12 Enforcement of principal Act.U.K.
(1)For the purposes of any offence under the principal Act committed within the seaward limits referred to in section 9(1) of this Act but not within the United Kingdom, proceedings for that offence may be taken, and the offence may for all incidental purposes be treated as having been committed, in any place in the United Kingdom.
(2)For the purpose of the enforcement of the principal Act, a member of a police force shall have in any area of the sea within the seaward limits aforesaid all the powers, protection and privileges which he has in the area for which he acts as constable.
(3)In the application of this section to Northern Ireland, the following subsection shall be substituted for subsection (2):
“(2) For the purpose of the enforcement of the principal Act, a member of the Royal Ulster Constabulary shall have in any area of the sea within the seaward limits aforesaid all the powers, protection and privileges which he has in Northern Ireland.”