4.7 Hydrostatic particulars
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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 - 4 Category 1A - 4.7 Hydrostatic particulars

4.7 Hydrostatic particulars

 Hydrostatic particulars of the ship at the designed trim drawn in curves or tabulated to a base of mean draught measured to the bottom of the keel, over a range covering the lightship and maximum draughts.

 When tabulated, these should correspond to evenly-spaced rounded units of draught at intervals appropriate to the size and type of ship.

 If the hydrostatic particulars are presented in the form of curves their scales and accuracy should be to the satisfaction of the Administration or government recognized organization. The particulars should include:

  • .1 extreme displacement in salt water at stated density;

  • .2 immersion (displacement per unit interval of draught) ;

  • .3 moment to change trim one unit;

  • .4 transverse metacentric height;

  • .5 longitudinal metacentric height;

  • .6 vertical centre of buoyancy;

  • .7 longitudinal centre of flotation;

  • .8 longitudinal centre of buoyancy.

 Position of reference planes should be stated in the case of items specified in .4 to .8.

 Where operation of the ship results in loading conditions having significant trim, additional hydrostatic particulars should be included for a suitable range of trim.

Parent topic: 4 Category 1A
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