PREVIOUS | TABLE
OF CONTENTS | NEXT
APPENDIX II
STANDARD CONDITIONS OF LOADING TO BE EXAMINED
1. Loading conditions ^
The standard loading conditions referred to in 4.2 of the Recommendation
are as follows:
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
homongeneously distributed in the holds and with cargo speicifed 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 ^
- 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(1)(i) and (2)(i) of this Appendix, it
should be assumed that the ship is loaded to her subdivision loadline of
summer loadline or if intended to carry a timber deck cargo, to the
summer timber loadline 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 weight
should be assumed and stated, including the height of the 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 5 are met. In the arrival condition
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:
- 1.0 metre above deck level for passengers standing upright.
Account may be taken, if necessary, of camber and sheer of deck;
- 0,30 metre above the seat in from 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 compliance with the criteria at
5.3(a) and (b) of the Recommendation respectively. In this connexion it
is anticipated that a value higher than 4 persons per square metre will
not be necessary.
PREVIOUS | TABLE
OF CONTENTS | NEXT
|