Wind triangle
The wind experienced by a fixed observer (true wind) is not the same wind an observer on a moving yacht will feel (apparent wind). The wind triangle h…
Wind
Points of sail
The points of sail refer to the course a boat is sailing in relation to the wind. They are defined in reference to the wind angle, which is the angle …
The air-water interface
Water and air are two different fluids that enter into contact at the ocean's surface at what is called the air-water interface. This interface plays …
Surface waves
Surface waves are created by disturbance forces applied to a specific area. It can be either the wind, a surface vessel moving through the water, an e…