Article 9 Permanent lights, navigational safety aids and colour

After completion of the authorised works the undertaker shall around the perimeter of the wind turbines lay down such buoys, 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 the Secretary of State otherwise directs, the undertaker shall ensure that so much of any wind turbine as is above the level up to which Trinity House direct colouring for navigational safety reasons, and all nacelles and blades, are painted light grey (colour code RAL 7035).