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FEATURE SPONSOR


VESSEL DECK SYSTEMS & EQUIPMENT


THE ‘NEXT GENERATION GANGWAY’ AT WORK IN THE IRISH SEA


Barge Master and Bosch Rexroth’s ‘Next Generation Gangway’ is in operation on the subsea-support walk-to-work vessel VOS Start from Vroon Offshore Services. The ship is chartered by MHI Vestas Offshore for the installation of wind turbines at the Walney Extension Wind Farm at the Irish Sea


UNIQUE SOLUTION To make VOS Start one of the most innovative ships in the market a unique solution was provided by Barge Master and Bosch Rexroth, its partner for the gangway. The gangway is designed and built to the highest standards and certified under the new DNV-GL rules for motion-compensated gangways.


NEXT GENERATION GANGWAY The motion-compensated gangway is mounted on a height-adjustable pedestal with an integrated elevator enabling a continuous workflow. Additionally, the pedestal makes it possible for the gangway to land on any height, keeping the gangway horizontal and providing stepless transfers.


Both people and cargo can be transported from the ship deck or the level below to the level of the gangway, where they can instantly cross. The gangway has been extensively tested onshore at a specially designed test facility at Bosch Rexroth in Boxtel. The onshore testing made sure that only a very short period was needed to get the gangway operational on the VOS Start. Only a few days of offshore testing were needed.


SPECIFICATION


This next generation gangway, which is operated by a single operator, is equipped with extremely fast sensors and control technology. Movements of the ship can be translated into ‘counter movements’ of the gangway within milliseconds. Because of this the system is able to compensate for wave heights up to three metres (Hs) allowing safe transfers.


Making the system truly unique is the fact that forces are also measured in the tip of the gangway, which allows for the forces to be kept low. This reduces the possibility of the tip to slip, significantly increasing the workability.


The ‘Next Generation’ Gangway


SUCCESSFUL PARTNERSHIP Barge Master is a leading company in the field of motion compensation systems. Its CEO, Martijn Koppert, explained that the partnership with Bosch Rexroth, the drive and control company, was not a coincidence. “We have been in business with Bosch Rexroth already since 2008. We started in a conventional supplier/customer relation, but this has evolved since the development of the Next Generation Gangway. We formed a Joint Project Team, which results in a far better system by using the best expertise available. This is proven by the fact that this gangway is an entirely new concept.”


CLOSE COOPERATION


The two Dutch companies worked in a close cooperation, using each other’s strengths. As stated by Martijn: “With this solution users are able to transfer people and goods from ship to platform 24 hours a day, seven days a week, making this solution far better than anything available on the market at this moment. I am confident that, together with Bosch Rexroth, we will optimally serve the offshore wind market with this next generation gangway.”


WALK-TO-WORK Vroon Offshore Services is delighted to be operating this Next Generation Gangway. Foppe Molenaar, Vroon Newbuilding Superintendent stated: “VOS Start is an ultramodern and state-


of-the-art subsea-support walk-to-work vessel, providing clients with a totally new concept that offers optimum safety and comfort. By introducing this vessel – the first of its kind and one of two sister vessels constructed in China for Vroon – our Company aims to revolutionise working practices in the renewable energy and oil & gas sectors.”


Foppe continued: “The continuous access is what makes this system unique compared to traditional systems. The Barge Master motion-compensated gangway system ensures safe and efficient transfer of personnel, whatever the sea conditions. These gangways are now the preferred option during construction and maintenance work at offshore windfarms and oil & gas platforms, offering clients a reliable and cost-effective alternative to helicopter flights.


“It took just a two-month window to complete the final production of components, factory testing, on-board installation and commissioning, have the system fully certified, in operation and deployed in the windfarm.”


He concluded: “With this combination of fine facts we strongly believe that VOS Start can truly create a game- changing market!”


Barge Master BV www.windenergynetwork.co.uk 71


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