Civil Jurisdiction (Offshore Activities) Order 1987
The Order divides United Kingdom territorial waters and waters within areas designated as part of the United Kingdom continental shelf (under the Continental Shelf Act 1964) into English, Scottish and Northern Irish parts to which English, Scottish and Northern Irish civil law is applied respectively, and confers jurisdiction accordingly on the High Court in England and Wales, the Court of Session and the High Court in Northern Ireland.
The Order also provides for installations in an English, Scottish or Northern Irish part to be treated, for the purposes of the Wireless Telegraphy Act 1949 and the Radioactive Substances Act 1960, as being in England, Scotland or Northern Ireland.
See the legend tab on MS Maps NMPi layers for the various components of the limit; part of the limit is the Scottish Adjacent Waters Boundary.