The term 'Go Temporarily Off Course' can be summarized by the three-letter word 'YAW'. YAW is a nautical term used to describe the movement of a ship or aircraft when it turns around its vertical axis. It is the opposite of pitch, which is the movement of a ship or aircraft when it turns around its horizontal axis. Yawing is an important maneuver for ships and aircrafts to make in order to change direction or avoid obstacles.