👉 Sentinelling is a practice of using artificial signals, such as beacons or lighthouse lights, to guide ships and other vessels in a direction they should take. The purpose of this technique is to prevent collisions with ships or other objects, which can result in significant damage and loss of life. In terms of its historical significance, sentinelling was first introduced by the Aztecs in the 15th century as a way to warn against potential pirate attacks on their coastlines. The
