Wonder where they’re going to get a crane to yank on the submerged rail to right the thing when at sea.
Yes, it sure looks like the crane is yanking it. I suspect that is not really how it works but this is a poor choice of video clip that makes it look like the whole concept is bogus.
I was wondering the same thing. It sure looks like some out-of-shot device (aka a crane) is giving a little “yank” on that cable at the start of the video.