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
Twin Sails Bridge Twin Sails Bridge The Twin Sails Bridge (also known as The Second Harbour Crossing) is a double leaved bascule bridge in Poole, Dorset, England. The bridge provides a second road link from Poole Town Centre to Hamworthy. The intention is that the bridge will allow development of four major sites, two in the town centre and two in Hamworthy, including the old power station, which was closed in 1988. The bridge spans the Backwater Channel which links Holes Bay with Poole Harbour. The bridge and approach roads are connected to the junction of West Quay Road in the East and