6.2 Cargo ships carrying timber deck cargoes
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Statutory Documents - IMO Publications and Documents - International Codes - 2008 IS Code – International Code on Intact Stability, 2008 - Part B – Recommendations for ships engaged in certain types of operations, certain types of ships and additional guidelines - Chapter 6 – Icing considerations - 6.2 Cargo ships carrying timber deck cargoes

6.2 Cargo ships carrying timber deck cargoes

  6.2.1 The master should establish or verify the stability of his ship for the worst service condition, having regard to the increased weight of deck cargo due to water absorption and/or ice accretion and to variations in consumables.footnote

  6.2.2 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.

 6.2.3 Allowance for ice accretion

  • .1 The ice accretion weight, w (kg/m2), may be taken as follows:

  • where:

    • ftl = timber and lashing factor = 1.2

    • L = length of ship in m

    • lFB = freeboard height in mm

    • lbow = length of bow flare region in m, to be taken as the distance from the longitudinal position at which the maximum breadth occurs on a water line located 0.5 metres below the freeboard deck at side to the foremost point of the bow at that waterline.

  • .2 The ice accretion weight, w (kg/m2), over the timber deck region should be applied to each of the load cases as illustrated in figure 1:

Figure 1 ‒ Ice accretion load cases for timber deck cargoes

Parent topic: Chapter 6 – Icing considerations
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