ABSTRACT
Like the Decca Navigator system, the Loran C is a medium range electronic position fixing system based on hyperbolic principles. In general, the base line and coverage area of a chain is slightly greater than Decca. Most of the chains are operated by the US Government which has indicated its intention to discontinue Loran C transmitting stations, established for military use, that do not serve the North American continent. Chains are now being developed by Saudi Arabia, North West Europe and Japan.
