1 Definitions
Clasification Society 2023 - Version 9.38
Statutory Documents - IMO Publications and Documents - Resolutions - Maritime Safety Committee - Resolution MSC.245(83) - Recommendation on a Standard Method for Evaluating Cross-flooding Arrangements - (Adopted on 12 October 2007) - Annex - Recommendation on a Standard Method for Evaluating Cross-flooding Arrangements - 1 Definitions

1 Definitions

k : Sum of friction coefficients in the considered cross-flooding arrangement.

S (m 2 ) : Cross-section area of the cross-flooding pipe or duct. If the cross-section area is not circular, then:

where:

A = actual cross-section area

p = actual cross-section perimeter

θ 0 () : Angle before commencement of cross-flooding. This assumes that the cross-flooding device is fully flooded but that no water has entered into the equalizing compartment on the opposite side of the damage (see appendix 1).

θf () : Heel angle at final equilibrium ( θ f θ).

θ () : Any angle of heel between the commencement of cross-flooding and the final equilibrium at a given time.

Wf (m3) : Volume of water which is used to bring the ship from commencement of cross-flooding θ 0 to final equilibrium θf .

Wθ (m3) : Volume of water which is used to bring the ship from any angle of heel θ to the final equilibrium θf .

H 0 (m) : Head of water before commencement of cross-flooding, with the same assumption as for θ 0 .

Hθ (m) : Head of water when any angle of heel θ is achieved.

hf (m) : Final head of water after cross-flooding (hf = 0, when the level inside the equalizing compartment is equal to the free level of the sea).


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