In NSW, the seabreacher is classed as an unsafe vessel. It cannot be registered for general use. Approval may be considered for demonstrations.

What is a seabreacher?

This information is current as of March 2012.

A seabreacher is a submersible craft that’s capable of becoming airborne and doing aerial rolls. It can carry 2 people, is approximately 4.9m in length and powered by a rotax engine with jet drive.

Seabreachers are available in various models, each capable of a maximum surface speed of around 65km/h, a maximum submerged speed of around 32km/h and a depth of almost two metres.

Risks when using a seabreacher

Seabreachers have been linked to a number of issues on NSW navigable waters:

  • While the craft has a CCTV fitted to the top fin/sail, wash generated at speed, oscillation and vibration of the vessel, can restrict the ability to keep a proper lookout.
  • There is limited ability to determine whether underwater obstructions exist, prior to undertaking any diving.
  • Collision damage can reduce a seabreacher’s ability to float and sink.


The seabreacher is not suitable for registration and use in NSW. It is considered to be an unsafe vessel under Sections 44 and 45 of the Marine Safety Act 1998 and Clause 76(2)(b) of the Marine Safety Regulation 2016.

It may be approved for use for demonstration purposes, in a controlled situation and in a known environment – but only under aquatic event licence conditions.

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