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Text of Annex II of the Convention Adopted by the Conference 
REGULATIONS FOR THE CONTROL OF POLLUTION BY NoxioUs LIQUID SUBSTANCES 
IN BULK 
Regulation 1 
DEFINITIONS 
For the purposes of this Annex: 
(1) “Chemical tanker” means a ship constructed or adapted primarily to carry 
a cargo of noxious liquid substances in bulk and includes an “oil tanker” as de- 
fined in Annex I of the present Convention when carrying a cargo or part cargo 
of noxious liquid substances in bulk. 
(2) “Clean ballast” means ballast carried in a tank which, since it was last 
used to carry a cargo containing a substance in Category A, B, C, or D has 
been thoroughly cleaned and the residues resulting therefrom have been dis- 
charged and the tank emptied in accordance with the appropriate requirements of 
this Annex. 
(3) “Segregated ballast’? means ballast water introduced into a tank perma- 
nently allocated to the carriage of ballast or to the carriage of ballast or cargoes 
other than oil or noxious liquid substances as variously defined in the Annexes 
of the present Convention, and which is completely separated from the cargo 
and oil fuel system. 
(4) “Nearest land” is defined in Regulation 1(9) of Annex I of the present 
Convention. 
(5) “Liquid substances” are those having a vapour pressure not exceding 2.8 
kp/cm’ at a temperature of 37.8°C. 
(6) “Noxious iiquid substance” means any substance designated in Appendix 
II to this Annex or provisionally assessed under the provisions of Regulation 3 (4) 
as falling into Category ‘A, B, C or D. 
(7) “Special area” means a sea area where for recognized technical reasons in 
relation to its oceanographic and ecological condition and to its peculiar trans- 
portation traffic the adoption of special mandatory methods for the prevention of 
sen pollution by noxious liquid substances is required. 
Special areas shall be: 
(a) The Baltic Sea Area, and 
(0) The Black Sea Area. 
(8) “Baltic Sea Area” is as defined in Regulation 10 of Annex I of the present 
Convention. 
(9) “Black Sea Area” is as defined in Regulation 10 of Annex I of the present 
Convention. 
Regulation 2 
APPLICATION 
(1) Unless expressly provided otherwise the provisions of this Annex shall 
apply to all ships carrying noxious liquid substances in bulk. 
(2) Where a cargo subject to the provisions of Annex I of the present Con- 
vention is carried in a cargo space of a chemical tanker, the appropriate require- 
ments of Annex IT of the present Convention shall also apply. 
(3) Regulation 18 of this Annex shall apply only to ships carrying substances 
which are categorized for discharge control purposes in Category A, B or C. 
Regulation 3 
CATEGORIZATION AND LISTING OF NOXIOUS LIQUID SUBSTANCES 
(1) For the purpose of the Regulations of this Annex, except Regulation 13, 
noxious liquid substances shall be divided into four categories as follows: 
(a) Category A—Noxious liquid substances which if discharged into the 
sea from tank cleaning or deballasting operations would present a major hazard 
