1.1 For craft operating in areas where ice accretion
is likely to occur, the following icing allowance shall be made in
the stability calculations:
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(a) 30 kilogrammes per square metre on exposed
weather decks and gangways;
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(b) 7.5 kilogrammes per square metre for projected
lateral area of each side of the craft above the water plane;
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(c) the projected lateral area of discontinuous
surfaces of rail, sundry booms, spars (except masts) and rigging and
the projected lateral area of other small objects shall be computed
by increasing the total projected area of continuous surfaces by 5
per cent and the static moments of this area by 10 per cent.
1.2 For craft operating in areas where ice accretion
may be expected:
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(a) Within the areas defined in paragraph 2(a),
(c), (d) and (e) known to have icing conditions significantly different
from those in paragraph 1.1, ice accretion requirements of one-half
to twice the required allowance may be applied.
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(b) Within the area defined in paragraph 2(b),
where ice accretion in excess of twice the allowance required by paragraph
1.1 may be expected, more severe requirements than those given in
that paragraph may be applied.
1.3 Information should be provided in respect
of the assumptions made in calculating the condition of the craft
in each of the circumstances set out in this Appendix for the following:
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(a) duration of the voyage in terms of the period
spent in reaching the destination, and returning to port;
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(b) consumption rates during the voyage for fuel,
water, stores and other consumables.