Why choose Sydney rather than Adelaide for the fleet base?

Would Adelaide be a better base because it offers more room and lies farther from the theater?

Probably not; Sydney has a defensible harbor and substantial existing naval infrastructure to build upon.

A viewer proposes Adelaide as a more spacious and more distant industrial site. Sydney remains preferable because its harbor is strong and defensible, while Cockatoo Island and Garden Island already provide foundations for expansion. Brisbane is also mentioned as a possible modern suggestion, but the scenario follows locations actually considered at the time. Existing infrastructure and contemporary policy choices matter alongside open land on a map.