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The first obstacle that I see is that there would have to be more smaller
container ships rather than the present situation of fewer larger ones.
If you have say 1000 containers at say 8 tons each, can you imagine the weight of a single large module [container] capable of being moved
around on dry land with that weight inside it? It would have to be incredibly strong to avoid its structure deforming when it was being moved.
Having been an engineer on such vessels, I am familiar with how the
system works. At the beginning of the voyage containers are placed
so that they are easily accessed at their appropriate port of call, so you
don't have to juggle containers around too much to get at the one you want.
The vessel would also be capable of carrying far fewer containers because
of the sheer weight of the module. Also, the ship's structure would have to be massively strengthened in order to withstand the huge module moving around inside it; yet more weight. I am joking, but you'd end up with the module having half a dozen lonely containers sitting inside it.
raymo
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