An Electrical Signaling Method for Guiding Aerial and Marine Craft

Inability to guide vessels accurately results in large losses of life and property. An arrangement by which vessels may be guided accurately will have a value corresponding to what it saves. A signal-carrying conductor along the course of a vessel, and means capable of indicating the proximity and direction of the signal conductor are described and discussed, including various forms and combinations. Ocean-going vessels entering harbors are chiefly considered, the same principle being applicable to other craft and channels, air ships, and so on. Experimental tests of the system are described in detail, with numerical data; and suggestions are made as to how the system may be further developed and applied.