What refers to a vessel that is downwind of another vessel?

A vessel that is downwind of another is referred to as a leeward vessel. This terminology comes from sailing and meteorological concepts, where "leeward" describes the direction away from the wind. When one vessel is positioned downwind of another, it is in a position where the wind is blowing toward it from the other vessel, making it the leeward boat. This position is significant in navigation and sailing since wind dynamics can affect both speed and maneuverability.

The other terms, such as windward vessel, relate to the vessel that is upwind; the stand-on vessel typically refers to a boat that has the right of way in a crossing situation; and the give way vessel is the one that must yield to the other. Understanding these terms is crucial for safe navigation and ensuring proper right of way in boating scenarios.