A sailing ship is a type of watercraft utilizing wind energy captured by sails for propulsion. This technology operates by converting aerodynamic forces from the wind into forward motion, requiring the careful design of the hull and rigging to optimize efficiency. The effectiveness of the vessel depends on the interplay between hydrodynamics, which governs the interaction between the hull and water, and aerodynamics, which dictates how the sails capture and redirect wind power. Such vessels represent an early and highly developed application of energy harnessing, allowing for long-distance maritime transport across oceans before the widespread use of mechanical engines.