Folding fin anti-roll stabilizers (SAFIR)
- 78 ships equipped including 15 with the new ALPHA FIN profile
- Three are so large that 2 pairs of fins are necessary
- Fin area ranges from 2.5 to 24 m2
Non-folding fin anti-roll stabilizers (SAFARI)
- 33 ships equipped
- Fin area ranges from 0.5 to 16.5 m2
Active tank anti-roll stabilizers (SARA)
- 47 ships equipped, mainly minehunters, because these vessels require stabilization even when stopped
For more information about stabilizers
Different stabilizers have various features and scopes of application that determine whether they are suitable for a particular ship based on the vessel's speed, displacement and metacentric radius.
Folding fin anti-roll stabilizers (SAFIR) or non-folding fin anti-roll stabilizers (SAFARI) use the thrust normally generated on a hydrodynamic fin moving through the water at high speed. The skew of the fin is controlled to create a stabilizing torque to balance out the torque of the swell. To increase fin thrust, theoretical studies and wet dock tests have been performed to define a new, exclusive fin profile called the ALPHA FIN that significantly improves stabilizer performance and reduces operating and maintenance costs.
Active tank anti-roll stabilizers (SARA) use the torque created by the displacement caused by a volume of liquid inside a saddle tank on the ship to balance the torque of the swell.
These installations are operated by complex real time control/command devices. They can be produced in different versions for both civil and military vessels.
