HMAS Platypus ( 1917 ) transferred to the RAN in 1919 and scrapped in 1958 .
HMAS Platypus ( 1917 ) is a submarine depot ship built for the Royal Navy as HMS Penguin in 1917 .
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 .