They will fail not because it cannot be done, but no union member will load these ships nor unload them. The real problem is not going to be technical, it will be political.

The only way it could be done now is create non union ports on both ends of the route and never have your ships dock at unionised ports, where they would be blacklisted for ever going to a non unionised port and might even suffer sabotage.

Stevedore unions around the world cooperate with each other and are all corrupt, have rampart theft and use violence to bully members and non members into submission. You seen The Wire?

I worked in the shipping industry. Never again.