Clasification Society Rulefinder 2020 - Version 9.33 - Fix
Common Structural Rules - Common Structural Rules for Bulk Carriers and Oil Tankers, January 2019 - Part 1 General Hull Requirements - Chapter 4 Loads - Appendix 1 Hold Mass Curves - 1 General

1 General

1.1 Application

1.1.1 The requirements of this appendix apply to bulk carriers of 150 m in length L and above.

1.1.2 This appendix describes the procedure to be used for determination of:
  • The maximum and minimum mass of cargo in each cargo hold as a function of the draught at mid-hold position of cargo hold.
  • The maximum and minimum mass of cargo in any two adjacent holds as a function of the draught at mid-length of these two adjacent cargo holds.

1.1.3 General

The cargo mass curves of single cargo hold or of two adjacent cargo holds in seagoing and harbour conditions as defined in [2] and [3] are based on the loading conditions considered in Ch 4, Sec 8, [4.2]. However if the ship structure is checked for more severe loading conditions than the ones considered in Ch 4, Sec 8, [4.2.7], the minimum required cargo mass and the maximum allowable cargo mass can be based on those corresponding loading conditions.

1.1.4 Loading/unloading conditions in harbour

For any bulk carrier, the maximum permissible cargo mass and the minimum required cargo mass of single cargo hold or of two adjacent cargo holds, corresponding to draught for loading/unloading conditions in harbour may be increased or decreased by 15% of the maximum permissible mass at the maximum draught for the cargo hold in seagoing condition. However, maximum permissible mass is in no case to be greater than the maximum permissible cargo mass at designed maximum load draught for each cargo hold.

1.1.5 Maximum and minimum permissible mass expression

The maximum and minimum permissible mass in seagoing conditions, (WmaxS(Ti), WminS(Ti)) and in harbour condition ((WmaxH(Ti), WminH(Ti)) at various draughts (Ti) is obtained, in t, by the following formulae given in tables of [2] and [3] for the followings.:
  • BC-A ship not having {No MP} notation assigned,
  • BC-A ship having {No MP} notation assigned,
  • BC-B and BC-C ships not having {No MP} notation assigned,
  • BC-B and BC-C ships having {No MP} notation assigned,

Examples for mass curve of loaded cargo holds and cargo hold which can be empty at the maximum draught for BC-A ships not having {No MP} assigned are shown in figures of the above mentioned tables.

Parent topic: Appendix 1 Hold Mass Curves
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