2.6.1 Reference to the ship's approved loading
and stability computer should be made and to the user guide provided
with this computer, if applicable.
2.6.2 A simple guidance should be given for the
manual calculation of stability, draught and trim, which may be required
for the control of loading conditions outside the scope of conditions
under 2.5 on ships not equipped with an approved loading and stability
computer, or if such computer fails. The use of suitable form sheets
is recommended for this purpose.
2.6.3 This subsection should, if appropriate,
present the following form sheets for:
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.1 compiling mass and position of consumables
and stores;
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.2 compiling mass and position of ballast;
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.3 compiling mass and position of cargo;
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.4 compiling mass and position of fishing gear;
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.5 compiling mass and position of ice accretion;
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.6 compiling displacement and position of centre
of displacement and evaluating draught and trim; and
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.7 plotting a righting lever curve and, where
appropriate, a wind heeling lever curve.
2.6.4 The form sheet under 2.6.3.3 should suit
the particular type or types of cargo the ship is intended to carry,
i.e. a different layout may be required for:
For cargoes with a structured stowage pattern like containers
or ro/ro-vehicles, separate form sheets for calculating the vertical
and the longitudinal position of the centre of cargo mass may be useful.
2.6.5 A model of the form sheets under 2.6.3.4
and 2.6.3.5 is shown in the tables 2 and 3 below.
Table 2 Form for evaluating displacement, draughts and stability
Table 3 Form for calculating and plotting the righting lever curve (the GZ-axis may
be expanded is necessary)
2.6.6 One calculated example should be provided
together with explanatory comments. A note should be given that in
calculating a loading condition, at least one (or pair of) fuel and
fresh water tank should be considered slack.
2.6.7 If the ship is equipped with an approved
installation for performing in-service inclining tests, a reference
note should be given to the operations manual of this equipment, or,
if deemed appropriate, comprehensive guidance placed in this subsection.
If, on request by the owner, the loading and stability manual
is to contain additional technical information for supporting a draught
survey or other stability management issues, appropriate guidance
and calculated examples should be given in this subsection. The Guidelines
on the management of ship's stability, to be developed by the Organization,
should be taken into account, if appropriate.