Regulation 10

( a ) A Cargo Ship Safety Construction Certificate shall be valid for a period of not more than 60 months. ( b ) A Cargo Ship Safety Equipment Certificate shall be valid for a period of not more than 24 months. ( c ) A Cargo Ship Safety Radiotelephony Certificate or a Cargo Ship Safety Radiotelegraphy Certificate shall be valid for a period of not more than 12 months. (2) A Cargo Ship Exemption Certificate shall not be valid for a longer period than that of the certificate to which it refers. (3) If a ship at the time when its certificate expires is not in Singapore, the certificate may be extended by the Director, but such extension shall be granted only for the purpose of allowing the ship to complete its voyage to Singapore or a port in which it is to be surveyed, and then only in cases where it appears proper and reasonable to do so. (4) No certificate shall be thus extended for a longer period than 5 months, and a ship to which such extension is granted shall not, on its arrival in Singapore or the port in which it is to be surveyed, be entitled by virtue of such extension to leave Singapore or that port without having obtained a new certificate. (5) A certificate which has not been extended under paragraphs (3) and (4) may remain valid for a further period of one month from the date of expiry. (6) A certificate shall cease to be valid — ( a ) if major alterations have taken place in the construction, equipment, fittings, arrangements, or material required without the permission of the Director; ( b ) if periodical or intermediate surveys are not carried out within the periods specified under regulation 7(1)( b ) and ( c ); or ( c ) unless it has been extended in accordance with paragraph (3).