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Merchant Shipping Act, 1951 (Act No. 57 of 1951)

Regulations

Merchant Shipping (Crew Accommodation) Regulations, 2026

Part 1

Chapter I : General

Annexes

Annex 1 - Trunked mechanical ventilation system

 

ANNEX 1

 

TRUNKED MECHANICAL VENTILATION SYSTEMS

 

(1) Trunked mechanical ventilation systems must be capable of the standards of performance set out in the table below.

 

(2) If any storeroom is served by a fan which provides warmed air for any other space, the store-room must be provided with ventilation trunking separate from that serving such other space.

 

(3) The clear area of the exhaust openings provided in conjunction with the system must be sufficient to ensure that the velocity of air at each opening does not exceed 5 metres per second when the system is in operation.

 

(4) The system must be quiet in operation

 

(5) All trunking forming part of the system must be provided with non-return flaps where such flaps are necessary for the exclusion of effluvia and the preservation of health of the crew.

 

(6) If the system is designed to circulate heated air as the sole means of heating the crew accommodation, the system must be sub-divided into sections which can be separately controlled to the extent necessary to enable comfortable temperature to be maintained in all parts of the crew accommodation.

 

N4134 Table Ventilation (1)

N4134 Table Ventilation (2)

*Notes:

 

(a) Whatever the number of persons likely to use the room at any one time, the total volume of fresh air per minute must not be required to be such as would result in more than 20 fresh air changes per hour.
(b) Whatever the number of persons likely to use the room at any one time, the total volume of fresh air per minute must not be required to be such as would result in more than 25 fresh air changes per hour.
(c) 15, if at least two sides of the galley are exposed to the weather.
(d) The Authority may exempt any vessel from these requirements if satisfied that compliance is unnecessary by reason of the insulation of the equipment in the galley, or by reason of the size of the galley.
(e) Subject to regulation 11.