Notwithstanding the provisions of paragraph (4) of this
Regulation, the spaces referred to in subparagraphs (a) to (e) inclusive
of this paragraph shall be called excluded spaces and shall not be
included in the volume of enclosed spaces, except that any such space
which fulfils at least one of the following three conditions shall
be treated as an enclosed space:
- the space is fitted with shelves or other means for securing cargo
or stores;
- the openings are fitted with any means of closure;
- the construction provides any possibility of such openings being
closed:
-
(a)
-
(i) A space within an erection opposite an end
opening extending from deck to deck except for a curtain plate of
a depth not exceeding by more than 25 millimetres (one inch) the depth
of the adjoining deck beams, such opening having a breadth equal to
or greater than 90 per cent of the breadth of the deck at the line
of the opening of the space. This provision shall be applied so as
to exclude from the enclosed spaces only the space between the actual
end opening and a line drawn parallel to the line or face of the opening
at a distance from the opening equal to one half of the width of the
deck at the line of the opening ( Figure
1 in Appendix 1).
-
(ii) Should the width of the space because of
any arrangement except by convergence of the outside plating, become
less than 90 per cent of the breadth of the deck, only the space between
the line of the opening and a parallel line drawn through the point
where the athwartships width of the space becomes equal to, or less
than, 90 per cent of the breadth of the deck shall be excluded from
the volume of enclosed spaces (Figures 2, 3 and 4 in
Appendix 1).
-
(iii) Where an interval which is completely open
except for bulwarks or open rails separates any two spaces, the exclusion
of one or both of which is permitted under sub-paragraphs (a) (i)
and/or (a) (ii), such exclusion shall not apply if the separation
between the two spaces is less than the least half breadth of the
deck in way of the separation (Figures 5 and 6 in Appendix 1).
-
(b) A space under an overhead deck covering open
to the sea and weather, having no other connexion on the exposed sides
with the body of the ship than the stanchions necessary for its support.
In such a space, open rails or a bulwark and curtain plate may be
fitted or stanchions fitted at the ship's side, provided that the
distance between the top of the rails or the bulwark and the curtain
plate is not less than 0.75 metres (2.5 feet) or one-third of the
height of the space, whichever is the greater (Figure 7 in Appendix 1).
-
(c) A space in a side-to-side erection directly
in way of opposite side openings not less in height than 0.75 metres
(2.5 feet) or one-third of the height of the erection, whichever is
the greater. If the opening in such an erection is provided on one
side only, the space to be excluded from the volume of enclosed spaces
shall be limited inboard from the opening to a maximum of one-half
of the breadth of the deck in way of the opening (Figure 8 in Appendix 1).
-
(d) A space in an erection immediately below an
uncovered opening in the deck overhead, provided that such an opening
is exposed to the weather and the space excluded from enclosed spaces
is limited to the area of the opening (Figure
9 in Appendix 1)
-
(e) A recess in the boundary bulkhead of an erection
which is exposed to the weather and the opening of which extends from
deck to deck without means of closing, provided that the interior
width is not greater than the width at the entrance and its extension
into the erection is not greater than twice the width of its entrance
(Figure 10 in Appendix 1).