Thomas Mahnken も指摘しているが、豪は昔から自国を大陸国家と認識していて、海洋安全保障には無関心。

"Although girded by the Pacific and Indian Oceans, and possessing a capable navy for part of its history, Australia’s outlook has historically been continental rather than maritime.  Indeed, as the Australian strategic thinker Michael Evans has argued, Australia has historically lacked a maritime consciousness to guide defense policy."

https://www.thecipherbrief.com/canberras-evolving-security-policy-2