Demonstration  file This page provides a demonstration of how electronic chart tracks can be viewed in Google Earth. The link     below should open in Google Earth if you have it installed. Google Earth can import tracks in almost any format except Nobeltec’s ONF files (I think the very latest version of Nobeltec can export GPX). I can provide advice and a small file utility which can convert ONF files to GPX.  Maradon Cruise September 2006 cruise to Southern California in the 40' ketch Maradon