• Mar 27, 2026 Decca Bridgemaster 2 Manual By Hori Arina son of Decca and GPS Accuracy Feature Decca Navigator Bridgemaster 2 GPS Accuracy 01 nautical miles coastal 49 meters typical civilian Signal Source Groundbased radio transmitters Satellites Susceptibility to Interference High atmospheric terrain Relatively low Coverage Area Limited to areas By Hildegard Batz