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Appendix II
STANDARD CONDITIONS OF LOADING TO BE EXAMINED
1. Loading Conditions
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The standard loading conditions referred to in 4.2 of the Recommendation
are as follow:
(1) Passenger ship
- ship in the fully loaded departure condition with full stores
and fuel and with the full number of passengers with their luggage;
- ship in the fully loaded arrival condition, with the full
number of passengers and their luggage but with only 10 per cent
stores and fuel remaining;
- ship without cargo, but with full stores and fuel and the
full number of passengers and their luggage;
- ship in the same condition as at (iii) above but with only
10 per cent stores and fuel remaining.
(2) Cargo ship
- ship in the fully loaded departure condition with cargo
homogeneously distributed throughout all cargo spaces and with full
stores and fuel;
- ship in the fully loaded arrival condition with cargo
homogeneously distributed throughout all cargo spaces and with 10
per cent stores and fuel remaining;
- ship in ballast in the departure condition, without cargo
but with full stores and fuel;
- ship in ballast in the arrival condition, without cargo and
with 10 per cent stores and fuel remaining.
(3) Cargo ships intended to carry deck cargoes:
- ship in the fully loaded departure condition with cargo
homogeneously distributed in the holds and with cargo specified in
extension and weight on deck, with full stores and fuel;
- ship in the fully loaded arrival condition with cargo
homogeneously distributed in holds and with a cargo specified in
extension and weight on deck, with 10 per cent stores and fuel.
2. Assumptions for Calculating Loading Conditions
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- For fully loaded conditions mentioned in 1(2)(i),2(ii), 3(i) and
3(ii) of this Appendix if a dry cargo ship has tanks for liquid cargo,
the effective deadweight in the loading conditions therein described
should be distributed according to two assumptions, i.e. (i) cargo tanks
full, and (ii) cargo tanks empty.
- In conditions mentioned in 1.(I) and (2)(i)of this Appendix, it
should be assumed that the ship is loaded to her subdivision load line
or summer load line, or if intended to carry a timber deck cargo, to the
summer timber load line with water ballast tanks empty.
- If in any loading condition water ballast is necessary,
additional diagrams should be calculated taking into account the water
ballast. Its quantity and disposition should be stated.
- In all cases the cargo in holds is assumed to be fully
homogeneous unless this condition is inconsistent with the practical
service of the ship.
- In all cases when deck cargo is carried a realistic stowage
wieght should be assumed and stated, including the height of cargo.
- Where timber deck cargoes are carried, the amount of cargo and
ballast should correspond to the worst service condition in which all
the relevant stability criteria in Section 5 are met. In the arrival
conditions it should be assumed that the weight of the deck cargo has
increased by 10 per cent due to water absorption.
- When timber deck cargoes are carried and it is anticipated that
some formation of ice will take place an allowance should be made in the
arrival condition for the additional weight.
- A weight of 75 kg. should be assumed for each passenger except
that this value may be reduced to not less than 60 kg. where this can be
justified. In addition the weight and distribution of the luggage should
be determined by the Administration.
- The height of the centre of gravity for passengers should be
assumed equal to:
(i) 1.0 metre above deck level for passengers standing upright.
Account may be taken, if necessary, of camber and sheer of deck;
(ii) 0.30 metre above the seat in respect of seated passengers.
- Passengers and luggage should be considered to be in the spaces
normally at their disposal, when assessing compliance with the criteria
at 5.1 (a), (b), (c) and (d) of the Recommendation.
- Passengers without luggage should be considered as distributed
to produce the most unfavourable combination of passenger heeling moment
and/or initial metacentric height, which may be obtained in practice,
when assessing compliance with the criteria at 5,2(a) and (b) of the
Recommendation respectively. In this connection it is anticipated that a
value higher than 4 persons per square metre will not be necessary.
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