A genoa sail is a type of large jib or staysail that extends past the mast and so overlaps the main sail when viewed from the side, sometimes eliminating it. It was originally called an "overlapping j
Genoa: 2 – Reinforcement 5 – Anti-UV covering 6 – Head foil attachment 7 – Panel(s) 8 – Telltales 9 – Reinforcement 11 – Leech line 13 – Foot control 15 – Furling marks Edges: 3 – Luff 4 – Leech 14 – Foot Corners: 1 – Head 10 – Tack 12 – Clew