5.1 In passenger ships carrying more than 36 passengers
constructed on or after 1 October 1994, the opening in the cabin bulkhead
in way of the window or balcony door aperture should be boxed in with
materials which, in thickness and composition, are acceptable in the
construction of "B-15" or "B-0" divisions, as appropriate to the cabin
construction. The fire rating of the cabin should be maintained at
such details. Combustible window or sidescuttle boxes may be fitted
internally in addition to such enclosures, provided that the surface
of such a combustible material is of a low flame spread type and the
material is included in a fire load calculation. The enclosing structure
should be designed to permit small relative deflections between the
ship’s hull and the cabin structures.
5.2 Connection between a cabin and the ship’s
side, or deckhouse side at windows or sidescuttles, on cargo ships
constructed to the requirements applicable after 1 September 1984,
or passenger ships carrying not more than 36 passengers constructed
on or after 1 October 1994:
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.1 in case of method IC, the opening in the cabin
wall in way of the window or sidescuttle aperture should be boxed
in with non-combustible materials. Combustible window or sidescuttle
boxes may be fitted internally in addition to such enclosures, provided
that the surface of such a combustible material is of a low flame
spread type; and
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.2 in case of methods IIC or IIIC, no special
requirements need apply, provided the cabins are not fire rated in
order to achieve the 50 m2 boundary of SOLAS regulation
II-2/42.5.3.