A—7a

Article 7 1. Sleeping rooms and mess rooms shall be adequately ventilated. 2. The system of ventilation shall be controlled so as to maintain the air in a satisfactory condition and to ensure a sufficiency of air movement in all conditions of weather and climate. . 3. Ships regularly engaged on voyages in the tropics and the Persian Gull shall be equipped with mechanical means of ventilation. 4. Ships engaged outside the tropics shall be equipped with either mechanical means of ventilation or electric fans. The competent authority may -exempt ships normally employed in the cold waters of the northern or southern hemispheres from this requirement. v 5. Power for the operation of the aids to ventilation required by paragraphs 6 and 4 shall, when practicable, be available at all times when the crew is living or working on board and conditions so require. Article 8 1. An adequate system of heating the crew accommodation shall be provided except in ships engaged exclusively in voyages in the tropics and the Persian Gulf. 2. The heating system shall, when practicable, be in operation at all times when the crew is living or working on board and conditions require its use. 3. In all ships in which a heating system is required, the heating shall be by means of steam, hot water, warm air or electricity. 4. In any ships in which heating is provided by a stove, measures shall be taken to ensure that the stove is of sufficient size and is properly installed and guarded and that the air is not fouled. 5. The heating system shall be capable of maintaining the temperature in crew accommodation at a satisfactory level under normal conditions of weather and climate likely to be met with on service \ the competent authority shall prescribe the standard to be provided. 6. Radiators and other heating apparatus shall be so placed and, where necessary, shielded, as to avoid risk of fire or danger or discomfort to the occupants. Article 9 1. Subject to such special arrangements as may be permitted in passenger ships, sleeping rooms and mess rooms shall be properly lighted by natural light and shall be provided with adequate artificial light. 2. All crew spaces shall be adequately lighted. The minimum standard for natural lighting in living rooms shall be such as to permit a person with normal vision to read on a clear day an ordinary newspaper in any part of the space available for free movement. When it is not possible to provide adequate natural lighting, artificial lighting of the above minimum standard shall be provided. 3. In all ships electric lights shall be provided in the crew accommodation. If there are not two independent sources of electricity for lighting, additional lighting shall be provided by properly constructed lamps or lighting apparatus for emergency use. 4. Artificial lighting shall be so disposed as to give the maximum benefit to the occupants of the room. 5. In sleeping rooms an electric reading lamp shall be installed at the head of each berth. Article 10 1. Sleeping rooms shall be situated above the load line amidships or aft. 2. In exceptional cases the competent authority may, if the size, type or intended service of the ship render any other location unreasonable or impracticable, permit the location of sleeping rooms in the fore part of the ship, but in no case forward of the collision bulkhead.

31