But you'd either need ports at all the locations you need to send supplies, or you'd need something like this "land train"[*]. And if you have that, why bother

But you'd either need ports at all the locations you need to send supplies, or you'd need something like this "land train"[*]. And if you have that, why bother with the complexity, difficulty, and time needed to build ports? [*] I'm sure that name makes sense to someone, but not to me...