Forces on sails apart, which generally prevents heeling. Each sailing craft is a system that mobilizes wind force through its sails—supported by spars and rigging—which provide motive power and reactive force from the underbody of a sailboat—including the keel, centerboard, rudder or other underwater foils—or the running gear of an ice boat or land craft, which allows it to be kept on a course. Without the ability to mobilize reactive forces in directions different from the wind direction, a craft would simply be adrift before the wind. Accordingly, motive and heeling forces on sailing craft are either "components of" or "reactions to" the
Scarlet Sails (tradition) united to celebrate the end of the school year in connection with the symbolism of the popular 1922 children's book "Scarlet Sails" by Alexander Grin. During the first celebration, a boat with scarlet sails sailed along the English Embankment and the Admiralty Embankment towards the Winter Palace. Although it was designed to update the rusty revolutionary propaganda, the "Scarlet Sails" tradition eventually evolved into a massive demonstration of freedom from "schools and rules" and has become the most popular public event annually celebrating the end of school year. Crowds of about one million people are treated to a wide variety