This process may in some cases be implemented through the use of equipment systems that are also used for roll stabilisation while underway.
A variable system that uses "active fins" designed specifically for roll attenuation of a vessel while underway achieves lifting force through the flow of water over the fin's surface.
When these same systems are used for roll stabilisation of stationary vessels, the lift force available from water flow over the fin while underway is not available.
For a stationary vessel, the ability to generate a lifting force (i.e. roll-resisting force) is limited to that achieved by any powered fin movements, and by the water volume displaced while stroking the fins in one direction at a precise point in time.
Various commercial suppliers produce a range of stabilization systems that can be used at rest, on-anchor, or at zero-speed.