273 



Certificate (1973) shall remain in force for a period not exceeding three months 

 or until the Administration issues another International Oil Pollution Preven- 

 tion Certificate (1973) to replace the former, whichever is earlier. The Contract- 

 ing Government of the State whose flag the ship was entitled to fly hitherto shall 

 transmit to the Administration as soon as possible after the transfer takes place 

 a copy of the Certificate carried by the ship at the time of transfer, 



IRegiilation . . . — Reports on Incidents Involving Significant Spillages of Oil] " 

 Chapter II — Requirements for Control of Operational Pollution 



REGULATION 9. — CONTROL OF DISCHARGE OF OIL " 



(1) Subject to the provisions of Regulation 10 of this Annex,^ any discharge 

 into the sea of oil or oily mixtures from ships to which this Annex applies shall 

 be prohibited except when all the following conditions are satisfied : 



( a ) For an oil tanker : 



(i ) The tanker is proceeding en route ; 



(ii) The tanker is more than [50]^" nautical miles from the nearest land; 



(iii) The tanker is not within any of the areas defined in Regulation 1(10) of 

 this Annex ; 



(iv) The instantaneous rate of discharge of oil content does not exceed [60] 

 litres per nautical mile ; 



(v) The total quantity of oil discharged into the sea which may be permitted 

 only during the first or second voyages following unloading of the cargo ^' 

 shall not exceed : 



(1) For the new tankers " of less than [100,000] tons deadweight and for exist- 

 ing tankers " [1/15,000] " of the total quantity of the cargo which the residue 

 formed a part ; and 



(2) For new tankers" of [100,000] tons deadweight or more, [1/30,000] " of 

 the total quantity of the cargo of which the residue formed a part ; 



(iv) The tanker has in operation an oil discharge monitoring and control 

 system required by Regulation 15 of this Annex ; 



(vii ) The tanker has in operation a slop tank arrangement required by Regula- 

 tion 15 of this Annex 



The discharge of oil or oily mixture, other than mixture equivalent to clean 

 ballast, from machinery space bilges, excluding cargo pump room bilges, shall 

 be governed by sub-paragraph (b) of this paragraph ; 



( b ) For a ship other than an oil tanker : 

 ( i ) The ship is proceeding en route ; 



(ii) The oil content of the discharge is less than [100] parts of oil per 

 1,000.000 parts of effluent ; 



(iii) the instantaneous rate of discharge of oil content does not exceed [60] 

 litres per nautical mile ; 



^^ Deppndinp on the final tpxt of Article 7 to be adopted by the Conference, there might 

 be a need to include appropriate requirempnts in this Annex. 



"There was a reasonable division of opinion amonj; delep:atlons on the need to develop 

 special reqnirempnts under this RpRulation for non-persistent oil. A proposed approach of 

 dealinj: with this matter submitted by several delegations is shown on page 92 of this 

 document as an addendum to this footnote. Time did not permit examination of this 

 proposal in any depth. 



^ Some delegations suggested the insertion of the following words at the beginning of 

 the paragraph : 



"Without pre.iudice to more stringent regulations which a coastal State may make 

 [within the limits of national jurisdiction /in respect of areas under its jurisdiction/ in 

 resi^ect of waters under its jurisdiction]." 



1" Some delegations considered that it would he desirable to revise the various figures 

 shown in brackets in this Regulation, since in their view technical advances make possible 

 a significant reduction in the amount of oil being discharged from ships and a greater 

 "distance from land" requirement would represent reasonable tightening of the 1969 

 Amendments requirements. These delegations further suggested substitution of the follow- 

 ing figures for those in square brackets in this Regulation, believing these figures to be 

 technically achievable and highly desirable with respect to the protection of the marine 

 environment: 100 nautical miles in sub-paragraph (l)(a)(ii) and 30 litres per nautical 

 mile in sub-pargraphs (l)(a)(v) and (l)(b)(iii). 



1' The wording "during the first and second voyages following unloading of the cargo" 

 would require improvement to cover all eventualities. 



^ Some delegations proposed that there should be no distinction of the maximum 

 quantity as between new and existing ships. 



^»One delegation considered that the figures shown in the text would create an anomalv 

 as between ships slightly below and above 100,000 tons deadweight and therefore aii 

 interpolation formula should be used. 



