Section 5(1)(f) in The Merchant Shipping (Prevention of Pollution by Garbage From Ships) Rules, 2009
(f)the North Sea area means the North Sea proper including seas therein with the boundary between -(i)the North Sea southwards of latitude 62°N and eastwards of longitude 4°W,(ii)the Skagerrak, the southern limit of which is determined east of the Skaw by latitude 57°44.8'N; and(iii)the English Channel and its approaches eastwards of longitude 5°W and northwards of latitude 48°30'N;