4.6 Lightship particulars and rolling coefficient
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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 - 4.6 Lightship particulars and rolling coefficient

4.6 Lightship particulars and rolling coefficient

 Details resulting from the inclining experiment as follows:

  • .1 lightship weight;

  • .2 longitudinal centre of gravity of lightship;

  • .3 vertical centre of gravity of lightship;

  • .4 transverse centre of gravity of lightship if necessary;

  • .5 place at and date on which inclining experiment was conducted;

  • .6 name of organization responsible for the approval of results obtained during the inclining experiment.

 The position of the reference planes should be stated for items specified in .2, .3 and .4.

 If dispensation from carrying out an including experiment has been given, the name of the authority and the reasons should be stated. If details of the lightship have been based on a sister ship, the builder and builders number of the sister ship should be stated together with items specified in .1 to .6. In such a case details corresponding to .1, .2, .4, .5 and .6 which apply to the lightship check should be given.

 If differences in values of items specified in .1 to .4 from the sister ship have been used and there are known reasons, these should be stated together with a summary showing how the adopted values have arisen.

 If permanent ballast is included in the lightship particulars, a description of such ballast should be included giving the material, its mass and distribution relative to the common reference planes.

 A sketch showing the distribution of such ballast should be included.

 If a rolling period test is required by the Administration, details of the result should be given.

Parent topic: 4 Category 1A
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