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(e) If after unloading a Category B substance within a special area, any 
residues or tank washings are to be retained on board until the ship is out- 
side the special area, the Master shall so indicate by an appropriate entry 
in the Cargo Record Book and in this case the procedures set out in Regula- 
tion 6(2) of this Annex shall be applicable. 
Category D substances in all areas 
(7) The Master of a ship shall, with respect to a Category D substance, ensure 
compliance with the following: 
(a) Ifa tank is partially unloaded or unloaded but not cleaned, an 
appropriate entry shall be made in the Cargo Record Book. 
(b) If the tank is to be cleaned at sea: 
(i) the cargo piping system serving that tank shall be drained and an 
appropriate entry made in the Cargo Record Book ; 
(ii) where it is intended to discharge the quantity of substance re- 
maining into the sea, the necessary dilution of the substance satisfac- 
tory for such a discharge shall be achieved. An appropriate entry shall 
be made in the Cargo Record Book ; 
(iii) where the tank washings are not discharged into the sea, if 
any internal transfer of tank washings takes place from that tank an 
appropriate entry shall be made in the Cargo Record Book; and 
(iv) any subsequent discharge into the sea of such tank washings 
shall be made in accordance with the requirements of Regulation 5(4) 
of this Annex. 
(c) If the tank is to be cleaned in port: 
(i) the tank washings shall be discharged to a reception facility and 
an appropriate entry shall be made in the Cargo Record Book; or 
(ii) the tank washings shall be retained on board the ship and an 
appropriate entry shall be made in the Cargo Record Book indicating 
the location and disposition of the tank washings. 
Discharge from a slop tank 
(&) Any residues retained on board in a slop tank, including those from pump 
room bilges, which contain a Category A substance, or within a special area either 
a Category A or a Category B substance, shall be discharged to a reception 
facility in accordance with the provisions of Regulation 5(1), (7) or (8) of 
this Annex, whichever is applicable. An appropriate entry shall be made in the 
Cargo Record Book. 
(9) Any residues retained on board in a slop tank, including those from pump 
room bilges, which contain a quantity of a Category B substances outside a 
special area or a Category C substance in all areas in excess of the aggregate 
of the maximum quantities specified in Regulation 5(2)‘c), (8) (c) or (9) (c) 
of this Annex, whichever is applicable, shall be discharged to a reception facility. 
An appropriate entry shall be made in the Cargo Record Book. 
Regulation 9 
CARGO RECORD BOOK 
(1) Every ship to which this Annex .applies shall be provided wiht a Cargo 
Record Book, whether as part of the ship’s official log book or otherwise, in 
the form specified in Appendix IV to this Annex. 
(2) The Cargo Record Book shall be completed, on a tank-to-tank basis, when- 
ever any of the following operations with respect to a noxious liquid substance 
take place in the ship: 
(i) loading of cargo; 
(ii) unloading of cargo; 
(iii) transfer of cargo; 
(iv) transfer of cargo, cargo residues or mixtures containing cargo to a 
slop tank; 
(v) cleaning of cargo tanks; 
(vi) transfer from slop tanks; 
(vii) ballasting of cargo tanks; 
(vill) transfer of dirty ballast water ; 
(ix) discharge into the sea in accordance with Regulation 5 of this Annex. 
(3) In the event of any discharge of the kind referred to in Article 7 of the 
