Labels:text | boat | transport | ship | cartoon | drawing | watercraft | sailing OCR: SAILBOAT CAILBOATS and windsurfers can use the .HEELING wind to propel them in any direction. FORCE This versatility is achieved by shifting a triangular sail around the mast to catch the wind at various angles. The boat MAST shown here is sailing across the wind. The sail produces both a forward WIND thrust and a heeling force, which DIRECTION tilts the boat to one side. . ... ... . SAIL Sailing Before the Wind FORWARD THRUST HULLW SEE RUDDER CENTERBOARD ALSO Sailing Into the Wind