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How SAILS WORK
Selecting appropriate sail
Basic sail design
1 other sections not shown
adjusted aerodynamic airfoil apparent wind batten bias stretch boom boundary layer broadseaming camber camber distribution Chapter chord clew crimp cringle cruising spinnaker curvature deck depth/chord ratio diagram downwash edge effect entry angle excessively extrusion fabric Figure finishing flow fluid flying shape foot forestay forward furling sails furling system genoa girth halyard head headsail headstay sag height horizontal increase induced drag Kevlar laminates layout lead angle leech tension leeward length less lifting force loads luff curve luff sag luff tape mainsail mast maximum depth location Mylar naker nylon outhaul panels patches percent pole polyester pressure racing boats reefing line ring roach roller roller furling sail area sail design sail shape sail trim sailboat sailcloth sailmakers Sailor's Guide sailors seam sheet lead sheeting angle side slab reefing sloops spar spinnaker cloth staysail stitching substrate surface tack technique telltales threadline tion twist upwash upwind vertical warp weave windward wire woven yarns