Article 9 Permanent lights or buoys near works and colour and other markings

After the completion of an authorised work the undertaker shall exhibit such lights from sunset to sunrise, and take such other steps for the prevention of danger to navigation as Trinity House may from time to time direct.

The undertaker shall exhibit every night from sunset to sunrise lights for the prevention of danger to aircraft of a shape, colour and character as directed by the Civil Aviation Authority.

Unless otherwise directed by the Secretary of State, the undertaker shall ensure that every wind turbine 12.8m above the level of high water and all nacelles and blades are painted grey (colour code RAL 7035).