👉 In the context of maritime navigation, foghorns are a type of signal that is used to alert ships and other vessels of approaching fog or darkness. They are typically mounted on a mast or tower and are lit by a lamp or other light source. When a ship or vessel encounters fog, it may not be able to see its own position or the position of other ships. This can make it difficult for the ship to navigate safely through the fog. Foghorns are used as a warning signal