Ship Initial Inspection Checklist (Australian Maritime Safety Authority) Page 54
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6618.21 Stability:
At periodical intervals not exceeding five years,
a lightweight survey shall be carried out on all
passenger ships to verify any changes in
lightship displacement and longitudinal centre
of gravity. The ship shall be re-inclined whenever,
in comparison with the approved stability
information, a deviation from the lightship
displacement exceeding 2% or a deviation of the
longitudinal centre of gravity exceeding 1% of
Ls is found or anticipated (SOLAS Ch II-1
Reg 5.5)
On completion of loading of the ship and prior
to its departure, the master shall determine the
ship’s trim and stability and also ascertain and
record that the ship is in compliance with
stability criteria in relevant regulations. The
determination of the ship’s stability shall always
be made by calculation. The Administration may
accept the use of an electronic loading and
stability computer or equivalent means for this
purpose (SOLAS CH II-1 Reg 20):
– Check the unknown deadweight
(% and psn) and compare it with the
previous ones;
– Check the state of the pool (calculated/
actual);
– Check the trim (entered with drafts/
actual; how does it affect the GM/
unknown deadweight);
– Check the water density entered
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