Hull Construction Regulations (C.R.C., c. 1431)

12 (1) Every ship shall be so constructed as to provide sufficient intact stability in all service conditions to enable the ship to withstand the final flooding of any one of the main compartments into which the ship is subdivided in accordance with the provisions of section 9; if two of the main compartments, being adjacent to each other, are separated by a bulkhead that is stepped, the intact stability shall be adequate to withstand the final flooding of those compartments; if the ship’s factor of subdivision is 0.5 or less, the intact stability shall be adequate to withstand the final flooding of any two of the main compartments that are adjacent to each other.

(2) For the purposes of this section, the sufficiency of the intact stability of every such ship shall be determined in accordance with the provisions of Schedule II.

(3) Every ship shall be so constructed as to keep unsymmetrical flooding when the ship is in a damaged condition at the minimum consistent with efficient arrangements; if cross-flooding fittings are provided in any such ship, the fittings and the maximum heel of the ship before equalization shall be such as will not endanger the safety of the ship.

(4) Where the margin line may become submerged during the flooding assumed for the purposes of the calculation referred to in Schedule II, the construction of the ship shall be such as will enable the master of the ship to ensure

• (a) that the maximum angle of heel during any stage of such flooding will not be such as will endanger the safety of the ship; and

• (b) that the margin line will not be submerged in the final stage of flooding.

(5) In every ship the owner shall provide a document for the use of the master of the ship containing information as to the use of any cross-flooding fittings provided in the ship.

(6) In every ship the owner shall provide a document for the use of the master of the ship containing

• (a) information necessary for the maintenance of sufficient intact stability under service conditions to enable the ship to withstand damage to the extent referred to in Schedule II; and

• (b) information as to the conditions of stability on which the calculations of heel have been based, together with the information that excessive heeling may result if the ship sustains damage when in a less favourable condition.