Yes, port cranes are much better, if they can be used. The drones are suggested as a potential alternative to handle "LA does not allow nuclear ships to dock",

Yes, port cranes are much better, if they can be used. The drones are suggested as a potential alternative to handle "LA does not allow nuclear ships to dock", so that a transfer from a nuclear- to battery-powered container ship happens in the international waters. As for can be offered: we're talking about moving a container from ship to ship which stand just hundreds meters away. The physics / math works, see my other comment.