Sailing...
Is comprises wind propulsion of a craft by means of sails or other
airfoils and steering it over water, ice or land, depending on the type
of craft. A sailor manages the force of the wind on the sails by
adjusting their angle with respect to the moving sailing craft and
sometimes by adjusting the sail area. The force transmitted from the
sails is resisted by forces from the hull, keel, and rudder of a sailing
craft, by forces from skate runners for an iceboat, and by forces from
wheels for a land sailing craft to allow steering a course on a point of
sail with respect to the true wind.
While there are still some places in the world where sail-powered
passenger, fishing and trading vessels are used, these craft have
become rarer as internal combustion engines have become
economically viable in even the poorest and most remote areas. In
most countries sailing is enjoyed as a recreational activity or as a
sport. Recreational sailing or yachting can be divided into racing and
cruising. Cruising can include extended offshore and ocean-crossing
trips, coastal sailing within sight of land, and daysailing.