Born in 1874 in Ireland, Shackleton

Ernest Shackleton displayed the finest crisis leadership in the history of exploration. Born on 15 February 1874 in Kilkea, Ireland, he moved to England as a child and joined the merchant navy at sixteen, sailing to South America, East Asia, and Africa. His charisma attracted loyalty wherever he served.

In 1901 he joined Scott's Discovery expedition as third officer, reaching a new southernmost record of 82 degrees. Scurvy forced his early return, and Scott regarded it as weakness. The experience ignited Shackleton's polar ambition and severed his ties with Scott.

In 1907 he led his own Nimrod expedition toward the South Pole. He turned back at 88 degrees 23 minutes, just 180 kilometres short, when food ran dangerously low. The decision to retreat rather than risk lives earned him a knighthood and national acclaim.

In 1914 he launched the Imperial Trans-Antarctic Expedition aboard Endurance. The ship became trapped in Weddell Sea pack ice and, after ten months of drift, was crushed and sank. The 28-man crew camped on the ice for months, surviving on seal and penguin meat, before reaching Elephant Island by lifeboat.

Shackleton then led five men on an 800-mile open-boat voyage to South Georgia across the stormiest ocean on earth. After landing on the wrong side of the island, they crossed its uncharted mountain range in a 36-hour forced march to reach a whaling station. He organized a rescue ship and recovered every man from Elephant Island. Not one life was lost.

After the war, Shackleton attempted a fourth Antarctic voyage but died of a heart attack at South Georgia on 5 January 1922, aged 47. His leadership redefined success in exploration: not the destination reached, but every person brought home.