A computerized version of a model for the growth of multiple stress corrosion cracks is presented. The model recognises the time dependence of crack nucleation, the dormancy of cracks at various intervals, the statistical distribution of growth rates and the coalescence of appropriately spaced cracks. These variables are interactive, so that larger crack nucleation rates enhance the chances of crack coalescence, while faster growth rates lead to the growth of individual cracks playing a larger role than coalescence in the overall cracking process. The results from simulation runs of the computerized model are in reasonable agreement with those from experiments, by comparison of the times for the longest crack to reach a critical size.