In any proceedings, a document purporting to be a copy of any instrument in writing made or issued (whether before or after the passing of this Act) under the Fisheries Acts or this Act in relation to the Foyle AreaF1 or the Carlingford Area or any part thereof shall, if it is certified under the common seal of the Commission to be a true copy, be prima facie evidence of the instrument.

The Documentary Evidence Act, 1868 M1, as amended by the Documentary Evidence Act, 1882 M2, shall apply to the Commission in like manner as the said Acts apply to certain rule-making authorities under section threeF2 of the Rules Publication Act (Northern Ireland), 1925 M3.