The tracking of Zeppelins has become quite sophisticated now. A central operations room has been established at the Admiralty to coordinate the messages coming in from the British wireless interception stations and those going out to the eight Warning Controls (the country was divided into areas for the purpose of warning of an attack).
When Zeppelins approached within 150 miles of the English Coast their position, course, and speed were communicated at once, by telephone from the Admiralty, direct to one or more of the East Coast flying-boat bases.
The commanding officers at each base then had the discretion to launch one or more flying-boats. The subsequent positions of the airship or airships were passed on, as they were plotted to the air stations, and then relayed by wireless to the flying-boats already in the air. The receipt of continuous information also enabled commanding officers to judge the need for sending up additional aircraft.
Today an additional innovation was added in a special squared chart of the southern part of the North Sea, known as Tracing Z. This enabled the positions of Zeppelins to be communicated by code signals based on the chart.