Maritime Jurisdiction Act 2021


Baseline, Territorial Sea and Contiguous Zone, etc.


6. (1) Each of the following is the baseline for the purposes of this Act:

(a) the low-water mark on the coast of the mainland or of an island;

(b) the low-water mark on any low-tide elevation situated wholly or partly at a distance not exceeding 12 nautical miles from the mainland or an island;

(c) the straight line across the mouth of a river between the most seaward point at the low-water mark on each bank of the river, where that river flows directly into the sea.

(2) (a) Notwithstanding subsection (1), the Government may by order prescribe a straight baseline in relation to any part of the State in accordance with article 7 of the Convention.

(b) Notwithstanding subsection (1), the Government may by order prescribe the closing line of the mouth of any bay in accordance with article 10 of the Convention.

(3) The Maritime Jurisdiction (Straight Baselines) Order 2016 ( S.I. No. 22 of 2016 ) and the Maritime Jurisdiction (Bay Closing Lines) Order 2019 ( S.I. No. 155 of 2019 ) shall continue in operation and have effect on and after the commencement of paragraph (b) of section 4 as if made under this section, and may be amended or revoked accordingly.

(4) In this section—

“bay” means a well-marked indentation on the coast the area of which is as large as, or larger than, that of the semi-circle whose diameter is a line drawn across the mouth of that indentation;

“island” means a naturally formed area of land surrounded by water which is above water at high water.