Laminar Flow
Well-known member
I'm a keen student of naval architecture and take a lively interest in the indigenous craft in every country we visit. The traditional Dutch boats are quite different from any type of craft other regions/countries have developed and, as most other traditional craft, have evolved to meet specific local conditions. That they do rather well. Apart from being able to float on wet grass, they frequently humble much more modern designs, or what the Dutch call "sharp yachts" when sailing head to head.Please do write that article LF!
The most difficult part (I am sure) would be in trying to keep it as an article, rather than allowing it to become an encyclopaedia, as there are just so many interesting boats of all shapes and sizes and types in the Netherlands.
The German sailing magazine "Die Yacht" sponsored a race between an X-yacht and a Lemster. To windward, the difference in tacking angle between the computer optimized modern yacht and the 200 year old traditional, gaff rigged fishing boat design with lee boards was only 1 degree, while the speed through the water was at least equal. The X-yacht did eventually win the race, not due to it's superior speed, but to it's comparative ease of tacking. In conclusion, it was thought that in a point to point race, rather than an olympic course, the Lemster probably would have won.
I've also watched Skutjes racing, these are barges, once used for transporting peat and farm products. Seeing these boats exchange tacks, sparring in the gentle evening breeze off Grouw should dampen anyone's conceit about the supposedly much superior performance of modern design, at least in flat water.
Looking at the lines of traditional Dutch craft, I used to joke that if the Dutch were right, everyone else must be wrong.
The interesting thing about the Sloepen is that they operate around the speed restrictions in the canals which can be as low as 3km/h for the smaller, suburban/urban ones, usually it is 6-9km/h and no more than 12.5 km/h for the larger waterways such as the Princess Margriet, if I remember correctly. In this sense we are predominantly talking about displacement hulls, though some of the more traditional inspirations have planing wedges underwater to let them reach higher speeds where allowed. Most are open dayboats, even the larger ones that may have an enclosed heads at best, though some have a convertible cover that can be enclosed for "glamping". Quite a few of the smaller 18-20' ones have bowthrusters and most have inboard power.