A private sub for Captain Nemos – and four more aquatic gadgets

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Roula Khalaf, Editor of the FT, selects her favourite stories in this weekly newsletter.

Poetry in ocean

Twenty years ago, Dutch entrepreneur Bert Houtman decided that he wanted to kit out his yacht with a submarine. Fulfilling this wish would seem relatively straightforward for someone with sufficient funds, but he discovered that subs were verging on impossible to buy. Most people would…