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19. Each berth shall be fitted with a spring bottom or a spring mattress and with a mattress of approved material. Stuffing of straw or other material likely to harbour vermin shall not be used. 20. When one berth is placed over another a dust-proof bottom of wood, canvas or other suitable material shall be fitted beneath the spring bottom of the upper berth. 21. Sleeping rooms shall be so planned and equipped as to ensure reasonable comfort for the occupants and to facilitate tidiness. 22. The furniture shall include a clothes locker for each occupant. The clothes lockers shall be not less than 5 ft. (152 cm.) in height and of a cross-section area of 300 square inches (19-30 square decimetres) and shall be fitted with a shelf and a hasp for a padlock. The padlock shall be provided by the occupant. 23. Bach sleeping room shall be provided with a table or desk, which may be of the fixed, drop-leaf or slide-out type, and with comfortable seating accommodation as necessary. 24. The furniture shall be of smooth, hard material not liable to warp or corrode. 25. The drawer or equivalent space for each occupant shall be not less than 2 cubic feet (-056 cubic metres). 26. Sleeping rooms shall be fitted with curtains for the sidelights. 27. Sleeping rooms shall be fitted with a mirror, small cabinets for toilet requisites, a book rack and a sufficient number of coat hooks. 28. As far as practicable berthing of crew members shall be so arranged that watches are separated and that no day men share a room with watch-keepers. Article 11 1. Sufficient mess room accommodation shall be provided in all ships. 2. In ships of less than 1,000 tons separate mess room accommodation shall be provided for—(a) Master and officers ; (b) Petty officers and other ratings. 3. In ships of 1,000 tons and over, separate mess room accommodation shall be provided for — (a) Master and officers ; (b) Deck department petty officers and other ratings ; (c) Engine department petty officers and other ratings. Provided that — (i) One of the two mess rooms for the petty officers and other ratings may be allotted to the petty officers and the other to the other ratings ; (ii) A single mess room may be provided for deck and engine department petty officers and other ratings in cases in which the organizations of shipowners and/or shipowners and the recognized bona fide trade unions of seafarers concerned have expressed a preference for such an arrangement. 4. Adequate mess room accommodation shall be provided for the catering department, either by the provision of a separate mess room or by giving them the right to the use of the mess rooms assigned to other groups ; in the case of ships of 5,000 tons or over with more than five persons in the catering department consideration shall be given to the provision of a separate mess room. 5. The dimensions and equipment of each mess room shall be sufficient for the number of persons likely to use it at any one time. 6. Mess rooms shall be equipped with tables and approved seats sufficient for the number of persons likely to use them at any one time. 7. The competent authority may permit such exceptions to the foregoing rules concerning mess room accommodation as may be necessary to meet the special conditions in passenger ships. 8. Mess rooms shall be located apart from the sleeping rooms and as close as practicable to the galley.

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