9.—(1) Every portion of the ship required by these Regulations to be watertight shall be constructed in accordance with such of the requirements of Section 1 of Schedule 4 in Merchant Shipping Notice MSN 1698 (M) as apply to it.
(2) All tanks forming part of the structure of the ship and used for the storage of oil fuel or other liquids including double bottoms, peak tanks, settling tanks and bunkers shall be of a design and construction adequate for that purpose.