Although the threat from the French Fleet had been neutralised, Cunningham was still aware of the threat posed by the Italian Fleet to British North African operations, based in Egypt. Although the Royal Navy had won in several actions in the Mediterranean, considerably upsetting the balance of power, the Italians who were following the theory of a fleet in being had left their ships in harbour. This made the threat of a sortie against the British Fleet a serious problem. At the time the harbour at Taranto contained six battleships (five of them battle-worthy), seven heavy cruisers, two light cruisers, and eight destroyers. The Admiralty, concerned with the potential for an attack, had drawn up Operation "Judgement"; a surprise attack on Taranto Harbour. To carry out the attack, the Admiralty sent the new aircraft carrier , commanded by Lumley Lyster, to join in Cunningham's fleet.