Could Cockatoo Island's dockyard handle a King George V-class battleship?
Short answerYes; its largest dock could handle HMS Hood, though historically there was only one dock of that size.
NotesA viewer asks whether an enlarged Cockatoo Island could handle a King George V-class battleship. A dock capable of taking HMS Hood could also take the shorter battleship. The historical facility had only one dock of that scale, however. The counterfactual therefore requires additional large-dock capacity rather than a wholly new understanding of the harbor's physical limits.