Show i Direction Finder at Sea The direction finder used at sea is an instrument for or receiving sig nals from rom various land stations and lightshIps Each station has its dis- dis distinctive distinctive call The man operating the tinder finder aboard a ship turns his dial until he hc has tuned in at its strongest point a certaIn can call After tuning In another station he takes his chart chartand chartand and draws lines from the stations to toi the positions where he receIved the signals The position of the liner is where these two lines cross |