The video shows an extremely strange incident wherein the barge being launched pulls a bulldozer along with it into the water. The bulldozer, which was tied to the barge, eventually sinks and disappears.
It seems that the someone forgot to disengage the bulldozer’s ropes from the barge.
Unless the dozer was expected to work underwater (which it obviously cannot), it shouldn’t have been allowed to stay hooked to the launching barge. Of course, this seems to be a serious mistake on someone’s part.
Do you have any more information about the video? Let us know in the comments below.