3 
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Contents 
Part A: General 
1 Introduction 5 
2 Fundamentals 5 
2.1 Legal basis 5 
2.2 Subject matter of this standard 5 
2.3 Standard directives for approval practice 6 
2.3.1 Construction and operation of offshore wind turbines 6 
2.3.2 Construction and operation of the power export of offshore wind turbines 9 
2.4 Additional standard specifications for offshore wind farms 9 
Deviations 10 
Updating 10 
Part B: Certificates and approval requirements 
1 Definitions 11 
2 General 12 
3 Site-specific design certificates 13 
3.1 Turbine 13 
3.2 Support structure 13 
3.2.1 Site conditions and design basis 13 
3.2.2 Loading assumptions 14 
3.2.3 Support structure without foundation elements 15 
3.2.3.1 General 15 
3.2.3.2 Technical codes of practice 15 
3.2.3.3 Required certificates 16 
3.2.3.4 Structural design 17 
3.2.4 Foundation elements 17 
3.2.4.1 Preliminary remarks 17 
3.2.4.2 Safety certificate concept and process, level of stability against collapse 18 
3.2.4.3 Technical codes of practice 18 
3.2.4.4 Material designations and parameters 19 
3.2.4.5 Soil model and characteristic soil parameters 19 
3.2.4.6 Boundary conditions for certificates 19 
3.2.4.7 Required certificates 19 
3.2.4.7.1 Certificate of stability of the seabed 19 
3.2.4.7.2 Certificates for foundation elements 20 
3.2.4.7.3 Certificates for special forms of foundation 21 
3.3 Certificate of conformity for evaluating the site-specific configuration 
of offshore wind turbines 21 
3.4 Submarine cables 21 
3.4.1 General 21 
3.4.2 Technical codes of practice 21 
3.4.2.1 Cabling within the farm 21 
3.4.2.2 Connection to the power grid 22 
3.4.2.2.1 Alternating current transmission 22