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Kongsberg Maritime and MacGregor to deliver PGGS for OHT Alfa Lift

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Kongsberg Maritime (KM) has signed a new contract with the maritime services and solutions provider MacGregor to deliver a Pile Gripper Guidance System (PGGS) for the OHT Alfa Lift.

Scheduled for delivery in 2021, Alfa Lift will be the world’s largest custom-built offshore wind foundation installation vessel, equipped with a 3,000t main crane.

The ship’s 10,000+ m2 ‘smart’ deck will carry up to 14 XL monopiles per voyage and will also be fully submersible to a depth of 14.66 meters.

Under the terms of the contract, MacGregor will deliver a motion-compensated pile gripper frame, while KONGSBERG’s PGGS will integrate the gripper with the many other KM systems on board the OHT Alfa Lift.

A K-Pos dual-redundant dynamic positioning system will interface with a K-Chief marine automation system and K-Thrust thruster control system, bringing all the technical and economic benefits which result from the integration of a vessel’s monitoring and control functions, while a K-Bridge integrated navigation system will provide a single, intuitive user interface for the ship’s multiple connected systems.

A full suite of safe, reliable, compact and cost-effective K-Power products will accommodate the main switchboard, generators and drives, while KM’s azimuth and tunnel thrusters will take care of the vessel’s propulsion, steering and positioning thrust.

“Working with Kongsberg Maritime and OHT on this solution has been a mutually rewarding process. We’re significantly raising the bar for safety, sustainability, precision and efficiency by dispensing with so many of the challenges traditionally posed by complex offshore operations of this nature.”

Kristina Arutjunova, director Sales and Marketing Innovations, MacGregor.

“This order secures KM’s role as a leading technology provider for heavy offshore vessels. Working closely with MacGregor, we have developed an innovative solution that improves the efficiency of foundation installation vessels by replacing lengthy, temporary mooring processes with full DP, in combination with an integrated guidance system and hydraulic frame mechanism.

“The interdependence such enterprises require will benefit us all. Our technology, solutions and expertise will continue to make harnessing wind power safer and more efficient by streamlining installation processes, while the lessons we learn from our work with offshore energy clients will contribute considerably towards creating a cleaner and more sustainable future.”

Birger Evensen, sales director offshore, Kongsberg Maritime.

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