What are the marine emergency signals?
A shipboard radio station includes all the transmitting and receiving equipment installed aboard a ship for communications afloat. Depending on the size, purpose, or destination of a ship, its radio station must meet certain requirements established by law or treaty. For example, large passenger or cargo ships that travel on the open sea are required by the Communications Act and by international agreements to be equipped with a radio station for long distance radio communications. Passenger ships that travel along the coast must be able to communicate at shorter range with coast stations. These are examples of “compulsory ships” because they are required by treaty or statute to be equipped with specified telecommunications equipment. Smaller ships used for recreation (e.g., sailing, diving, fishing, water skiing) are not required to have radio stations installed but they may be so equipped by choice. These ships are known as “voluntary ships” because they are not required by treaty or
