Article 2 of this Order establishes, under section 22 of the Petroleum Act 1987, a safety zone having a radius of 500 metres from the specified point around the installation (which is a subsea installation) specified in the Schedule to this Order to be stationed in waters to which section 21(7) of that Act applies (these include territorial waters and waters in areas designated under section 1(7) of the Continental Shelf Act 1964 (c. 29)).