[Boasun]

Just to add to this: They are now coming out with Loran/GPS combined units for Navigation that connects to your chart plotter.
Loran C is being upgraded to eLoran, going from the old tube transmitters to solid state transmitters.
The Aeronautical industry along with the Maritime industry had a big input into keeping the Loran going. A lot of aircraft has Loran for their navigation also.