👉 Demast, in the context of astronomy and celestial navigation, refers to a type of object that is used as a navigational aid. It consists of two or more objects, usually smaller than a ship's hull, placed in orbit around the Earth at the same altitude. The primary function of demasts is to provide a visual reference for sailors navigating on a course where the stars are visible and the horizon is clear. Demast operations can be used to determine the direction of travel by using the position
