Imperial Trans-Antarctic Expedition: SY Aurora, anchored in McMurdo Sound, broke loose during a gale, beginning a 312-day ordeal in the Ross Sea and Southern Ocean for her 18-man crew.

The Imperial Trans-Antarctic Expedition of 1914–1917 is considered to be the last major expedition of the Heroic Age of Antarctic Exploration. Conceived by Sir Ernest Shackleton, the expedition was an attempt to make the first land crossing of the Antarctic continent. After Roald Amundsen's South Pole expedition in 1911, this crossing remained, in Shackleton's words, the "one great main object of Antarctic journeyings". Shackleton's expedition failed to accomplish this objective but became recognised instead as an epic feat of endurance.

SY Aurora was a 580-ton barque-rigged steam yacht built by Alexander Stephen and Sons Ltd. in Dundee, Scotland, in 1876, for the Dundee Seal and Whale Fishing Company. She was 165 feet (50 m) long with a 30-foot (9.1 m) beam. The hull was made of oak, sheathed with greenheart and lined with fir. The bow was a mass of solid wood reinforced with steel-plate armour. The heavy side frames were braced by two levels of horizontal oak beams. Its primary use was whaling in the northern seas, and it was built sturdily enough to withstand the heavy weather and ice that would be encountered there. That strength proved useful for Antarctic exploration as well and between 1911 and 1917 it made five trips to the continent, for both exploration and rescue missions.

The McMurdo Sound is a sound in Antarctica, known as the southernmost passable body of water in the world, located approximately 1,300 kilometres (810 mi) from the South Pole.

The drift of the Antarctic exploration vessel SY Aurora was an ordeal which lasted 312 days, affecting the Ross Sea party of Sir Ernest Shackleton's Imperial Trans-Antarctic Expedition, 1914–1917. It began when the ship broke loose from its anchorage in McMurdo Sound in May 1915, during a gale. Caught in heavy pack ice and unable to manoeuvre, Aurora, with eighteen men aboard, was carried into the open waters of the Ross Sea and Southern Ocean, leaving ten men stranded ashore with meagre provisions.