Crane lifts shipping container stuck to trailer - GIF

[Frank S]

Do you have a picture of how the corner locks work? I've never seen them up close.

I don't think I have any pictures of any on any trailer I've owned or worked on will have to dig into my photo's files to check
But here is a web picture of one. The ones I like are the retractable so when they are not needed they drop down flush with the trailer floor
This one is fixed non retractable the kind you would find on the specialty container chassis just give the lever a 90° turn the crown rotates and locks in the socket on the container

This one is a flush mount same principle but you push it up then the stub locks in place until the container is lowered over it then rotate the lever to lock it

[Elizabeth Greene]

...
But here is a web picture of one....

My respect for crane operators just went up a notch. Setting those containers down must be a high tolerance operation. That's an impressive bit of skill.

[Frank S]

My respect for crane operators just went up a notch. Setting those containers down must be a high tolerance operation. That's an impressive bit of skill.

Some of those operators are sitting in a gondola 60 feet above the ground when they do this as well so it is not like you are standing right next to the container and can see the location, the one saving grace is the locks are somewhat self-guiding and the sockets in the corners of the containers have an inverted taper to them allowing for a little fudge room until contact is made. But they can do this in all kinds of weather even at night so yes they are not just someone walking off the street saying he is an operator They must first sit through hours upon hours of safety and training classes then work as an apprentice operator with a supervisor looking over their shoulder for a period of time.