40.1 Any ballast carried in localized inboard
extensions, indentations or recesses of the double hull, such as bulkhead
stools, should be excess ballast above the minimum requirement for
segregated ballast capacity according to regulation 18.
40.2 In calculating the aggregate capacity under regulation 19.3.4, the following
should be taken into account:
-
.1 the capacity of engine-room ballast tanks should
be excluded from the aggregate capacity of ballast tanks;
-
.2 the capacity of ballast tank located inboard
of double hull should be excluded from the aggregate capacity of ballast
tanks (see figure 1).
-
.3 spaces such as void spaces located in the double
hull within the cargo tank length should be included in the aggregate
capacity of ballast tanks (see figure 2).
Figure 1
Figure 2