The Fjellstrand Motion Dampening System, MDS,
consists of an active foil under each bow and active
interceptors/flaps at stern.
The MDS automatically counteracts motions by adjusting the
foils and interceptors by
hydraulic power. The system computes the actions from motion
reference units.

MDS dramatically reduces the vesselīs movement
in bad weather and thus improves passenger comfort/reduces the
risk of motion sickness.
The system was developed by Fjellstrand and is
today installed on the majority of our new buildings. MDS can be
retrofitted on vessels already in operation, both Fjellstrand
made and others.
With approximately 50 systems in operation
worldwide, the Fjellstrand MDS has a proven record of efficient
operation and technically reliability.
In bad weather, the MDS enables the vessel to maintain higher
speeds than a vessel without MDS.