3.4.5 Compliance with the provisions of paragraphs
3.4.1 to 3.4.4 should be determined by calculations which take into
consideration the proportions and design characteristics of the unit
and the arrangements and configuration of the damaged compartments.
In making these calculations, it should be assumed that the unit is
in the worst anticipated service condition as regards stability and
is floating free of mooring restraints.
3.4.6 The ability to reduce angles of inclination
by pumping out or ballasting compartments or application of mooring
forces, etc., should not be considered as justifying any relaxation
of these provisions.
3.4.7 Alternative subdivision and damage stability
criteria may be considered for approval by the Administration provided
an equivalent level of safety is maintained. In determining the acceptability
of such criteria, the Administration should consider at least the
following and take into account:
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.1 extent of damage as set out in section 3.5;
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.2 on column-stabilized units, the flooding of
any one compartment as set out in paragraph 3.4.4;
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.3 the provision of an adequate margin against
capsizing.