(1) A ship of Nepal of 50 or more than 50 gross tonnage and of motive power of 150 horse power or more, and travelling at sea, shall hold a logbook of engine as prescribed.
(2) Details relating to the motive power installed with the ship, particularly the situation of installations, functioning and use of engine, date of overhauling, type of function performed and operation thereof and all details relating to services shall be set down in such a logbook.
(2) If any ship is damaged, causing adverse effect to its sea worthiness (capacity to travel at sea), all certificates obtained by that ship pursuant to Section 7 shall be invalid.
(3) The certificate of international load line shall be invalid after the expiration of the period specified in that certificate. Provided that, such period shall not be so specified as to exceed the period of more than Five years after the date of its issue.
(4) The certificate of exemption shall not be valid after the expiration of the period specified in it.