 From Friedrichshafen the planes refuelled at El Bouleïda, Algeria.On 23–24 June, eight of the original Operation Bellicose force of sixty Lancasters remained in Algeria for repairs and the remaining 52 bombed the Italian naval base at La Spezia, damaging an "oil depot" and an "armaments store" and continued to Britain without loss.The Zeppelin shed, long by wide and high, had been built at Friedrichshafen-Löwenthal airfield (now Friedrichshafen Airport) in 1930–1931 and used by the Zeppelin company's last and largest airships, the LZ 127 Graf Zeppelin, LZ 129 Hindenburg and LZ 130 Graf Zeppelin II.