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[接上页] (2) There shall be provided in connection with every such door which is operated by power a means of giving an audible warning signal at the door itself when the door is about to be closed. The arrangement shall be such that one movement of the operating handle at the position from which the door is about to be closed will be sufficient to sound the signal and to close the door, the signal preceding the movement of the door by an interval sufficient to allow the movement of persons and articles away from the door. The signal shall continue to sound until the door is completely closed. (3) If any door required by these regulations to be watertight is not capable of being operated from a single position on the navigating bridge, means of communication by telegraph, telephone or any other direct means shall be provided whereby the officer of the watch may communicate with the person responsible for the closing of the door. (Enacted 1991) Cap 369AL reg 18 Construction of watertight doors (1) Every door required by these regulations to be watertight shall be of such design, material and construction as will maintain the integrity of the watertight bulkhead in which it is fitted. Any such door giving direct access to any space which may contain bunker coal shall, together with its frame, be made of cast or mild steel. Any such door in any other position shall, together with its frame, be made of cast or mild steel or cast iron. (2) Every sliding watertight door shall be fitted with rubbing faces of brass or similar material which may be fitted either on the door itself or on the door frame, and which, if they are less than one inch in width, shall be fitted in recesses. (3) If screw gear is used for operating such a door, the screw shall work in a nut of suitable metal which is resistant to corrosion. (4) The frame of every vertically sliding watertight door shall have no groove at the bottom thereof in which dirt may lodge. The bottom of such a frame, if it is of skeleton form, shall be so arranged that dirt cannot lodge therein. The bottom edge of every such door shall be tapered or bevelled. (5) Every vertically sliding watertight door which is operated by power shall be so designed and fitted that, if the power supply ceases, there shall be no danger of the door dropping. (6) Every horizontally sliding watertight door shall be so installed as to prevent its moving if the ship rolls, and if necessary a clip or other suitable device shall be provided for that purpose. The device shall not interfere with the closing of the door when the door is required to be closed. (7) The frame of every watertight door shall be properly fitted to the bulkhead in which the door is situated, and the jointing material between the frame and the bulkhead shall be of a type which will not deteriorate or be injured by heat. (8) Every watertight door, being a coal-bunker door, shall be provided with screens or other devices to prevent coal from interfering with its closing. (Enacted 1991) Cap 369AL reg 19 Openings in the shell plating below the margin line (1) In every ship to which this Part applies, the number of sidescuttles, scuppers, sanitary discharges and other openings in the shell below the margin line shall be the minimum which, in the opinion of the Director, is compatible with the design and proper working of the ship. (2) The arrangements for closing every such opening below the margin line shall be consistent with its intended purpose and shall be such as will ensure watertightness. Sidescuttle (3) (a) In every ship of Class I, Class II or Class II(A) the number of sidescuttles below the margin line which are capable of being opened shall be the minimum which, in the opinion of the Director, is compatible with the requirements of the proper operation of the ship. (b) In every ship of Class I, Class II or Class II(A) which is marked with a summer load line no sidescuttle shall be fitted in a between-decks such that its sill will be below a line drawn parallel to the freeboard deck at its side and which has its lower point at a distance of either - (i) 2.5% of the breadth of the ship above the summer load waterline; or (ii) 500 millimetres above the summer load waterline, whichever is the greater. Every sidescuttle in the between-decks of such a ship shall be either of a non-opening type or of an opening type fitted with locking arrangements approved by the Director.(c) If, in the between-decks of any ship of Class II(A) which is not marked with a summer load line, the sill of any sidescuttle is below a line drawn parallel to the bulkhead deck at side and which has its lowest point at a distance of 2.5% of the breadth of the ship above the deepest subdivision load waterline, every sidescuttle in that between-decks shall be of a non-opening type. If in a between-decks of such a ship all the sills of the side scuttles are above the aforesaid line, every sidescuttle in that between-decks shall be either of a non-opening type or of an opening type fitted with approved locking arrangements. No sidescuttle shall be so fitted that its sill is below the deepest subdivision load waterline. |