Regulation 7

Crew accommodation shall be adequately ventilated.

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.

Ships other than new MLC ships regularly engaged on voyages in the tropics and the Persian Gulf shall be equipped with both mechanical means of ventilation and electric fans, except that one only of these means need be adopted in spaces where this ensures satisfactory ventilation.

Except for those ships normally employed in the cold waters of the northern or southern hemispheres, ships other than new MLC ships engaged outside the tropics shall be equipped with either mechanical means of ventilation or electric fans.

All new MLC ships, except for ships normally employed in the cold waters of the northern or southern hemispheres, shall be equipped with air-conditioning in all sleeping rooms, separate radio rooms and centralised machinery rooms.

Power for the operation of the aids to the ventilation required by paragraphs (3), (4) and (5) shall, when practicable, be available at all times when the crew is living or working on board and when conditions so require.

Air-conditioning systems provided in all new MLC ships 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 and shall not produce excessive noise or vibration.