14In subsection (5) of section 24 of the [1949 c. 43.] Merchant Shipping (Safety Convention) Act 1949 (under which a master of a ship carrying grain who fails to deliver to customs the notice required by that section or delivers such a notice which is false in a material particular is liable to a fine not exceeding £100) for the words " one hundred pounds " there shall be substituted the words " two hundred pounds in the case of a failure and five hundred pounds in the case of a false statement ".