Operation Pedestal (Italian: Battaglia di Mezzo Agosto, Battle of mid-August), known in Malta as Il-Konvoj ta' Santa Marija (Santa Maria Convoy), was a British operation to carry supplies to the island of Malta in August 1942, during the Second World War. Malta was a base from which British ships, submarines and aircraft attacked Axis convoys to Libya, during the North African Campaign (1940–1943). From 1940 to 1942, the Axis conducted the Siege of Malta, with air and naval forces. Despite many losses, enough supplies were delivered by the British for the population and military forces on Malta to resist, although it ceased to be an offensive base for much of 1942. The most crucial supply item in Operation Pedestal was fuel, carried by SS Ohio, an American tanker with a British crew. The c