Clasification Society Rulefinder 2020 - Version 9.33 - Fix
Statutory Documents - MCA Publications - LY3 - The Large Commercial Yacht Code - 21A Accommodation and Recreational Facilities – Vessels of Less than 200GT Constructed on or After the Date of Entry into Force of MLC 2006 - 21A.4 Ventilation

21A.4 Ventilation

  21A.4.1 Effective means of ventilation should be provided to all enclosed spaces which are entered by personnel.

  21A.4.2 Mechanical ventilation should be provided to all accommodation spaces on vessels which are intended to make long international voyages or operate in tropical waters. As a minimum, mechanical ventilation should be capable of providing 6 changes of air per hour, when all access and other openings (other than ventilation intakes) to the spaces are closed.

  21A.4.3 Air conditioning - recirculation of supply air may be permitted provided that sanitary accommodation is provided with mechanical exhaust ventilation and that the fresh air content of the supply to the accommodation is not less than:-

  • (a) 25 cubic metres per hour for each person for whom accommodation is provided; or

  • (b) the total capacity of the sanitary and any other accommodation exhaust fans, excluding the galley, whichever is the greater.

  21A.4.4 Enclosed galleys are to be specially considered, and where air conditioning is not fitted should have, as a minimum, a mechanical supply of 20 fresh air changes per hour and a mechanical exhaust of 30 changes.

  21A.4.5 In spaces where sanitary facilities are provided there should be ventilation that draws from the accommodation and extracts to the open air independent of the other parts of the accommodation.

Parent topic: 21A Accommodation and Recreational Facilities – Vessels of Less than 200GT Constructed on or After the Date of Entry into Force of MLC 2006
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