"Parramatta" and "Yarra" were the first new ships launched for the Australian navy. After completion, the two vessels were temporarily commissioned into the Royal Navy for the delivery voyage to Australia, although they reverted to the control of the Commonwealth Naval Forces on arrival in Broome. "Warrego", however, was built up to launch condition, then disassembled, transported to Australia by ship, and rebuilt at Cockatoo Island Dockyard: the reasoning behind this was to raise the standard of the Australian shipbuilding industry by giving Cockatoo Island hands-on experience in warship construction. The second batch of three warships were all built at Cockatoo Island.