It doesn’t happen at the docks. They get loaded into shipping containers on trucks and on freight trains, so by the time it gets to the ship, it’s well hidden. And they don’t get on a ship bound for Russia either. The destination is more likely China or the Baltics.

Docks don’t have time to x-ray everything so some always get through, especially the ones where well-practised crime has generated authentic looking documentation for what’s supposed to be in the container.