A second carrier at Taranto

What might a second carrier have changed at Taranto?

It could have strengthened the raid enough to keep more of the Italian fleet out of effective action for longer.

An additional carrier could have delivered a stronger strike at Taranto. The likely consequence would be more lasting disruption to the Italian battle fleet, with wider effects in the Mediterranean. Plans also existed for a second night of attacks and for battleships to move in and bombard after the air strike, possibilities that became harder without the second carrier. Carrier availability could increase striking mass, sustain follow-up action, and create operational leverage beyond the first raid.