law: 10. Rates of light-dues leviable.
  2[(1) The Central Government may, by notification in the Official Gazette, prescribe such rates, as it may deem necessary to provide for the purpose mentioned in section 9, at which light -dues shall be payable, and may prescribe different rates for different classes of ships or sailing vessels, or for ships or sailing vessels of the same clas s when in use for different purposes or in different circumstances.]
  (2) Light-dues payable in respect of a ship shall be paid by the owner or master of the ship on its arrival at, and on its departure from, any port in 1[India]:
  Provided that, if light-dues have been paid in accordance with the provisions of this Act in respect of any ship, no further dues shall become payable in respect of that ship for a period of thirty days from the date on which the dues so paid became payable.
  (3) An order under sub-section (1) imposing, abolishing or varying light -dues shall not take effect till the expiration of thirty days from the day on which the order was notified in the Official Gazette.
  3[(4) Every notification issued by the Central Government under sub -section (1) shall be laid, as soon as may be after it is published in the Official Gazette, before each House of Parliament, while it is in session, for a total period of thirty days which may be comprised in one session or in two or more successive sessions, and if, before the expiry of the session immediately following the session or the successive sessions aforesaid, both Houses agree in making any modification in the notification or both Houses agree that the notification should not be made, the notification shall thereafter have effect only in such modified form or be of no effect, as the case may be; so, however, that any such modification or annulment shall be without prejudice' to the validity of anything previously done the notification.]