Windward

In nautical terminology, **windward** refers to the direction from which the wind originates, or the side of a vessel directly exposed to the oncoming breeze. It is the exact opposite of leeward, which is the sheltered side facing away from the wind. Distinguishing the windward side is critical for sail trim, crew weight placement (hiking to counteract heel), and determining right-of-way under collision avoidance regulations.

According to Wikipedia's reference on sailing maneuvers, sailing vessels cannot sail directly into the wind and must execute a series of tacks to make progress toward a windward destination. When a sailboat tacks, its bow turns through the wind so that the windward side switches from one edge of the hull to the other. Mastering these essential sailing maneuvers is fundamental for navigating toward any upwind target.

In maritime navigation and COLREG Rule 12, when two sailing vessels receive the wind on the same side, the vessel positioned to windward must keep out of the way of the leeward vessel. Hydrodynamic forces created by types of sailboat keels generate the necessary lift to resist leeway—the lateral drift pushed downwind—allowing modern yachts to track efficiently upwind at angles typically between 35° and 45° off the true wind direction.

Note that windward as a nautical directional orientation should not be confused with geographical proper nouns like the Windward Islands. On board, the windward side constantly changes whenever the boat alters course relative to the wind vector.