I have wondered if you could tow a barge with the processing, then incentivize the box transports to pull the barge along behind. There are challenges with seas

I have wondered if you could tow a barge with the processing, then incentivize the box transports to pull the barge along behind. There are challenges with seas and storms and things like the tow line breaking. I read a proposal for an air extraction system that fit in a container, so that you could stack a few on a container ship and they would process air as they went from port to port. Typically power challenged though (you want some clean energy powering them). Nuclear powered container ships would be good for this.