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Neptune retractable stabilisers

The Neptune II retractable-fin stabiliser provides optimal vessel performance at low ownership costs.

Improving on board experience for passengers

Retractable fin stabiliser systems play an important role in improving the all-important on board experience for passengers and crew. The one-piece fin is built of fabricated materials, with a modified NACA (North American Committee on Aeronautics) section to maximise lift properties and minimise drag, with a similar effect as flapped fins. Features include an innovative tilt ram attribute, which facilitates cylinder and seal maintenance without dry-docking, simplified crux assembly, improved hydraulic and lubrication systems, lower weight and a new fin extension-locking mechanism for improved safety. Neptune II offers optimal vessel performance with low ownership costs.


Key features

  • Enhanced stabiliser performance due to one-piece, high-lift fin
  • Ease of integration with ship’s alarm and monitoring system
  • Small hull aperture
  • Modular construction
  • Simplified main seal replacement
  • Load sensing hydraulics
  • Latest generation controls

Technical data

Model N200 N300 N400 N500 N600
Max. Fin Area (m2) 5.45 - 7.48 7.00 - 9.62 9.42 - 12.95 12.5 - 17.19 16.24 - 22.33
Weight (t) 44 - 52 67.5 - 78.1 90 - 102.5 127 - 142 190 - 209


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.


    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.