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Other factors involved:

Hyde RRS cannot overcome certain limitations imposed by the ship's architectural design. As a result, Hyde RRS is not suitable for all vessels. Some guidelines for determining what is applicable are:

The vessel MUST have a rudder and the rudder MUST be capable of causing the vessel to roll. One of the best indicators of RRS performance is the ability of a particular rudder to cause its vessel to roll. The higher roll angle that can be achieved in this manner (10, 15 degrees), the more roll REDUCTION capability the Hyde RRS system potentially has to use.
The vessel should be longer than 100 feet (30m) and should have a displacement hull as opposed to a planing hull. Rudders do not move fast enough to permit "reactive" operation. Instead, the control system uses its "experience with the past" to control the rudder rather than a single measurement at the present instant of time.
The vessel should exhibit the usual delay between a movement of the rudder and the actual start of vessel turning (yawing).