Underwater inspection and repair contractor

Inspect, clean and repair jetties, moorings and pipes underwater for marinas, councils and water operators.

Diver in helmet inspecting a submerged structure underwater.
Startup costA$25k to A$120k
Monthly revenueA$15k to A$60k
Time needed25+ h/week
First incomeMonths
  • A$25k-120k
  • Full-time
  • Out and about
  • Licence or permit needed

Estimates for a small start in Australia, not guarantees.

What it is

A small commercial dive team that inspects and fixes underwater structures such as jetties, pylons, moorings, intakes, pipes and tanks. Work usually includes video or photo reports and minor repairs.

Your first three steps

  1. Check which commercial diving qualifications your state or territory work health and safety regulator accepts, and book the training you need
  2. Line up a reliable dive partner or tender, and get quotes for insurance and surface-supplied dive gear
  3. Introduce yourself to local marinas, councils and engineers, and ask to join their approved contractor lists
Who pays

Marinas, councils, port and harbour operators, water utilities, aquaculture farms and engineering firms.

How it makes money

Day rates or fixed quotes per job, plus extra for reports, equipment hire and travel. Repeat maintenance contracts give steadier income than one-off jobs.

Skills that help
  • Commercial diving qualification
  • Safety planning and supervision
  • Basic underwater repair and inspection skills
  • Clear report writing
Watch out for
  • Commercial diving is regulated under work health and safety laws, so check the required qualifications and standards with your state regulator
  • Public liability and professional indemnity insurance, and check whether your cover includes diving work
  • You usually need a team (diver, standby diver and supervisor), so factor in wages and workers compensation once you hire
  • Larger clients often ask for safety management plans and contractor prequalification, which takes time to set up
  • Diving is high risk, with medicals and equipment servicing needed on a regular basis
  • Work can be uneven, so revenue in the early months may sit at the low end of the range while you build contracts

Deep research report · Australia

Everything you need to start: underwater inspection and repair contractor

Researched with live web search for Australia: real startup prices, the licences and rules, what others charge, a break-even example, how to find your first customers and a 30-day launch plan. With sources.

  • Startup costs with real prices
  • Licences, registration and rules
  • Pricing: what others charge
  • Break-even example
  • Finding your first customers
  • 30-day launch plan
  • Risks and how to reduce them
Ready in about 2 minutes · one-off payment, tax included

See a full sample report

Questions people ask

How much does it cost to start an underwater inspection business?

Startup costs are estimates, typically around $25,000 to $120,000, depending on your diving equipment, vessel or vehicle needs, insurance and how much safety documentation you set up. A team of diver, standby diver and supervisor adds wage costs.

How much can a commercial diving contractor earn?

Monthly revenue is estimated at typically around $15,000 to $60,000, depending on the contracts you win. Work can be uneven, so early months may sit at the low end while you build relationships with marinas, councils and operators.

What rules apply to commercial diving work in Australia?

Commercial diving is regulated under work health and safety laws, so check the required qualifications and standards with your state regulator. Also check insurance, including whether your cover includes diving, plus workers compensation if you hire and any client prequalification requirements.

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