 It was possible to cross the Atlantic with an error of a couple of miles when in range of a couple of VORs or NDBs.Its major shortcoming in practice was the sea state, as a calm sea gave poor radar returns and hence unreliable Doppler measurements.But this was infrequent on the North Atlantic

Location-based Doppler techniques were also used in the U.S. Navy's historical Transit satellite navigation system, with satellite transmitters and ground-based receivers, and are currently used in the civilian Argos system, which uses satellite receivers and ground-based transmitters.