Offshore staff
SCHIEDAM, the Netherlands — Huisman has released a new range of knuckle boom cranes for offshore subsea construction.
Models range from 85 metric tons up to 350 mt and cover set-ups with a winch below deck and on the back of the crane. All are suited to installations in up to 3,000 m water depth, with deeper water capabilities provided as an option, along with Huisman’s fiber rope subsea deployment tool to increase the lifting capacity at depth.
The cranes feature the most recent version of the company’s secondary controlled electro-hydraulic power system as standard. Huisman recently implemented the fifth generation of its motion controller HMC 05c, designed to provides crane operators with improved response and accuracy.
Interaction with the vessel’s power grid has also been strengthened, the company said, to enable use with alternative fuels such as ammonia, methanol or LNG.
All cranes can be equipped with full electric active heave compensation to support the focus on high-capacity energy storage systems in offshore construction vessels and large-scale energy regeneration.
And with a growing focus on offshore crane lifts from one vessel to another, Huisman has introduced relative heave compensation. This is said to allow for compensation not only for the motion of the crane vessel but also that of the other supply vessel.
In the latter case, motion detection takes place through a remote motion reference unit, which transmits the signal wirelessly to the Huisman offshore crane. This arrangement has already been integrated into various offshore cranes and can be retrofitted to existing Huisman cranes.
Cees van Veluw, product director of cranes, said, “Vessel owners have more and more 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.”
10.25.2023
