Mystery solved: Australia's first submarine sunk in 1914 by open valve

Experts unsure if human error or mechanical failure caused AE1 to sink off Papua New Guinea during first world war

Investigators believe they have solved the 104-year-old mystery of what sank Australia’s first submarine and sent 35 sailors to a watery grave off Papua New Guinea.

Experts who analysed the wreck believe HMAS AE1 sank after a ventilation valve in the hull was left partially open when the sub dived.

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from The Guardian https://ift.tt/2CWaltI
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