SPS50E DC Electric Stabilizer Actuator

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The SPS50E actuator is the powerhouse behind Sleipner’s Vector Fins™ on mid-size yachts in the 14–21 meter range. Combining unmatched compactness with energy efficiency, it is easy to install and seamlessly integrates with yacht systems. The SPS50E controls fin movement precisely, minimizing roll and enhancing onboard comfort.

Powered by 24V or 48V DC, it continuously adapts fin positioning in real-time, ensuring optimal stabilization for mid-size yachts seeking powerful performance with minimal space requirements.

SKU: SPS50E-24/48V Categories: ,

Product Description

ANY SPEED

Vector Fins™ is the only top-performing stabilizer system for both cruising and at anchor use. The fins’ concave shape creates multilateral force direction improving the stationary positioning of a vessel while at anchor. The uniqueness of the design also becomes evident while underway as it improves in effectiveness as speed increases. Sea trials have proven that Vector Fins™ are up to 50% more efficient at anchor and capable of reducing the uncomfortable rolling motions of the vessel by up to 95% while cruising.

360° INSTALLATION

Designed to fit in small and challenging installation areas, the Vector Fins™ unique cone shaft design allows you to utilize the space onboard to install the actuators in any direction and insert the fins into the position you require.

Category Feature / Specification Value
Power Power Supply 24V DC, 48V DC
Recommended Fuse 24V: 100A / 48V: 50A
Protection IP Rating IP67
Performance Peak Power per Actuator 3.6 kW
Weight Net Weight 102kg / 224lbs
Integration Typical Vessel Size (4-fin) 18-26m / 59-85ft
Typical Vessel Size 16-21m / 52-68ft
Typical Vessel Class Motor boat, Commercial vessel
Dimensions (a) 15.8″
(b) 226mm / 8in
(c) 171mm / 6in
(d) 55″
(e) 310mm / 12in
(f) 361mm / 14in
(g) 471mm / 18in
Features 360° Installation Yes
Any Speed Yes
Patented Noise Reduction Yes
Industry Leading Efficiency Yes
Plug and Play Signal Cables Yes
4-fin Configuration Available Yes
Dynamic Position Mode Yes
Eco Mode Yes
Dock Mode Yes
On Water Service Possible Yes
Instant On Yes
Coordinated Turn Control Yes

Typical average power consumption
At anchor complete system (both actuators together)

Fin Model Roll Time (s) Max (100% effort) kW Med/Big (66% effort) kW Small/Med (33% effort) kW
V4-8HS 3.0 1.54 0.70 0.18
3.5 1.33 0.72 0.18
4.0 1.17 0.68 0.18
4.5 1.08 0.62 0.18
5.0 0.95 0.55 0.19
5.5 0.86 0.50 0.18
6.0 0.80 0.46 0.19
V4-12 3.0 1.69 0.71 0.18
3.5 1.67 0.73 0.18
4.0 1.52 0.76 0.18
4.5 1.39 0.76 0.18
5.0 1.23 0.69 0.18
5.5 1.13 0.64 0.18
6.0 1.04 0.58 0.19

Peak power per actuator: 3,6kW
Notice:
This depends on many factors, including the boat’s roll period, the size of the stabilizer system for the boat, and the sea state.
When designing the power supply system, it must be able to deliver enough power for both the stabilizer system and any other connected equipment that will be operating at the same time at their maximum power draw.

Additionally, the system must handle rapid power changes from the stabilizers, which go from zero to full power twice during each roll cycle of the boat.

Once the total peak power demand is known, use the boat’s roll period and choose a typical operating scenario (e.g. large waves, medium waves, or calm conditions). Typically, small to medium waves are the most common conditions to anchor comfortably in. Then decide how long the system should run from the battery bank without running a generator.

This information allows the power system supplier to calculate the required battery capacity (in amp-hours), battery technology and charging capacity. A safety margin should be included to account for battery aging and reduced performance over time.

Note that the above listed values is for a specific sea state scenario running both actuators constantly at the stated load. Actual consumption will change according to the change in sea state such as wave height, length and frequency. These values are therefore to be considered as guidelines only.