It will be appreciated that in any hyperbolic navigation system, there are potentially two points on the earth's surface at which the same readings are obtained. Since the operator of the plotter obviously knows
Notice also that the plot is just a series of steps. If you wanted to waste the space, you could write it out as a numbered list. Or a bulleted list. I don’t so I wrote it as a paragraph. The items on the list are what we call the plot points. It’s really just one big ...