2.4.1 The master should ensure that the ship condition
complies with its stability booklet at all times.
2.4.2 A ship carrying timber deck cargo should
continue to comply with applicable damage stability requirements (e.g.
SOLAS regulation II-1/4.1 or
Load Lines Convention, regulation 27,
as appropriate) and, additionally, the 2008 IS
Code
(11), particularly the timber deck cargo requirements.
Since excessive GM values induce large accelerations, GM should preferably
not exceed 3% of the breadth of the vessel, as indicated in paragraph 3.7.5 of the 2008 IS Code.
2.4.3 Ballast water exchange operations should
be carried out in accordance with instructions in the Ballast Water
Management Plan, if available(12). The ballast water exchange
operation, if required, should be considered when planning the amount
of cargo to be loaded on deck.
2.4.4 According to the 2008
IS Code
(11), account may be taken of the buoyancy
of timber deck cargo when calculating stability curves, assuming that
such cargo has a permeability up to 25%. Permeability is defined as
the percentage of empty space of the volume occupied by the deck cargo.
Additional curves of stability may be required if the Administration
considers it necessary to investigate the influence of different permeabilities
and/or assumed effective height of the deck cargo. 25% permeability
corresponds to sawn wood cargo and 40%-60% permeability corresponds
to round wood cargo with increasing permeability with increasing log
diameters.