E Navigation and Decca navigation system

Decca navigation system
Was Hyperbolic navigation system
Ship and aircraft used to determine their position
Had dedicated static radio transmitter
Frequency 70-129 khz

E Navigation
Electronic format of transmission, reception, manipulation and display of navigational information.

E Navigation Advantage
Reduce accident incident
Reduce shipping cost
Enhance maritime safety security
Protect people environment
Easy and comfortable

E Navigation Methods
Satellite Navigation GNSS: GPS, Glonass, Galileo
Radio Navigation: LORAN, Decca, Omega
Radar Navigation: Determine position relative to known object