5.3 Critical stability data
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Statutory Documents - IMO Publications and Documents - Circulars - Maritime Safety Committee - MSC/Circular.456 – Guidelines for the Preparation of Intact Stability Information – (Adopted on 13 October 1986) - Annex - Guidelines for the Preparation of Intact Stability Information - 5 Category 2 - 5.3 Critical stability data

5.3 Critical stability data

 A pre-calculated table and/or diagram from which the master can determine if the stability of the ship is acceptable for a given loading condition under the governing stability criteria.

 This information should show, for example, the maximum allowable height of the loaded ship's centre of gravity or the maximum allowable static (displacement or deadweight) moment about the bottom of keel as a function of draught or displacement.

 The form of the data and the parameters used should be to the satisfaction of the Administration taking into account the stability criteria adopted, the ship type and the service intended.

 The data should extend from the lightest anticipated sea-going draught to the minimum freeboard assigned.

 If two or more independent governing stability parameters or conditions of service are included in the stability criteria the information should provide for any combination.

 Where the operating trim or the form and arrangement of the ship are such that a change in trim has an appreciable effect on righting arms additional pre-calculated tables/diagrams should be included for a suitable range of trim.

Parent topic: 5 Category 2
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