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
MESO-SAILS noted. MESO-SAILS was thus deployed with Build 14 update in the Spring of 2014 and is still in operations when needed. The operator can choose between 1, 2, or 3 supplemental low-level scans with MESO-SAILS active. A study published in 2016 looked at how the MESO-SAILS radar scanning regime performed with respect to tornado debris signature (TDS) detection during the 2016 tornado season in the Iowa Region, compared to the distribution before its implementation. When tornado watches were active, MESO-SAILS was active 100% reflecting the National Weather Service expectations for such situations. Overall, it was found that the use of