Max payload of a Chinook around 11,000 kg near sea level at not high temp. (correct my number here from the wrong version of the Chinook...older versions were 4,500kg)
So, if your container is a a quarter full, sure
Shipping company should know exact weights of each container for this and billing reasons.
And this assumes that the containers are indeed loaded to their full weight capacity.
The lift capability of this setup is from the y axis. But at a reduced load. This is a physics problem.
Thou reduce weight any meaningful amount you would need to remove hundreds or even thousands of containers.
I am not even sure if anyone would be willing to fly 4 helicopters tethered to each other, but even if they do, its going to be very slow for safety reasons.
And good like finding insurance company that is willing to cover, if anything goes wrong.
And enough pilots and helicopters, to do that 24/7 for a few months
> This is a physics problem no it isn't