Before the march could begin, Shackleton ordered the weakest animals to be shot, including the carpenter Harry McNish's cat, Mrs Chippy, and a pup which had become a pet of the surgeon Macklin.[58] The company set out on 30 October 1915, with two of the ship's lifeboats carried on sledges. Problems quickly arose as the condition of the sea ice around them worsened. According to Hurley the surface became "a labyrinth of hummocks and ridges" in which barely a square yard was smooth.[2] In three days, the party managed to travel barely two miles (3.2 km), and on 1 November, Shackleton abandoned the march; they would make camp and await the break-up of the ice.[59] They gave the name "Ocean Camp" to the flat and solid-looking floe on which their aborted march had ended, and settled down to wait.