I’ve been navigating since I was 12 when I joined Air Cadets. This was before GPS really kicked off, and paper map and compass was the only tool you were given on a long hike and if you wanted to get supplies you made sure you were at the correct coordinates on time. GPS then came along and I got lazy. Especially now with products like Viewranger and JuicePackAir I’m ready to navigate all the time i’ve go my iPhone to hand.
The book starts with a refresh of how GPS works, contours, bearings and compass work. The contour section goes to real efforts to help those who may never have come across them before using 3D mapping to demonstrate. The book then goes into great details on the use of GPS to compliment map reading.
GPSs are little computers, and there are occasions when they can fail. Chapter 6 looks at the steps you need to consider should this happen, whether you have to reboot the unit, replace the batteries or resort to traditional navigation skills (the latter are covered in Chapter 3, which also looks at how your GPS can be used to replicate these methods).
The final two chapters introduce digital mapping and look at how these can be used to enhance your developing GPS skills, and how to keep these new-found skills honed.
This is not a ‘quick-read-and-become-an-expert’ book. Take your time to try the exercises practically and develop your skills and you’ll emerge a confident and effective GPS navigator.
First things first: let’s get to grips with what your GPS is telling you.