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Reg XII/4: Damage Stability Requirements
New
single side skin bulk carriers (of 150 m length or above, which
are designed to carry solid bulk cargoes having a density >1.0
ton/cubic meter, constructed on/after 1 July 1999) after the flooding
of any one cargo hold.
Existing
single side skin bulk carriers (of 150 m length or above, carrying
solid bulk cargoes having a density >1.78 tons/cubic meter, constructed
before 1 July 1999) after the flooding of the foremost cargo hold,
must comply with the damage equilibrium conditions of the 1966 Load
Line Convention, as amended by Resolutions A.320(9) and A.514(13).
The flooding is limited to the cargo hold and need not involve top-side
tanks, hopper side tanks, or double bottom tanks.
The
final equilibrium waterline is to be below all deck openings, leading
to buoyant spaces, which are protected by either weathertight or
watertight covers except that bolted and gasketed manhole covers
and remotely operated sliding watertight doors may be submerged.
The ship must retain a positive GM after flooding and possess a
righting arm (GZ) curve with a range, magnitude and area beyond
equilibrium of at least 20o, 0.1 meters and 0.0175 meter-radians,
respectively.
Alternatively,
new bulk carriers, as described above, which remain afloat in a
condition of equilibrium as defined by Resolutions A.320(9) and
A.514(13) after applying the deterministic “beam/5” damage
penetration requirements under Regulation 27(7) of the 1966 Load
Line Convention, need not be re-assessed nor do they need to comply
with the probabilistic damage requirements of SOLAS B-1.
This
alternative is not permitted if the ship complies only with the
flooding requirements of item No.1.
Further,
existing bulk carriers, as described above, which remain afloat
in any satisfactory condition of equilibrium after applying the
deterministic “beam/5” damage penetration requirements
under Regulation 27(7) of the 1966 Load Line Convention, need not
be re-assessed under the proposed Flooding Stability Standard.
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