Heave compensator

A heave compensator (HC) is use minimize the motion of a suspended load, by paying out or taking in crane wire and thus compensating for the vertical crane motion.
To a Body Point equipped with HC, it is possible to connect coupling elements of the following types:

  • Fixed elongation coupling

  • Simple wire coupling

  • Multiple wire coupling

  • Lift line coupling

It is not possible to combine the active HC with a tensioner, and is not possible to de-couple a coupling point to which a HC is attached.

The modeled active heave compensator is a cylinder type device, where oil is supplied in the pressure side of the piston, controlled based on measured vertical position of the crane top.
A principal sketch is shown in Figure 4-19. In the present implementation a detailed model for internal function of the compensator is not included.

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