Before we start talking about GIS and technical aspects, let's talk about the Vendée Globe.
It is a solo sailing race, non-stop and without assistance, around the world. It has been held every 4 years since 1989. The start is in Les Sables d'Olonne. The course consists of going down the Atlantic, then passing successively under Africa and the Cape of Good Hope, under Australia and Cape Leeuwin and finally under South America and Cape Horn, to return to Vendée as quickly as possible. The record was set by Armel Le Cléac'h during the 2016-2017 edition with a journey of 74 days 3 hours and 35 minutes.