OCR Text |
Show Sea Collisions Minimized The danger of collisions at sea on foggy nights can now he minimized by a new invention which shows with luminous spots and arrows on a compass-marked screen the location loca-tion nnd direction of every ship within with-in a radius of ten miles. It is a cathode ray device which is operated oper-ated by the radio signals sent out by other ships every twenty seconds. Pilots watching it know, practically by a mere glance at the chart, when and how much to change their courses. Collier's Weekly. |