Abstract: A system to control sea navigation or traffic of a plurality of ships or moving bodies is disclosed. The system comprises a radio navigation reference system comprising at least two reference beacon sources and a navigation central station M. Said central station M, the reference beacon sources and the ships or moving bodies are provided with a first intercommunication means from said central station M to each reference beacon source, said first intercommunication means being synchronized by said central station M, and a second intercommunication means from said central station and each reference beacon source to each ship or moving body.