9 Regulation 23.9
Clasification Society 2024 - Version 9.40
Statutory Documents - IMO Publications and Documents - Resolutions - Marine Environment Protection Committee - Resolution MEPC.122(52) - Explanatory Notes on Matters Related to the Accidental Oil Outflow Performance under Regulation 23 of the Revised MARPOL Annex I - (Adopted on 15 October 2004)Amended by Resolution MEPC.146(54) - Annex - Explanatory Notes on Matters Related to the Accidental Oil Outflow Performance under Regulation 23 of the Revised MARPOL Annex I - Part B - Guidance on Individual Regulations - 9 Regulation 23.9

9 Regulation 23.9

  9.1 Compartment boundaries Yp, Ys, and z shall be developed as shown in the figures below:

Yp = the transverse distance from the port-most point on the compartment located at or below the waterline dB, to a vertical plane located BB/2 to starboard of the ship's centreline;
Ys = the transverse distance from the starboard-most point on the compartment located at or below the waterline dB, to a vertical plane located BB/2 to starboard of the ship's centreline; and
z = the minimum value of z over the length of the compartment, where, at any given longitudinal location, z is the vertical distance from the lower point of the bottom shell at that longitudinal location to the lower point of the compartment at that longitudinal location.

Ys, Yp and z for starboard cargo tank (Section looking forward)

Ys, Yp and z for centre cargo tank (Section looking forward)

Ys, Yp and z for port cargo tank (Section looking forward)
[Yp should be corrected to the intersection of dB and the port most cargo tank boundary]

Parent topic: Part B - Guidance on Individual Regulations
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