Pedestal Mounted Offshore Crane

The Huisman Pedestal Mounted Offshore Crane (PMOC) can be used for various tasks including the unloading of supply vessels, pipe transfer, offshore installation work, deck and subsea lifts. It comprises a steel crane house, bolted to the pedestal via the slew bearing, a lattice or box girder type boom and various hoist tackles to control the boom and the lower blocks.

All main equipment - winches, electronic cabinets and hydraulic power units - is located inside the crane house to protect it from the harsh marine environment. An operator cabin is mounted at a side of the crane house. The boom hoist runs from the top of the crane house to the boom tip and controls the radius of the lower blocks.

The cranes are either electro-hydraulic driven or completely electric driven. On our electric-hydraulic cranes redundancy is provided by installing an emergency diesel generator inside the crane, on our fully electric driven cranes redundancy is provided within the electric drive system. The crane will remain operational by installing two independent power supplies or an emergency supply.

The PMOC has a small tail swing saving deck space. It can be fitted on a square to round shaped pedestal to ensure an improved load transfer into the vessel. For heavy duty tasks, like pipe transfer, Huisman builds PMOC's with special attention to fatigue issues, for example by installing large diameter sheaves.

Huisman has extensive experience in building and designing PMOC's up to 600mt and we are constantly exploring new and heavier means of application. Besides the regular harbour/sheltered waters working conditions, the crane can be used offshore and for subsea lifts.