What the Hyde RRS system does:
Hyde RRS is a microcomputer based electronic control system for a ship's rudder(s). Its objective is to move the rudder in such a way that the ship's roll motions are reduced without adversely affecting the ship's course. The system includes an advanced adaptive autopilot for the purpose of accurately maintaining the vessel's course. Together, the Hyde autopilot and the Hyde RRS system work to both reduce roll and keep the vessel on course.
On most ships, movement of the rudder does not immediately affect the heading of a ship. On nearly all ships, however, movement of the rudder will cause the vessel to heel or roll in the direction that the rudder is moved. In fact, the vessel can often be induced to roll by rapidly moving the rudder from side to side. Together, these effects can be used to reduce roll and at the same time maintain a desired course. Hyde RRS does this by precisely timing rudder commands so that the rudder moves in a manner to oppose the roll motions that are sensed by the roll sensor in the Hyde RRS.