Indonesia's sunken submarine may have been hit by a powerful force known as an internal wave

Indonesia's sunken submarine may have been hit by a powerful force known as an internal wave
By Indonesia correspondent Anne Barker
Video: Indonesia mourns sunken submarine crew (Reuters)
As an Indonesian navy submarine crewed by 53 men glided below the surface of the Bali Sea during a routine training exercise, it may have been hit by an invisible but powerful force that dragged them to the deep.
The vessel sank to a depth of 838 metres, far beyond the reach of rescuers.
As the personal effects of crew members floated up and the oxygen supply on board slowly dwindled, officials said there was no chance anyone survived.

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