Scott, Wilson and Shackleton left on 2 November 1902 with dogs and supporting parties. Their goal was "to get as far south in a straight line on the Barrier ice as we can, reach the Pole if possible, or find some new land". The first significant milestone was passed on 11 November, when a supporting party passed Borchgrevink's Farthest South record of 78°50′. However, the lack of skill with dogs was soon evident, and progress was slow. After the support parties had returned, on 15 November, Scott's group began relaying their loads (taking half loads forward, then returning for the other half), thus travelling three miles for every mile of southward progress. Mistakes had been made with the dogs' food, and as the dogs grew weaker, Wilson was forced to kill the weakest as food for the others. The men, too, were struggling, afflicted by snow blindness, frostbite and symptoms of early scurvy, but they continued southwards in line with the mountains to the west. Christmas Day was celebrated with double rations, and a Christmas pudding that Shackleton had kept for the occasion, hidden with his socks. On 30 December 1902, without having left the Barrier, they reached their Furthest South at 82°17′S. Troubles multiplied on the home journey, as the remaining dogs died and Shackleton collapsed with scurvy. Wilson's diary entry for 14 January 1903 acknowledged that "we all have slight, though definite symptoms of scurvy". Scott and Wilson struggled on, with Shackleton, who was unable to pull, walking alongside and occasionally carried on the sledge. The party eventually reached the ship on 3 February 1903 after covering including relays, in 93 days' travel at a daily average of just over .