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Unlucky Thirteen

K13 was carrying out her final acceptance trials prior to the Admiralty officially taking her over from her Clydeside builders. She had already covered the measured mile at a record 23 knots to gain the honour of the world's fastest submarine and there was a festive air about the pre-diving lunch which continued to 3:15 pm. And as she glided slowly down to the diving area in Gareloch she was carrying not only her regular crew of 53 officers and men but also 14 directors and employees of Fairfield, 13 other civilians, and two Royal Navy submarine officers acting as observers. When she arrived at the loch she picked up two more civilian experts. She dived smoothly enough but to Lt-Cdr Herbert's consternation she refused to trim level at 20 feet and continued plunging toward the bottom.

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