The vessel’s registration must be clearly visible in plain characters in a contrasting colour to the hull of your vessel.
| State | Classification | Minimum letter height |
|---|---|---|
| New South Wales | Personal water craft * | 100mm |
| Sailing vessel (primary) | 100mm | |
| Power boat | 150mm | |
| Queensland | Personal water craft * | 100mm |
| Vessel not capable of planing | 75mm | |
| Vessel capable of planing | 200mm | |
| South Australia | Craft less than 3m | 100mm |
| Craft greater than 3m | 150mm | |
| Tasmania | Any boat | 150mm |
| Victoria | Personal water craft * | 100mm |
| Any boat | 150mm | |
| Western Australia | Yacht | 50mm |
| Power Boat | 150mm |
* Jet ski or similar
