Dutch international heavy and offshore crane manufacturer Huisman has launched an updated series of Subsea Knuckle Boom cranes for use in the offshore construction market.
The new series includes models from 85 to 350 tonne/metres capable of working to water depths up to 3,000 metres. Deeper water options are available, and most units can be ordered with the company’s fibre rope option which offers higher capacities, at greater depths.
The new cranes come equipped with the fifth generation of Huisman’s secondary controlled electro-hydraulic power system, the ‘HMC 05c’. Interaction with the vessel’s power grid has also been improved to allow the cranes to be used with alternative fuels, including ammonia, methanol, or liquified neutral gas.
Product director, Cees van Veluw said: “With the update of our Subsea Knuckle Boom crane series, we have responded to the market need for technical improvements on existing products. Vessel owners have a growing interest in aiming for zero emissions on their newbuild vessels. Also, battery banks on vessels are not only used for ‘spinning reserve’ anymore, but can serve multiple roles on the vessel, all focused on using the energy more efficiently.”
Huisman has also introduced ‘relative heave compensation’ which compensates for motion of both the crane vessel and the supply vessel. Motion detection for the supply vessel is achieved through a remote unit and is already integrated into some cranes and available as a retrofit on others. Cranes can also be equipped with full electric active heave compensation (AHC) which reduces the effects of wave motion.
Established in the Netherlands in 1929, Huisman began as a steel construction company. Over time, it transformed into a leading company in heavy lift and offshore equipment design and manufacture. In the 1960s, Huisman shifted its focus to developing crane and lifting solutions for offshore and heavy lifting purposes. Today, the company employs over 2,500 spread worldwide.