6In subsections (2)(d) and (6A) of section 1 of the [1965 c. 47.] Merchant Shipping Act 1965 (which authorise tonnage regulations to provide for fines not exceeding £100 for the contraventions and failures there mentioned) for the words " one hundred pounds" in subsection (2)(d) and the word "£100" in subsection (6A) there shall be substituted the word " £200 ".