the air. Some 146 Ju 88s, 72 Bf 109s, 16 Ju 87s, 232 Italian fighters, and 139 Italian bombers (a large number being the highly effective Savoia-Marchetti SM.79 torpedo bomber) took part in the action against the convoy. Out of the 14 merchant ships sent, nine were sunk. Moreover, the aircraft carrier HMS Eagle, one cruiser and three destroyers were sunk by a combined effort from the Italian Navy, Kriegsmarine and Luftwaffe. Nevertheless, the operation though costly in lives and ships, was vital in bringing in much-needed war materials and supplies. British destroyers saved 950 of Eagles crew. The Regia Aeronautica had played the central role against the convoy. Indeed, according to Sadkovich and others, to pretend that the air offensive against Malta had been a purely German affair is misleading. According to Sadkovich, The surface convoys were not the only supply line to Malta. British submarines also made a substantial effort. The submarine was converted into an underwater supply ship. She could not go as deep or dive as quickly as the T- and U-class types, but she still made nine supply missions to Malta, which was more than any other vessel of its type. The ability of the submarine to carry large loads enabled it to be of great value in the campaign to lift the siege. Arrival of Keith Park In July, Hugh Lloyd was relieved of RAF command on Malta. It was felt that a man with past experience of fighter defence operations was needed. For some reason, the Air Staff did not choose to do this earlier, when the bombing ceased in 1941, and the RAF forces on Malta became primarily fighter-armed while the principal aim changed to one of air defence. Air Vice Marshal Keith Park replaced Lloyd as AOC. Park arrived on 14 July 1942 by flying boat. He landed in the midst of a raid although Lloyd had specifically requested he circle the harbour until it had passed. Lloyd met Park and admonished him for taking an unnecessary risk. Park had faced Kesselring before during the Battle of Britain. During that battle, Park had advocated sending small numbers of fighters into battle to meet the enemy. There were three fundamental reasons for this. First, there would always be fighters in the air covering those on the ground if one did not send their entire force to engage at once. Second, small numbers