To travel by boat from northern Europe through the rivers and canals and finishing at the Mediterranean, is an easy and uncomplicated journey. The only obstacles on the way are the locks, but once you have mastered how to navigate the different types of locks, it is quite simple. You can even manage the locks if you are sailing single-handedly. Always keep control of your mooring lines and the forces that affect your boat and you will experience that even the more complicated locks can be straightforward. However, if you lose control of the boat or the moorings, the situation can be very...