Mast Cranes

In 1984 we introduced the Mast Crane in the heavy lifting industry. Since then this innovative crane has achieved a dominant position particularly for the use onboard Heavy Lift Vessels. We delivered Mast Cranes up to a lifting capacity of 3000t and we currently have a 5000mt Mast Crane under construction.

We have extensive experience in designing and constructing two specific types of Mast Cranes - Heavy Lift Mast Cranes and Offshore Mast Cranes.

Our Mast Crane is based on the mast derrick principle. It consists of a fixed mast fitted with a rotating slew platform supporting the boom and a mast head. The boom hoist tackle runs from the mast head to the top of the boom and controls the boom angle. This allows the different hoists to be positioned at the preferred radius. The mast construction gives an inherent safety feature; the load moment is carried by the mast and not by the slew bearings.

The major components of the Mast Crane are installed inside the crane, well protected from the harsh marine environment. The rotating parts of the crane are provided with totally enclosed slew bearings and therefore maintenance is limited. Today's Mast Cranes are completely driven by frequency controlled electro-motors.

Our Mast Cranes up to 3,000t lifting capacity are fully assembled. This makes delivery and installation in one single piece possible. Larger Mast Cranes are delivered in only three of four pieces making a fast and easy installation possible. The rigorous shop testing prior to delivery ensures short commissioning times after mechanical installation.

Most of our cranes are custom-made. Due to our extensive experience we are currently able to make design simplifications and to include more redundancy in the designs with a focus on reliable operation.