HMAS Platypus

Several ships and shore establishments of the Royal Australian Navy have been named HMAS Platypus, after the platypus:

• HMAS Platypus (1868), the former HMVS Cerberus.
• HMAS Platypus (1917), a submarine depot ship built for the Royal Navy as HMS Penguin in 1917, transferred to the RAN in 1919 and scrapped in 1958.
• HMAS Platypus (naval base), a submarine shore base on Sydney Harbour between 1967 and 1999.