8.1.1 Every passenger ship regardless of size
and every cargo ship having a length, as defined in the International
Convention on Load Lines, 1966 or the Protocol of 1988 relating thereto,
as amended, as applicable, of 24 m and upwards, should be inclined
upon its completion and the elements of its stability determined.footnote
8.1.2 The Administration may allow the inclining
test of an individual ship as required by paragraph 8.1.1 to be dispensed
with provided basic stability data are available from the inclining
test of a sister ship and it is shown to the satisfaction of the Administration
that reliable stability information for the exempted ship can be obtained
from such basic data.
To be dispensed from an inclining test, the deviation of
lightship mass is not to exceed,
| for L
footnote < 50 m:
|
2% of
the lightship mass of the lead ship or as given in the information on
stability;
|
| for L > 160 m:
|
1% of
the lightship mass of the lead ship or as given in the information on
stability;
|
| for intermediate L:
|
by
linear interpolation,
|
and the deviation of the lightship's longitudinal centre
of gravity (LCG) referred to L should not be greater
than 0.5% of the lightship's LCG of the lead ship or as given in the
information on stability regardless of the ship's length.
8.1.3 The Administration may allow the inclining
test of an individual ship or class of ships especially designed for
the carriage of liquids or ore in bulk to be dispensed with when reference
to existing data for similar ships clearly indicates that due to the
ship's proportions and arrangements more than sufficient metacentric
height will be available in all probable loading conditions.
8.1.4 Where any alterations are made to a ship
so as to materially affect the stability, the ship should be re-inclined.
8.1.5 At periodic intervals not exceeding five
years, a lightweight survey should be carried out on all passenger
ships to verify any changes in lightship displacement and longitudinal
centre of gravity. The ship should 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 L is found, or anticipated.
8.1.6 The inclining test prescribed is adaptable
for ships with a length below 24 m if special precautions are taken
to ensure the accuracy of the test procedure.