Genoa sail

A genoa sail (often simply called a genoa) is a large headsail whose clew extends aft past the mast, overlapping the mainsail. According to Wikipedia, this overlapping headsail increases a vessel's sail area and speed in light to moderate winds. Geometrically, a genoa is distinguished from a working jib by its Luff Perpendicular (LP) measurement: while a working jib has an LP of 100% or less relative to the foretriangle base (J), a genoa typically ranges from 130% to 150% LP (commonly categorized as a Genoa #1 at ~150% or Genoa #2 at ~135%).

Nautical terminology distinguishes the genoa sail from the port city of Genoa in Italy, as well as from the "genoa car" (or lead car), which slides along the deck track to adjust the sheet angle.

On the water, trimming a genoa requires precision. During basic maneuvers like tacking, the overlapping canvas must clear the mast and shrouds before being hauled in on the new leeward side. Managing the heavy sheet loads requires efficient yacht rope handling with winches and blocks. In winds exceeding 15–18 knots, sailors roll up (furl) or replace the genoa with a smaller working jib to maintain vessel stability and control.