The latest version of Rolls-Royce stabilisation systems gives ice class ships the ability to benefit from the company’s Stabilisation-at-Rest (SAR) concept. This system delivers higher levels of roll reduction when the vessel is at rest, and it also maintains stabilisation performance while underway.
The SAR system is incorporated to both the Aquarius and Neptune ranges of Rolls-Royce retractable stabilisers. It uses active fin control technology and advanced hydrodynamic design to deliver higher levels of roll reduction when the vessel is at rest and maintain stabilisation performance whilst underway.
In the new design, the stabiliser fins can be fully retracted into the custom-designed fin box, so there are no bumps from the hull form, making sure that the ship navigates safely through ice.
The new design has a reduced fin area and better lower fin angle which comply with the stabilisation performance requirements. The new design also reduces dynamic drag when deployed underway which leads to lower fuel costs. The stabiliser fin also employs the trailing edge design which limits vibration and noise.
Martin Cunningham, Managing Director, Rolls-Royce Motion Control Dunfermline, noted:
Both initial and operational costs are minimised due to the units being easily installed, the fin box custom-designed to exactly match the ship’s hull profile, small hull opening and a simple reliable design.
Finally, a special quad seal arrangement ensures minimal risk of leakage, while the machinery is fully compatible with a wide range of EALs (environmentally acceptable lubricants).