TopNav is designed to promote and enhance non-Global Positioning System (GPS) navigation skills by means of a fun competition; the emphasis is now on the fun element (I should know - I'm one of the principal organisers). Even if pilots were taught well in the first place, in an era of ever-better GPS systems, traditional navigation skills are being forgotten through disuse; however; GPS can fail (yes, really!) or be interfered with, so using GPS as part of a traditional technique allows you to avoid proceeding directly to the scene of the infringement...
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