6 Regulation 23.5.1
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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 - 6 Regulation 23.5.1

6 Regulation 23.5.1

  6.1 For an oil tanker that is symmetrical about the ship's centreline, the mean oil outflow values OMS and OMB are calculated assuming damage to one side of the ship only. For designs with asymmetrical cargo tank arrangements, calculations should be performed from both sides and the results averaged.

  6.2 For side damage, the probabilities of damage are derived from five dimensions as defined in paragraph 8.2. These are: Xa, Xf, Zl, Zu, and y. Xa, Xf, Zl, and Zu will have the same values, for both port and starboard damage. For damage from the starboard side, y is measured inboard from the starboard side shell. For damage from the port side, y is measured inboard from the port side shell. This will result in two outflow values for side damage, OMS-port and OMS-starboard. Averaging these values yields the overall mean outflow from side damage.

(6.2)
Parent topic: Part B - Guidance on Individual Regulations
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