3.3 Tank space information
Clasification Society 2024 - Version 9.40
Statutory Documents - IMO Publications and Documents - Circulars - Maritime Safety Committee - MSC/Circular.920 – Model Loading and Stability Manual – (15 June 1999) - Annex – Model Loading and Stability Manual - Section 3 – Technical information (Category 1 and 2)1 - 3.3 Tank space information

3.3 Tank space information

  3.3.1 This subsection should present information on tank spaces intended for fuel, stores, feed water, domestic water, process liquids and liquid waste in the form of suitable tables showing:

  • .1 name and/or number of tank and designated contents;

  • .2 frame numbers at forward and aft end of tank;

  • .3 volume at 100% filling;

  • .4 density of the liquid (D);

  • .5 mass at 100% filling;

  • .6 longitudinal, transverse and vertical co-ordinate of centre of volume; and

  • .7 maximum value of moment of free surface (iB @ D).

  3.3.2 Separate summary tables may be included for:

  • .1 full consumables with waste reception tanks empty and full free surfaces for one (or pair of) fuel and fresh water tank;

  • .2 approximately half capacity of consumables and waste reception tanks;

  • .3 minimal arrival capacity of consumables with waste reception tanks full; and

  • .4 typical ballast configurations required for substantial deck cargoes or ships with sensible stability.

The results of these summary tables should be used in the appropriate loading conditions in this manual.

  3.3.3 For deep tanks, side tanks, peak tanks and other tanks with unusual shape, holding more than 0.1% of the ship's summer displacement, individual sounding tables should be provided presenting tank identification, contents, density and:

  • .1 sounding in steps of 0.1 m or less;

  • .2 contents volume at given sounding;

  • .3 longitudinal, transverse and vertical co-ordinate of centre of contents; and

  • .4 moment of free surface (iB @ D).

  3.3.4 For deep tanks, including cargo tanks, with a width of 0.6 @ B or more, separate individual tables should be provided presenting tank identification, contents, density and:

  • .1 sounding in steps of 0.1 m or less;

  • .2 contents volume at given sounding; and

  • .3 volumetric heeling moment of given volume at heeling angles from 10° to 80° at intervals of 10°.

The heeling moments of liquid volumes should be computed in accordance with 3.3 of the Intact Stability Code, as amended.


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