46.—(1) The provisions of this Act shall extend to and apply in respect of any ship or aircraft registered in the State that is operated by a person who has a principal place of business or ordinary place of residence in the State, whether or not the ship or aircraft is outside the State.

(2) An act which—

(a) is done on or in respect of such a ship or aircraft while subject to the jurisdiction of a country outside the State, and

(b) is required to be done to comply with the law of that country,

shall not constitute discrimination for the purposes of this Act.