An age of greener, more efficient shipping may be in the offing as a specially modified 43,000-tonne bulk freighter completes a six-month sea trial using a combination of diesel engines and a set of high-tech automatic sails to catch the wind.
  • Jake FarmEnglish
    2·
    2 年前

    I mean sails form an aerofoil but these are ridged aerofoils.