may provide for their operation anywhere outside the United Kingdom and for their application to persons, whether or not British subjects, and to companies, whether or not incorporated under the law of any part of the United Kingdom,

may provide that in any proceedings for an offence under the regulations an averment in any process of the fact that anything was done or situated within waters to which this Act applies shall, until the contrary is proved, be sufficient evidence of that fact as stated in the averment,

may provide that proceedings for any offence under the regulations may be taken, and the offence be treated for all incidental purposes as having been committed, in any place in the United Kingdom,

may provide for any provisions of the Merchant Shipping Acts 1894 to 1970 relating to inquiries and investigations into shipping casualties to apply (with such modifications as may be specified) in relation to casualties involving any submersible apparatus which is not a ship as they apply to ships,

may provide that specified provisions of any enactment (other than this Act) shall, in such circumstances as may be prescribed, not have effect in relation to such class or description of, or to such particular, submersible or supporting apparatus as may be prescribed;

may make different provision for different classes or descriptions of submersible or supporting apparatus and for different circumstances,

may contain such supplemental, and incidental provisions as appear to the Secretary of State to be expedient, including provision for requiring the payment of fees in connection with the making of applications and the granting of licences or issue of certificates, or other matters.