This podcast explores the maritime application of the Magnus effect, a physics phenomenon where spinning cylinders generate thrust to propel vessels. Modern ships, specifically those chartered by Airbus to transport aircraft components, now utilise Norsepower Rotor Sails to harness wind energy. These towering mechanical structures function as high-tech sails that reduce reliance on traditional engines, significantly cutting fuel consumption and carbon emissions. Beyond new builds, these systems are frequently retrofitted onto existing fleets to improve efficiency through advanced automated controls. This integration of nineteenth-century physics with contemporary engineering represents a pivotal shift toward sustainable shipping and long-term decarbonisation in the maritime industry.