The Kongsberg Simrad family of Vessel Control Systems incorporates Dynamic Positioning and Joystick systems, Position Mooring, Thruster Control and Vessel Automation Systems-all based on common hardware and software. A sea going vessel is subject to wind, wave and current forces. The vessel’s response to these sensor inputs is sensed, and the thrust required to counteract these forces is accurately calculated. The Dynamic positioning system controls the vessel’s motion in the three horizontal degrees of freedom- surge, sway and yaw. Vessel movements are measured by the Gyro Compass and the position reference systems. Reference system readings are corrected for roll and pitch using readings from the Vertical Reference Sensor. Typical applications include ROV survey operations, Diving Vessel station keeping, Single Point Mooring station keeping, Offshore Support Vessels, Pipeline Lay Vessels, Dredging Vessels and many other applications requiring precise vessel positioning.