Early Australian submarines were crucial for fleet protection, surveillance, and intelligence.


  1. HMAS AE1 and AE2 arrived in 1914.
  2. AE1, the first allied submarine lost in World War I, was found in 2017 off PNG.
  3. AE2 became legendary for navigating the mine-infested Dardanelles Strait in 1915 during the ANZAC Campaign.
  4. Australia's submarine strategy involves adapting global designs to meet local defence needs.