Link-ZA or UHF radio or satellite link. It uses TDMA and CSMA to establish links and share data with up to 31 active nodes and an unlimited number of passive nodes. Static or dynamic routing tables are supported. Link-ZA node controllers have store and forward capability to transfer data between different radio nets. A node controller can access multiple radios and automatically select the most appropriate link. Link-ZA Link-ZA (also "Link ZA" or "LinkZA") is a tactical data link system used by the South African National Defence Force. It is the data communication component of the "Combat Net Interoperability Standard" (CNIS).
Ship registration Ship registration Ship registration is the process by which a ship is documented and given the nationality of the country to which the ship has been documented. The nationality allows a ship to travel internationally as it is proof of ownership of the vessel. International law requires that every merchant ship be registered in a country, called its flag state. A ship is subject to the law of its flag state. It is usual to say that the ship sails under the flag of the country of registration. A ship's flag state exercises regulatory control over the vessel and is