Vector fins™ simply re-direct the force direction/force vectors to a direction where more of the force will benefit roll reduction and less will spent on the negative side-effects of yaw and sway that is hurts the boats handling and comfort.
The vertical concave shape of the fin, makes the net force directions, both in cruising and in at anchor situations to be re-directed so that they work more “up/down” instead of just parallel to the hull angle.
But there is more, by changing the net force angle, this also increase the leverage arm around the boats rolling point, further enhancing the roll reduction force benefits. This provides a lot more roll stabilization per fin size, which means that drag, power consumption, internal space occupation as well as load on the mechanical parts is a lot less than with other fins that can give a similar roll reduction.
|Cruising at 11 knots:|
|Max roll movement||10,4º||0,3º||97% 99,8%|
|Average roll movement||5,7º||0,15º||97%99,9%|
|Max roll angle||9,4º||2,6º||72%92%|
|Average roll angle||4,1º||1,4º||66%88%|