Vector Fins™

Side-Power vector fins Dame design award winners 2013


Introducing a
revolutionary generation of fin stabilizers 


Fin stabilizers is the only system that handle well both cruising and «at anchor» use, with the «at anchor» stabilization force deciding the size of the fins.  Larger fins provide more stabilization force, but also create more drag which equals higher fuel consumption, especially at higher speeds, an important point for most boat owners. Larger fins also means that the internal components grow in size, making it difficult to install them in an optimal position which in turn can result in the stabilizers having negative side-effects like causing yaw (steering effects) and sway (side-way movements). Thereby, the overall situation often results in a compromise in fin size, so that most fast boats today do NOT have as much stabilization as most boat owners really want.


Vector fins™ - a simple solution to a complex problem!


The vector fins™ stabilizers (Patent pending PCT/NO2013/050067) improve the roll reduction efficiency by some 50% in “at anchor” and 30%  in cruising situations, while at the same time reducing undesired yaw and sway motions caused by active fins dramatically.

The huge benefits both in efficiency and reduced side-effects makes them particularly ideal for today’s modern, fast cruisers where normal fin stabilizers  have typically not been able to satisfy the desired roll reduction without causing too much side-effects.  This is particularly true for light-weight cruisers below 20 meters, which also due to their shorter roll time periods are particularly difficult to stabilize, especially in the for stabilization light-weight  come out for boats between 15 and 22 meters, as their unique advantages is really what will allow fins to be the perfect solution also for smaller, fast boats, where there is no good overall solutions today for both cruising and at anchor stabilization due to their light weight and shorter roll time. 


How can Vector finsTM be so much better?


Side-Power Vector fins - stabilizer revolution

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 be 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.


Vector finsTM  features:

Side-Power Vector fins logo
  • Up to 50% more efficient*
  • Up to 55% less side effects**
  • Fin design acheived with advanced hydrodynamic software.
  • 20% - 50% less resistance than other fins.
  • All fins are prepared for “Any Speed” function – 2:1 size ratio.
  • The fins are made in “one shot” in vacuum injected vinylester over pre-shaped core material – with specially designed rowing and math layers. Most others are made in two halves and glued together.


Verified test results - Princess 56 with 0,6m2 vector fins:
 

Reduction of
No Stabilizer: Vector Fins: Roll: Seasickness:
Cruising at 11 knots:
Max roll movement

10,4º 

0,3º

97% 99,8%
Average roll movement

5,7º

0,15º

97% 99,8%
At anchor:
Max roll angle

9,4º 

2,6º

72% 92%
Average roll angle

4,1º

1,4º

66% 88%

Princess 56 with Side-Power Vector Fin stabilizers



Available Vector Fins™ sizes and measurements:
 Vector fin stabilizers measurements illustration

Vector fin: VF650 VF800 VF1050 VF1350 VF1650
Size (m2): 0,65 0,80 1,05 1,35 1,65
A (mm): 1271 1395 1618 1835 2081
B (mm): 661 733 847 956,5 1054,1
C (mm): 413 457 525 595,2 680,7
For actuator: SPS55 SPS55 SPS66 SPS92 SPS93
Fins have zero weight in water


Notes:
*) 20-30% in cruising/40-50% at anchor with same size, same inside space requirements and same power consumption. 

**) 30-35% in cruising/45-55% at anchor with the same stabilization force and same power consumption.

US Patent US9527556 - Patent pending PCT/NO2013/050067


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