 At the time the final design of Indefatigable was approved , the Admiralty was already moving on , Fisher writing in September 1908 " I 've got Sir Philip Watts into a new Indomitable that will make your mouth water when you see it " , a design that was to eventually emerge as HMS Lion . In August 1909 the self @-@ governing dominions met at the 1909 Imperial Conference , and in discussion of Imperial defense , the Admiralty proposed the creation of indigenous fleet units , each to consist of one Invincible @-@ class battlecruiser , three light cruisers of the Bristol class , and six destroyers . These were to be based in Australia , New Zealand , Canada and South Africa in attempt to secure the naval defence of the Dominions while the Royal Navy concentrated in home waters to meet the German threat . While the scheme was rejected by Canada and South Africa , Australia and New Zealand subscribed , each ordering a modified version of the Indefatigable , rather than the originally proposed Invincible class . Australia became a ship of the newly formed Royal Australian Navy , while New Zealand was retained in European waters as a wholly RN unit . Eventually , only one fleet unit was formed , the Australian squadron in 1913 . 
