# The Territorial Sea (Limits) Order 1987, Article 4


In this Order:—
(a) “straight line” means a loxodromic line;
(b) all positions given by means of co-ordinates are defined on European Datum (1st Adjustment 1950);
(c) “median line” is a line every point of which is equidistant from the nearest points of the baselines from which the breadth of the territorial sea adjacent to the United Kingdom and the Isle of Man respectively is measured.

---
Source: https://www.legislation.gov.uk/uksi/1987/1269/article/4 (the official version)
Page: https://openlegislation.uk/territorial-sea-limits-order-1987/article-4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.