Air Force (RAAF), the Royal Canadian Air Force (RCAF), the Royal New Zealand Air Force (RNZAF) and the South African Air Force all flew supplies into RAF Gatow during the Airlift. On 20 June 1980, the Royal Australian Air Force presented a Douglas Dakota to RAF Gatow in commemoration of its role. Its aircrew included Air Marshal David Evans, an Australian airlift veteran. As only British, French and American aircraft were allowed under international law to fly inside the Allied Air Corridors, the Dakota received the RAF serial number ZD215. The Dakota is still at Gatow, inside the German Air Force barracks. In November 1948, the latest RAF transport aircraft, the Handley Page Hastings, was added to the squadrons flying into RAF Gatow and some aircrews and aircraft were redeployed to train replacement aircrews. Many of these were based at RAF Schleswigland, near Jagel, which is currently used by the German Air Force and the Marineflieger. A Hastings aircraft, which served on the airlift and was later RAF Gatow's 'gate guardian' until the station's closure, is now preserved in the Alliierten Museum. By mid-December, the RAF had landed 100,000 tons of supplies. In April 1949, commercial airline companies involved in the airlift were formed into a Civil Airlift Division (co-ordinated by British European Airways) to operate under RAF control. Apart from BEA itself, these included a number of Britain's fledgling independent airlines as well, such as the late Sir Freddie Laker's Air Charter, Harold Bamberg's Eagle Aviation and Skyways. By mid-April, the combined airlift of all nations' operations managed to make 1,398 flights in 24 hours, carrying 12,940 tons (13,160 t) of goods, coal and machinery, beating their record of 8,246 (8,385 t) set only days earlier. RAF Gatow has the unique and unlikely distinction of being the base for the only known operational use of flying boats in central Europe, during the Berlin Blockade, on the nearby Wannsee, a lake in the Havel river. On 6 July 1948, the RAF began using 10 Short Sunderland and 2 Short Hythe flying boats, flying from Finkenwerder on the Elbe near Hamburg to Berlin. These were supplemented by the flying boat operations of Aquila Airways, an early post-war British independent airline that became an operating division of British Aviation Services. The flying boats' specialty was transporting bulk salt, which would have been very corrosive to other aircraft, but was not as corrosive