Answer: lorans

AnswerCrossword Clue
LORANSNavigational systems
LORANSShip navigation systems
LORANSNavigation systems
LORANSNavigational aids.
LORANSNavigation aids
LORANSRadio navigation systems
loranssystem of long-range navigation whereby the latitude and longitude of a ship or airplane are determined from the time displacement between radio signals from two or more fixed transmitters
loransLORAN, a type of navigational system