EXPERTS have discovered the real reasons Ernest Shackleton's ship sank on its ill-fated Antarctic expedition in 1915.

And it suggests the famed polar explorer may have known the Endurance ship wasn't up to the job all along.

Endurance was sailing for the Antarctic in 1914-15 but became trapped in ice forcing the crew to abandon ship.

It eventually sank and lies 3,000m below the Weddell Sea, located in the Southern Ocean, east of the Antarctic Peninsula.

Miraculously, all 27 men onboard the ship survived after travelling hundreds of miles over ice, land, death-defying mountains and sea.

But a new bombshell study has revealed new details about why the ship was doomed.

Experts have carried out technical analysis and researched some of Shackleton's diaries to shed new light on the ex

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