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
Black Hands, White Sails: The Story of African-American Whalers it "A well-researched and detailed book " "Black Hands, White Sails" has also been reviewed by "The ALAN Review", "Kirkus Reviews", "The Horn Book Magazine". and "Voice of Youth Advocates", Black Hands, White Sails: The Story of African-American Whalers Black Hands, White Sails: The Story of African-American Whalers is a 1999 book by Patricia McKissack and Frederick McKissack about the involvement of African-Americans in the history of whaling in the United States. "BookList", in its review of "Black Hands, White Sails", called it a "fascinating look at the convergent histories of whaling and the abolitionist movement" and concluded "Less-skilled readers