What was the name of Ernest Shackleton’s ice‑crushed ship?

Sir Ernest Shackleton’s ship Endurance was crushed by Antarctic ice in 1915, stranding 28 men. They camped on floes, rowed to Elephant Island, then Shackleton sailed the 22‑foot James Caird 800 miles to South Georgia.
After an overland trek he organised rescue; every crewman survived, an epic now cited as a masterclass in crisis leadership.