Watch—A division of the crew, also the space of time they are on duty.
Way—A vessel’s progress through the water. To get underway—to set sail, to move off.
Weather—To weather a vessel or object is to pass to windward of it.
Weather side—The side upon which the wind blows.
Weather shore—The weather shore is the shore from off of which the wind blows if viewed from the sea, but it is the shore upon which the wind blows if viewed from the land.
Weigh or way—To way the anchor is to lift it from the bottom.
Wind’s eye—The exact direction from which the wind blows.
Windward—Toward the place from where the wind comes. To go to windward of another vessel is to pass between her and the source of the wind.
Yaw—To swerve from side to side as a vessel does when running free.