A variety of useful links:

RAN Ship History.

https://seapower.navy.gov.au/fleet/ships-boats-craft/available-ship-histories?page=3&order=field_ship_decommissioned&sort=desc

How To Join The Australian Naval Cadets.

https://www.navycadets.gov.au/find-a-unit

Naval Association Of Australia.

https://navalassoc.org.au/

Sydney Harbour Trust.

https://www.harbourtrust.gov.au

Australian National Maritime Museum.

https://www.sea.museum/

Heritage Fleet Sydney.

https://www.shf.org.au/

NSW Maritime Information.

https://www.nsw.gov.au/driving-boating-and-transport/boating-and-marine

Devoted To The Preservation Of MV Cape Don.

https://seaheritagefoundation.org.au/