Definition - What does Motion Compensator mean?
A Motion Compensator is a device used to decrease the effects of the relative motion that happens between two joined objects. It can be used between a stationary object and a floating object. The stationary object can be an offshore production unit that is permanently installed in the seabed. The main use of a Motion Compensator is to reduce a motion's negative effects, but it does not prevent the motion.
Petropedia explains Motion Compensator
A Motion Compensator is a special device used in offshore well production units. The production vessel can experience certain effects while floating on the sea. Therefore, a Motion Compensator is deployed between the permanent vessel and the floating vessel to minimize the effects of the motion. There is another compensator that is used to manage the motion in one direction, which is called as heave compensator. In some cases, a Motion Compensator and heave compensator are thought of as same. The Motion Compensator device is helpful in reducing the hysteresis and the varied forces and stresses.