Variation source Degrees of freedom Fcalculate
    Eh (%) Ec (%)
Replication 3 3.39ns 0.89ns
Material 2 530.13** 89.64**
Vane shape 2 1321.50** 53.97**
Material × vane shape 4 48.27** 63.57**

** Significance at 1% level
nsNon – significant
Table 1: Analysis of the variance showing the effect of material of construction and shape of vane on hulling performance.