We stopped at English Channel during our trip around the World. But one group was in France and second group was in Great Britain. Jirka, as great sportsman, jumped into waves in Dover at 8:00 and swam 0,75 kilometers per hour to France, supported by Jan and Petr. Motorboat driven by Bara started at 8:30 from Calais and run 25 km per hour. When and how far from Dover Bara met Jirka?