DISCOVER Magazine #7

New Walk 2 Work Vessel set to launch end 2016

Published in category: Offshore Wind

The innovative new Damen Walk 2 Work Vessel will be available at the end of 2016. Given market demand, Damen took the decision to build the new vessel for stock to ensure vessels would be promptly available for customers.

Damen’s Walk 2 Work Vessel has been designed to provide motion compensated for personnel and equipment, while facilitating optimum logistic flows for carrying out maintenance and repairs for the Offshore Wind industry, as well as for unmanned offshore installations.

Extensive operating window

With excellent seakeeping ability and low power consumption, the Walk 2 Work Vessel will be able to remain at sea for a month. The vessel’s robust seakeeping performance facilitates access to the Central North Sea, which is the most challenging area for operations, for up to 80% of the time. In other areas of the North Sea, accessibility increases to 95%. This results in greater turbine availability, less lost production time and lower Operations & Maintenance costs. It is estimated that the vessel contributes to a 25% reduction in O&M costs over the lifetime of a large wind farm.

The Offshore Support Vessel provides in field accommodation and a large work deck for engineers involved in all phases of wind farm projects. With well-appointed accommodation for 45 maintenance personnel plus 15 crew, the Walk 2 Work Vessel features an efficient work and storage space, a number of sheltered workshops and a helideck.

The vessel is a monohull with the bridge located amidships. With a 90m length overall and a beam of 20m, the vessel features a spacious, 500m2 deck, as well as approximately 400m2 of internal storage space.

Safe turbine access

A telescopic, motion and heave compensated crane and gangway and the DP system allow maintenance personnel to quickly and safely walk to and from the turbine in a range of weather conditions, including waves of up to 3m. The DP performances are tuned to the Baltic, Irish and North Sea areas. Standby, Emergency Rescue/Response and Recovery duties can also be performed.

Crews have comfortable accommodation, which includes a fitness and wellness centre and 60 single occupancy cabins.

Optimal efficiency

By extensively analysing the different tasks on board and spare parts usage, Damen was able to design the public spaces to provide the most efficient workflow and storage spaces. The optimised hull form results in an average of 25% less installed power to achieve the same speed as a conventional hull. When considering DP operations and power output, significantly less (20%) thruster output is required because of the position of the accommodation.

Damen has also developed a fuel consumption tool whereby total fuel consumption in various operational conditions in a specific area can be calculated. This tool gives a good indication of what can be expected on an annual basis given a certain operational profile.

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