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Route 1 > Route 6> Route 4 > Route 2 > Route 3 > Route 5, which shows
the same results as the case where all factors are considered (see Fig. 4).
On the other hand, when considering only the qualitative factors, the
results showed that, except Route 1, all routes were ranked differently. As
shown in the Route 5(Suez) is ranked second, which implies that
it greatly surpasses the other routes in qualitative factors.
Comparison by factors