How long would it take to sail from France to London?

Sailing from France to London typically takes around 4 to 8 hours, depending on the departure point in France, the type of boat, and weather conditions. For example, a crossing from Calais to Dover is about 21 nautical miles and can be completed relatively quickly. However, if sailing from further south, like from Cherbourg, the journey may take longer. Always consider factors like tides and wind, which can significantly affect travel time.