Div 4Stability in Damaged Condition.

Division 4.—Stability in Damaged Condition.

Intact stability.

16.—(1.) A ship shall be so constructed as to provide sufficient intact stability in all service conditions—

(a) to enable the ship to withstand the final flooding of any one of the main compartments into which the ship is sub-divided in accordance with regulation 7 of these Regulations;

(b) if two adjacent main compartments of the ship are separated by a bulkhead which is stepped—to enable the ship to withstand the final flooding of those compartments; and

(c) if the ship’s factor of sub-division is .5 or less—to enable the ship to withstand the final flooding of any two of the main compartments which are adjacent to each other.

(2.) For the purposes of the last preceding sub-regulation, the sufficiency of the intact stability of a ship shall be determined in accordance with the provisions of the Second Schedule.

Unsymmetrical flooding.

17.—(1.) So far as is practicable, a ship shall be so constructed as to keep at a minimum unsymmetrical flooding when the ship is in a damaged condition.

(2.) If cross-flooding fittings are provided in a ship, the fittings and the maximum heel of the ship before equalization shall be such as will not endanger the safety of the ship.

(3.) If the margin line of a ship may become submerged during the flooding assumed for the purposes of the calculation referred to in the Second Schedule, the construction of the ship shall be such that it will be possible to ensure—

(a) that the maximum angle of heel during any stage of the 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.

Information as to cross-flooding fittings and stability to be carried on ships.

18. The master or owner of a ship shall not take the ship to sea, or permit the ship to be taken to sea, unless there is provided on the ship for the use of the master, in writing—

(a) information as to the use of any cross-flooding fittings provided in the ship;

(b) such information as is necessary for the maintenance of sufficient intact stability under service conditions to enable the ship to withstand damage to the extent specified in the Second Schedule; and

(c) information as to the conditions of stability on which the calculations of heel have been based, together with the information that excessive heeling might result should the ship sustain damage under less favorable conditions.