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
San Diego Sails of 1975 to Frank Goldberg, a former co-owner of the successful Denver Nuggets franchise. Goldberg started anew, renaming the team the San Diego Sails for 1975–1976. Goldberg hired former University of Minnesota coach Bill Musselman and, with a completely different roster, color scheme, set of uniforms and just about everything else, sought to repeat Denver's turnaround a season earlier from mediocrity to championship contender. But the Sails attracted only 3,060 fans to their home opener on October 24, 1975 – a loss to the Nuggets – and fan attendance rapidly dwindled further as the team limped to a 3-8 start.