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Offshore Mast Cranes (OMCs, see pictures) are Huisman-Itrec deep-water cranes and the special features of this crane make them very useful for deep-water installation.
They are applicable for harbor/sheltered water, offshore platform, supply boat and seabed lifts. The slewing range is limited to 420 degrees due to fixed position
of winches. The capacities of the OMC are in a range from 120 mt up
to 5000 mt. The OMC can be equipped with heave compensation systems and subsea lower blocks.

With use of a traction winch and storage winch, the OMC is very suitable for ultra deep water lifts e.g. 10,000ft. The offshore cranes can be equipped with heave compensation, both passive and active systems.

Heave Compensation
In order to extend the weather window for Offshore lifting work, we have developed the following systems:


General
Specs
Drawings
Reference