Gale Probability KMZ File

Pilot charts are certainly of great help for planning ocean routes and fortunately, the U.S. Defense Mapping Agency makes their Atlas of Pilot Charts available for free (get it here. you may find their server somewhat slow and rather try it here). I’ve recently generated kml/kmz files that show the prevailing ocean winds (get more info here). Viewing them with… Continue reading »


Google Maps Distance Calculator

Our map here at Pitufa.at now offers another feature: a distance calculator. It calculates great-circle distances between points or of entire routes. It gives you an easy-to-use GUI to estimate your cruising distances. The great thing is that on our map this feature works together with prevailing wind maps and layers with other pilot chart data. Currently it shows distances only in nautical miles.… Continue reading »