state both mentally and physically. In these conditions, Shackleton decided to try to reach help, using one of the boats. The nearest port was Stanley in the Falkland Islands, away, but made unreachable by the prevailing westerly winds. A better option was to head for Deception Island, away at the western end of the South Shetland chain. Although it was uninhabited, Admiralty records indicated that this island held stores for shipwrecked mariners, and was also visited from time to time by whalers. However, reaching it would also involve a journey against the prevailing winds—though in less open seas—with ultimately no certainty when or if rescue would arrive. After discussions with the expedition's second-in-command, Frank Wild, and ship's captain Frank Worsley, Shackleton decided to attempt to reach the whaling stations of South Georgia, to the north-east. This would mean a longer boat journey of across the Southern Ocean, in conditions of rapidly approaching winter, but with the help of following winds it appeared feasible. Shackleton thought that "a boat party might make the voyage and be back with relief within a month, provided that the sea was clear of ice, and the boat survive the great seas". Preparations The South Georgia boat party could expect to meet hurricane-force winds and waves—the notorious Cape Horn Rollers—measuring from trough to crest as much as . Shackleton therefore selected the heaviest and strongest of the three boats, the long James Caird. It had been built as a whaleboat in London to Worsley's orders, designed on the "double-ended" tradition. Knowing that a heavily laden open sea voyage was now unavoidable, Shackleton had already asked the expedition's carpenter, Harry McNish to modify the boats during the weeks the expedition spent at Patience Camp. Using material taken from Endurance's fourth boat, a small motor launch which had been broken up with this purpose in mind before the ship's final loss, McNish had raised the sides of the James Caird and the Dudley Docker by 8–10 inches (20–25 cm). Now in the primitive camp on Elephant Island, McNish was again asked if he could make the James Caird more seaworthy. Using improvised tools and materials, McNish built a makeshift deck of wood and canvas, sealing his work with oil paints, lamp wick, and seal blood. The craft was strengthened by having the mast of the Dudley Docker lashed inside, along the length of her keel. She was then