Dubai: 2013 marks the start of a period of rapid growth in the windfarm construction vessel market and it coincides with new operational demands that require careful consideration, particularly in the design of jack-up systems. DNV highlights the need for owners and yards to consider both class and flag state requirements when evaluating limited operation designs. At least 20 new windfarm installation vessels will be required by 2020 only to meet Europe’s anticipated growth in offshore wind capacity which the European Wind Energy Association expects to reach 40GW.