When properly set and drawing, a fore-and-aft sail shall have which cross-section?

Correct Answer: Option B — One that has more curve at the luff

Fore-and-aft sails require an airfoil cross-section with maximum draft or curvature located forward, near the luff. This design generates optimal aerodynamic lift and laminar flow, enhancing vessel performance and pointing ability when sailing close-hauled against apparent wind vectors.