4. Advisory Committees .
(1) The Central Government shall appoint a Central Advisory Committee and shall consult it in regard to
(a) the erection or position of lighthouses or of any works appertaining thereto;
(b) additions to, or the alteration or removal of, lighthouses;
(c) the variation of the character of any lighthouse or of the mode of use thereof;
(d) the cost of any proposals rel ating to lighthouses; or
(e ) the making or alteration of any rules or rates of dues under this Act .
(2) The Central Government may, if it thinks fit, appoint an Advisory Committee for any district for the purpose of advising in regard to any of the matters specified in sub-section (1) in so far as the interests of the district are affecte d thereby.
(3) Advisory Committees shall consist of persons representing interests affected by this Act or having special knowledge of the subject -matter thereof.
4[(4) No act or proceeding of the Advisory Committee shall be invalidated merely by reason of
(a) any vacancy in, or any defect in constitution of, the Advisory Committee;
(b) any defect in appointment of a person acting as a m ember of the Advisory Committee; or
(c) any irregularity in the procedure of the Advisory Committee not affecting the merits of the case.]