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Certificate of operation (CoO)

If you own a domestic commercial vessel in Australia, generally you are required to get a certificate of operation before you operate the vessel.

What is a certificate of operation (CoO)?

A certificate of operation sets out the conditions under which a domestic commercial vessel—or fleet of vessels—must operate, including:

  • the vessels used in the operation
  • how and where the vessels can operate
  • other conditions we consider necessary due to the nature of either a vessel or an operation.

It is a condition of the certificate of operation that the vessel must have a safety management system that complies with the requirements in Marine Order 504.

Certificates of operation need to be renewed every five years.

A CoO is not transferable

A certificate of operation is held by the vessel's owner or operator and cannot be transferred. 

A certificate of operation is separate from vessel permissions such as a certificate of survey, which can be transferred. 

If you're buying a vessel, you will need to apply for a certificate of operation or add the vessel to your certificate if you already have one. Learn more about buying, selling or transferring a vessel. 

Crewing determination for larger vessels

If you operate or intend to operate a vessel that is ≥ 80 metres or ≥ 3000 GT or ≥ 3000 kW, you must apply for an appropriate crewing determination as part of your application for a certificate of operation. Find out more about how to apply for a crewing determination.

AMSA checks

We may check that you are meeting the conditions of your certificate of operation at any time. If we believe that you are not meeting the conditions of your certificate of operation, we may suspend or revoke your certificate.

Exemptions from needing a CoO

Vessels used for certain kinds of operations may be exempt from the requirement to have a CoO or from certain conditions on a CoO.

Check the types of operations that may be exempt:

An existing vessel may operate with the crewing requirements that applied to the vessel on 30 June 2013 but must otherwise comply with the current operational requirements in Marine Order 504.

CoO forms

Unsure? Get help

If you're not sure what you need to do, contact AMSA Connect for help.

Regulations

The rules about certificates of operation are contained in:

  • Schedule 1 of the Marine Safety (Domestic Commercial Vessels) National Law Act 2012
  • Marine Order 504 (Certificates of operation and operation requirements – national law)
Last updated: 14 October 2026