the frozen surface of the Weddell Sea. Castaway After the Endurance was abandoned, Greenstreet's duties again changed. He was given brief command of a team of sled dogs, and helped to hunt for fresh meat to supplement the castaways' inadequate supply of food. Shackleton later recalled with gratitude how Greenstreet and his hunting partner, Alexander Macklin, had killed and brought in a Weddell seal weighing 800 pounds. At a slightly later stage of their self-rescue, after the icy campsite of the men of the Endurance had drifted northward into warmer water, the change in water temperature caused their refuge to melt and on 9 April 1916 they were forced to climb aboard the open boats that they had salvaged from their former vessel. Shackleton and his men had salvaged three lifeboats, and Greenstreet was the fourth-ranking member of the expedition. He accompanied his captain, Frank Worsley, in the Dudley Docker during the eight-day ordeal that marked the progress of the open-boat flotilla to a new and more secure campsite on Elephant Island in the archipelago of the South Shetlands. Greenstreet, although characterised by Worsley as "a fine seaman", was not chosen to accompany the six-man party that set out from Elephant Island to South Georgia Island. Instead the former first officer was detailed to a two-man party, working with William Bakewell, to alter bits and scraps of salvaged ship's canvas into a jury-rigged canvas deck to enable the sole remaining sail-worthy lifeboat of the ship's company, the James Caird, to navigate in the open sea. Worsley, whose life would depend upon the success of this work, describes it as follows: Frozen like a board and caked with ice, the canvas was sewn, in painful circumstances, by two cheery optimists – Greenstreet, Chief Officer of the Endurance, and Bakewell, a Canadian [sic] AB. The only way they could do it was by holding the frozen canvas in the blubber fire till it thawed, often burning their fingers, while the oily smoke got in their eyes and noses, half-blinding and choking them. Then they sewed, often getting frostbitten and having to use great care that the difficult sewing with cold, brittle sail needles did not break all of our now scanty supply. All the time, while repeating the unpleasant task of thawing a length, and sewing it, 'Horace' [Greenstreet] was irrepressibly cracking his sailor jokes and Bakewell replying. The sails hoisted, Shackleton,