Clasification Society Rulefinder 2020 - Version 9.33 - Fix
Statutory Documents - MCA Publications - LY3 - The Large Commercial Yacht Code - 21B Accommodation – Vessels ≥200GT Constructed on or After the Date of Entry into Force of MLC 2006 - 21B.7 Ventilation

21B.7 Ventilation

  21B.7.1 Sleeping rooms and mess rooms should be adequately ventilated. Vessels, except those regularly operating in areas where temperate climatic conditions do not require this, should be equipped with air conditioning for seafarer accommodation, for any separate radio room and for any centralised machinery control room. All sanitary spaces should have ventilation that draws from the accommodation and extracts to the open air, independently of any other part of the accommodation.

  21B.7.2 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.

  21B.7.3 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.

Parent topic: 21B Accommodation – Vessels ≥200GT Constructed on or After the Date of Entry into Force of MLC 2006
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