1 Each watertight subdivision bulkhead, whether transverse or longitudinal, shall be constructed in such a manner that it shall be capable of supporting, with a proper margin of resistance, the pressure due to the maximum head of water which it might have to sustain in the event of damage to the ship but at least the pressure due to a head of water up to the margin line.
.1 Vsaka neprepustna pregrada, bodisi prečna bodisi vzdolžna, je grajena tako, da lahko z ustreznim koeficientom upornosti vzdrži največji pritisk vode, ki utegne nastati, če bi se ladja poškodovala, vendar vsaj tisti pritisk, ki ustreza višini vode do mejne ugrezne črte.