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Chapter 42 Strength curves
for ships
Strength curves consist of ®ve curves that are closely inter-related. The curves are:
1 Weight curve ± tonnes/m run or kg/m run.
2 Buoyancy curve ± either for hogging or sagging condition ± tonnes/m
or kg/m run.
3 Load curve ± tonnes/m run or kg/m run.
4 Shear force curve ± tonnes or kg.
5 Bending moment curve ± tonnes m or kg m.
Some forms use units of MN/m run, MN and MN. m.
Buoyancy curves
A buoyancy curve shows the longitudinal distribution of buoyancy and can be constructed for any wave formation using the Bonjean Curves in the manner previously described in Chapter 41. In Figure 42.1 the buoyancy
Fig. 42.1
