Endurance was the three-masted barquentine in which Sir Ernest Shackleton and a crew of 27 men and one cat sailed for the Antarctic on the 1914–1917 Imperial Trans-Antarctic Expedition. She was launched in 1912 from Sandefjord in Norway; three years later, she was crushed by pack ice and sank in the Weddell Sea off Antarctica. All of her crew survived.