prepare for a transcontinental crossing of Antarctica. Before reaching its destination, the ship became trapped in pack ice, and by 14 February 1915 was held fast, despite prolonged efforts to free her. During the following eight months the crew stayed with the ship as she drifted northward in the ice until, on 27 October, she was crushed by the pack's pressure, finally sinking on 21 November. As his 27-man crew set up camp on the slowly moving ice, Shackleton's focus shifted to how best to save his party. His first plan was to march across the ice to the nearest land, and try to reach a point that ships were known to visit. The march began, but progress was hampered by the nature of the ice's surface, later described by Shackleton as "soft, much broken up, open leads intersecting the floes at all angles". After struggling to make headway over several days, they abandoned the march; the party established "Patience Camp" on a flat ice floe, and waited as the drift carried them further north, towards open water. They had managed to salvage the three boats, which Shackleton had named after the principal backers of the expedition: Stancomb-Wills, Dudley Docker and James Caird. The party waited until 8 April 1916, when they finally took to the boats as the ice started to break up. Over a perilous period of seven days they sailed and rowed through stormy seas and dangerous loose ice, to reach the temporary haven of Elephant Island on 15 April. Elephant Island Elephant Island, on the eastern limits of the South Shetland Islands, was remote from anywhere that the expedition had planned to go, and far beyond normal shipping routes. No relief ship would search for them there, and the likelihood of rescue from any other outside agency was equally negligible. The island was bleak and inhospitable, and its terrain devoid of vegetation, although it had fresh water, and a relative abundance of seals and penguins to provide food and fuel for immediate survival. The rigours of an Antarctic winter were fast approaching; the narrow shingle beach where they were camped was already being swept by almost continuous gales and blizzards, which destroyed one of the tents in their temporary camp, and knocked others flat. The pressures and hardships of the previous months were beginning to tell on the men, many of whom were in a run-down