602 



only for the purpose of allowing the ship to complete its voyage to 

 the State whose flag the ship is entitled to fly or in which it is to be 

 surveyed and then only in cases where it appears proper and reason- 

 finlp f^o ri o so 



(3) No Certificate shall be thus extended for a period longer than 

 five months and a ship to which such extension is granted shall not 

 on its arrival in the State whose flag it is entitled to fly or the port in 

 which it is to be surveyed, be entitled by virtue of such extension to 

 leave that port or State without having obtained a new Certificate. 



(4) A Certificate which has not been extended under the provisions 

 of paragraph (2) of this Regulation may be extended by the Adminis- 

 tration for a period of grace of up to one month from the date of 

 expiry stated on it. 



(5) A Certificate shall cease to be valid if significant alterations 

 have taken place in the equipment, fittings, arrangement or material 

 required without the approval of the Administration, except the di- 

 rect replacement of such equipment or fittings. 



(6) A Certificate issued to a ship shall cease to be valid upon trans- 

 fer of such a ship to the flag of another State, except as provided in 

 paragraph (7) of this Eegulation. 



(7) Upon transfer of a ship to the flag of another Party, the Cer- 

 tificate shall remain in force for a period not exceeding five months 

 provided that it would not have expired before the end of that period, 

 or until the Administration issues a replacement Certificate, which- 

 ever is earlier. As soon as possible after the transfer has taken place 

 the Government of the Party whose flag the ship was formerly en- 

 titled to fly shall transmit to the Administration a copy of the Cer- 

 tificate carried by the ship before the transfer and, if available, a 

 copy of the relevant survey report. 



REGULATION 8 



Discharge of Sewage 



(1) Subject to the provisions of Eegulation 9 of this Annex, the 

 discharge of sewage into the sea is prohibited, except when: 



(a) the ship is discharging comminuted and disinfected sew- 

 age using a system approved by the Administration in accordance 

 with Regulation 3(l)(a) at a distance of more than four nauti- 

 cal miles from the nearest land, or sewage which is not com- 

 minuted or disin,fected at a distance of more than 12 nautical 

 miles from the nearest land, provided that in any case, the sew- 

 age that has been stored in holding tanks shall not be discharged 

 instantaneously but at a moderate rate when the ship is en route 

 and proceeding at not less than 4 knots ; the rate of discharge shall 

 be approved by the Administration based upon standards de- 

 veloped by the Organization ; or 



(b) the ship has in operation an approved sewage treatment 

 plant which has been certified by the Administration to meet 

 the operational requirements referred to in Regulation 3(1) (a) 

 (i) of this Annex; and 



(i) the test results of the plant are laid down in the ship's 

 International Sewage Pollution Prevention Certificate 

 (1973) ; 



