Kanmon Strait is a strait in Japan that connects the cities of Shimonoseki and Kitakyushu. It is a major sea lane for ferries and cargo ships, with an average of 1,000 vessels passing through it each day. The safety of navigation in this strait is ensured by "buoys".
Buoys are a type of navigation aid that floats on the surface of the water and guides ships to their destination. Buoys are managed by the Japan Coast Guard and are regularly inspected and maintained. Inspections include checking the location and condition of the buoys, as well as checking for damage caused by contact with ships.
Buoys are essential for ensuring the safety of navigation at sea. The things we use in our daily lives, without even thinking about it, are delivered to us thanks to the safety of navigation at sea.