➡ land beside or near to the sea or ocean

➡ a piece of fabric, usually hung from a pole, to indicate a nationality of a vessel.

➡ to be registered to a specific country(the flag state) and use their flag while sailing.

➡ the salt water that covers most of the earth's surface and surrounds its continents and islands

➡ a large boat that carries people or goods across the seas or oceans