Windward and leeward

The word "lee", which means a place without wind, comes from the Old Norse "hle" for "cover" and has been used in marine navigation in Germany since medieval times.

[4] In naval warfare during the Age of Sail, a vessel always sought to use the wind to its advantage, maneuvering if possible to attack from windward.

This was particularly important for less maneuverable square-rigged warships, which had limited ability to sail upwind, and sought to "hold the weather gage" entering battle.

Ships heel away from the wind, so the leeward vessel would expose more of her topsides to shot, in extreme cases even part of her bottom.

The windward side of an island is subject to the prevailing wind, and is thus the wetter (see orographic precipitation).

Diagram showing definitions of windward (upwind) and leeward (downwind)