ANNEX ISPECIFIC STABILITY REQUIREMENTS FOR RO-RO PASSENGER SHIPS

as referred to in Article 6

1.

1.1.

The provisions of Regulation II-1/B/8.2.3 shall be complied with when taking into account the effect of a hypothetical amount of sea water which is assumed to have accumulated on the first deck above the design waterline of the ro-ro cargo space or the special cargo space as defined in Regulation II-2/3 assumed to be damaged (hereinafter referred to as ‘the damaged ro-ro deck’). The other requirements of Regulation II-1/B/8 need not be complied with in the application of the stability standard contained in this Annex. The amount of assumed accumulated sea water shall be calculated on the basis of a water surface having a fixed height above:

  1. (a)

    the lowest point of the deck edge of the damaged compartment of the ro-ro deck; or

  2. (b)

    when the deck edge of the damaged compartment is submerged then the calculation is based on a fixed height above the still water surface at all heel and trim angles;

as follows:

  • 0,5 m if the residual freeboard (fr) is 0,3 m or less,

  • 0,0 m if the residual freeboard (fr) is 2,0 m or more, and

  • intermediate values to be determined by linear interpolation, if the residual freeboard (fr) is 0,3 m or more but less than 2,0 m,

where the residual freeboard (fr) is the minimum distance between the damaged ro-ro deck and the final waterline at the location of the damage in the damage case being considered without taking into account the effect of the volume of assumed accumulated water on the damaged ro-ro deck,