(1) A maritime enforcement officer may, for a purpose mentioned in paragraph (2) or (3), exercise any of the maritime enforcement powers in relation to -

(a) a British ship in foreign waters or international waters,

(b) a ship without nationality in international waters, or

(c) a foreign ship in international waters,

and a ship within sub-paragraph (a), (b) or (c) is referred to in this Part as "a relevant ship".

(2) The maritime enforcement powers may be exercised for the purpose of enforcing any of the following -

(a) a prohibition in any of regulations 21 to 24 (trade prohibitions relating to restricted goods and restricted technology);

(b) a prohibition in any of regulations 28 to 31 (import, supply, transfer etc of goods and technology from Iran);

(c) a prohibition imposed by a condition of a trade licence in relation to a prohibition mentioned in sub-paragraph (a) or (b).

(3) The maritime enforcement powers may also be exercised in relation to a relevant ship for the purpose of -