The standard is applicable to all types of support structures and foundations for offshore wind turbines.

The standard is applicable to the design of complete structures, including substructures and foundations, but excluding wind turbine components such as nacelles and rotors.

This standard gives requirements for the following:

- design principles

- selection of material and extent of inspection

-design loads

- load effect analyses

- load combinations

- structural design

- foundation design

- corrosion protection.

A 400 Non-DNV codes

In case of conflict between the requirements of this standard and a reference document other than DNV documents, the requirements of this standard shall prevail.

The provision for using non-DNV codes or standards is that the same safety level as the one resulting for designs according to this standard is obtained.

Where reference in this standard is made to codes other than DNV documents, the valid revision of these codes shall be taken as the revision which was current at the date of issue of this standard, unless otherwise noted.

When code checks are performed according to other codes than DNV codes, the resistance and material factors as given in the respective codes shall be used.

National and governmental regulations may override the requirements of this standard as applicable.