Frank A. Worsley was the Captain of the H. M. S. Endurance, the ship used by the legendary explorer Sir Ernest Shackleton in his 1914-16 expedition to the Antarctic. On its way to the Antarctic continent the Endurance became trapped and then crushed by ice, and the ship's party of twenty-eight drifted in an ice floe for five months. Finally reaching an uninhabited island, Shackleton, Worsley and four others sailed eight hundred miles in a small boat to the island of South Georgia, an astounding feat of navigation and courage. All hands survived this ill-fated expedition; as Worsley writes, 'By self-sacrifice and throwing his own life into the balance, (Shackleton) saved every one of his men...although at times it looked unlikely that one could be saved.'