Would it have been possible to sail a small boat from [The Wash, Norfolk, UK](https://www.google.co.uk/maps/place/The+Wash+National+Nature+Reserve/@52.9920189,0.0938593,10z/data=!4m5!3m4!1s0x0:0xbb9ec420d4add213!8m2!3d52.8235124!4d0.2835846?shorturl=1) to Dunkirk in WWII? Could it be done in one go? If not, where would you stop en route?

[![enter image description here][1]][1]


  [1]: https://i.sstatic.net/eXZOJ.jpg