These items are accepted as proof of ownership when registering a boat:
- A completed application for transfer of registration on the South Australian certificate of registration, signed by the current and the new registered owner.
- A bill of sale, receipt, or purchase contract signed by and showing the names of the current and new owners and including a description of the boat and its registration number (if applicable).
- An interstate Australian register of ships certificate of recreational registration, in the name of the proposed new owner.
- A certificate of commercial vessel registration in any Australian State, in the name of the proposed new registered owner.
- A statutory declaration of ownership of the boat signed and witnessed by a Justice of Peace (only acceptable if none of the other proof of ownership documents is available).
