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

13 (1) Every part of a ship required to be watertight shall be of such strength and construction as to be capable of supporting the greater of whichever of the following pressures that the part might have to sustain in the event of damage to the ship:

• (a) the pressure of a head of water up to the margin line; or

• (b) the pressure of the maximum head of water.

(2) In every ship all tanks, including double bottoms, peak tanks, settling tanks and bunkers, forming part of the structure of the ship and used for the storage of oil fuel or other liquids, shall be of a design and construction adequate for that purpose.