Stabilisation At Rest (SAR) Ice Class

Using retractable fins for Ice Class vessels. The fin fully retracts into the fin box when not in use using an innovative five sided swept fin design.

This design of stabilisers builds on the success of the Stabilisation At Rest design introduced in 2006 for the Aquarius range and subsequent implementation for the Neptune range. This fin stabiliser allows Ice Class and Polar Class vessels to be fitted with Stabilisation at Rest. This new design, when fully housed into the customised fin box, results in no protrusions from the hull frm and gives the operator peace of mind and allows safe navigation through ice waters.

The new reduced fin area and optimised lower fin angle, whilst meeting the performance requirements, results in reduced dynamic drag when deployed underway leading to lower fuel costs. The stabiliser fin also incorporates the tested optimised trailing edge designed to eliminate vibration and noise.

With the environment in mind, the stabiliser machinery is fully compatible with an extensive list of EAL’s that are available worldwide and incorporate a quad seal arrangement for additional integrity of sealing.

Roll reduction

Subject to vessel parameters, and wave height/period

Key features


  • Fully retracts into the fin box when not in use using an innovative five sided swept fin design
  • Suitable for Polar Class vessels
  • Uses proven Aquarius and Neptune retractable stabilisers, with low through life costs
  • Simple no maintenance fin profile, reducing through life cost to owner


  • Simplified crux design and compact length
  • Vertical linkage for fin tilt
  • Composite fin shaft bearing
  • Quad seal arrangement
  • Small hull opening
  • Compatible with EAL oil, and suitable for VGP Permit type vessels


  • One piece construction
  • Proven anti vortex shedding trailing edge feature
  • Shape improves zero speed performance as more chord is behind the centre line of the fin, using less fin area


  • Complete assembled unit including all components for ease of installation
  • Low noise and vibration

Key dimensions

                                                                Sizes (metres)
Model Fin area M² A B min C D E min F G min H J K Approx weight/
ship set (tonnes)
50 5.8 3.34 2.05 0.85 1.69 5.3 2.2 5.54 0.4 4.47 0.68 25
100 8.1 3.99 2.34 1.2 2.1 6.4 2.7 6.85 0.56 5.35 0.85 43
200 10.9 4.8 2.65 1.43 2.28 7.3 2.4 7.82 0.62 6.3 1.03 51
300 13.2 5.14 2.96 1.62 2.58 7.78 2.8 8.42 0.7 6.84 1.18 78

Aquarius stabilisation at rest 50 & 100


Neptune stabilisation at rest 200 & 300



Services and support

  • 24/7 Technical support

    Our 24/7 technical support team is there to help at any time, day or night, wherever your vessel is.

  • Conversions, retrofit and refit

    We understand the importance of having the right parts, available in the right place, at the right time.

  • Training

    Ensure that your crew is properly and thoroughly trained. This will reduce operational risk, downtime and maximise return on asset investment.