Ark Royal's intended strike role called for a large air group that could deliver a concentrated attack from farther behind the fleet. An enemy sheltering in harbor would also provide a target for that striking force. The Illustrious class was intended to operate nearer the battle line and provide continuing air support during fleet action. That exposed role helps explain why its smaller air group accompanied a heavier design and greater emphasis on survival.
Notable Point · 1:23:52-1:25:01
Ark Royal's strike role and Illustrious's fleet support
Ark Royal concentrated striking power from farther back, while Illustrious was intended to sustain air support nearer the battle line.