Monday 3 February 2020

Skeg or rudder?

I made a few trips with the Skarabee. I have already praised it's maneuverability which makes the long boat feel a lot shorter. However, this is without using the skeg. When you lower the skeg a bit, the boat feels completely different: it does not want to turn anymore, even on edge. Of course this is explainable as the skeg prevents the tail to slip sidewards and the skeg remains under water on edge. This is actually the purpose of a skeg, so it is not a failure but a design feature. But it is a pity to sacrify so much maneuverabililty when using it. With the Baidarka I never experienced such a difference. But with the Skarabee there is a huge difference in maneuverablility. I am now trying to remember how this was with the Orion, it should be about the same as this is also an easy to turn boat. But somehow it didn't bother me at the time.

That makes me wonder how to use the skeg in a surf: normally you put down the skeg when going downwind. It prevents the boat to break out and that is a good thing if you want to make long surfs. However, when it starts to break out it will be hard to correct because of the same skeg. On the other hand, when you don't use the skeg in a surf the boat definitely want to break out earlier but it would be easier to correct. May be because of the good maneuverability of the Skarabee this could work. Definitely more fun also. Something to test the coming months when there are enough waves to surf.

Now I realize the real benefit of a rudder: with a rudder you always keep maximum maneuverability. Especially in a surf this would be perfect. And it makes me think there are two types of sea kayaks: 'skeg boats' and 'rudder boats'. The Baidarka is a good example of a typical 'skeg boat': the vario skeg just varies the built in 'skeg' in the already well tracking hull. You use the skeg to fine tune the balance of the boat. There is not much difference in maneuverability with or without skeg (both are bad).

On the other hand a typical 'rudder boat' would be much more maneuverable. A skeg would spoil this, so a rudder is the better option. Because of the rudder it is not needed anymore to make the hull track well and it can be optimized for speed and/or maneuverability. Such a boat is the Tiderace Pace 17 Tour. One of the kayaks on my wish list...

May be the Skarabee would be also a good candidate for a rudder. At least, it is an option if you order a new one at MSC. Another thing to think about because a rudder has also some drawbacks.




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