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	JAYDO	Exact match	Melbourne, AustraliaHQ recorded Nov 6, 2026	51-200	80 contacts →
	Exact match “Jaydo is a dedicated water infrastructure construction business where every member of our experienced team is committed to delivering outstanding value and service to our many…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	Westfill PTY LTD	Exact match	Perth, AustraliaHQ recorded Nov 6, 2026	51-200	74 contacts →
	Exact match “Westfill is a specialised underground mining contractor and service provider based in Western Australia, with decades of boots-on-the-ground experience and practical knowledge to…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	Brady Marine & Civil	Exact match	Brisbane, AustraliaHQ recorded Nov 6, 2026	51-200	66 contacts →
	Exact match “Since 2010, Brady Marine & Civil have proudly delivered design and construction solutions for over water works, from simple marine structures to complex civil infrastructure…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	Polyseal Group Australia	Exact match	St Peters, AustraliaHQ recorded Nov 6, 2026	201-500	59 contacts →
	Exact match “Since its inception in 1989, Polyseal has remained a prominent contractor in the Australia waterproofing and remedial markets.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	Waterproofing Integrity	Exact match	Silverwater, AustraliaHQ recorded Nov 6, 2026	51-200	59 contacts →
	Exact match “Waterproofing Integrity offers independent third-party design consultation and quality control inspection services for waterproofing systems to ensure the intended performance and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	JFD Australia	Exact match	Perth, AustraliaHQ recorded Nov 6, 2026	1,001-5,000	44 contacts →
	Exact match “Confidence under pressure.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	SMC Marine	Exact match	Rozelle, AustraliaHQ recorded Nov 6, 2026	51-200	43 contacts →
	Exact match “Established in 2001, SMC Marine is a maritime contractor with a wide range of marine construction capabilities.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	Saltire Infrastructure	Exact match	O'connor, AustraliaHQ recorded Nov 6, 2026	51-200	37 contacts →
	Exact match “Saltire is a water industry focused engineered services provider specialise in system continuity that undertakes pipeline construction, repair, and maintenance works.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	Water Infrastructure Services	Exact match	Burpengary East, AustraliaHQ recorded Nov 6, 2026	11-50	35 contacts →
	Exact match “Water Infrastructure Services (WIS) is a trusted, reliable, and experienced contractor that delivers potable and raw water infrastructure support to QLD utilities and companies.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	Metrocorp Technologies PTY LTD	Exact match	Caringbah, AustraliaHQ recorded Nov 6, 2026	11-50	34 contacts →
	Exact match “For over 30 years, we have played an essential role in the remediation and maintenance of critical concrete infrastructure that businesses and communities rely on every day.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	Thrust Maritime Pty. LTD	Exact match	Dandenong South, AustraliaHQ recorded Nov 6, 2026	11-50	32 contacts →
	Exact match “Thrust Maritime is a leading Australian engineering company specialising in the design, manufacture, integration, installation and operation of high-integrity marine Launch and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	Commercial Marine Group PTY LTD	Exact match	Murarrie, AustraliaHQ recorded Nov 6, 2026	11-50	32 contacts →
	Exact match “At Commercial Marine Group, we provide trusted, innovative and sustainable marine construction solutions, ensuring the safety, longevity, and success of critical infrastructure.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	Loftus Contracting PTY LTD	Exact match	Gladstone, AustraliaHQ recorded Nov 6, 2026	51-200	29 contacts →
	Exact match “Loftus Contracting was established in Gladstone Central Queensland in 2019 with the focus to better service local industry and government departments in all facets of Civil…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	Coastwide Civil PTY Limited	Exact match	Albion Park Rail, AustraliaHQ recorded Nov 6, 2026	51-200	27 contacts →
	Exact match “Coastwide Civil is a civil contracting company operating from Albion Park in NSW.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	Polaris Marine Constructions PTY LTD	Exact match	Rozelle, AustraliaHQ recorded Nov 6, 2026	11-50	25 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “underwater contractors”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 23 of 303 underwater contractors based in Australia

See the full list, filter by size, metro and specialty, and access 2,855 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Underwater contractors based in Australia at a glance

As of Nov 6, 2026

38.8%Verified-email coverage

24.3Average contacts per company

11-50Median size (employees)

6.9%Largest-city concentration · Perth

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

128

11-50

115

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 303 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with Australia whose business descriptions match “underwater contractors” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 2,855 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “underwater contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many underwater contractors are there based in Australia?

RevenueBase identified 303 company matches for underwater contractors associated with Australia as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

ASC PTY LTD tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most underwater contractors?

Perth leads with 21 company records, followed by Melbourne (12) and Sydney (10).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 2,855 professional contacts with verified work emails tracked across these 303 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 2026.

Ready to reach these companies? Verified emails and direct dials for all 303 underwater contractors based in Australia. Start with a free account, no credit card.

Download this list →

Related lists

Underwater contractors by geography

Browse the directory

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 SmartSearch, 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.