Barges loaded with logs tip over - GIF

[Wildwilly]

Physics caused it.

Difficult to get good measurements from the video, but it appears to me the load is not centered on the barge. Perhaps the load was offset to starboard on the front barge.

In the image below, it appears the load is offset to port. With the center of rotation so low on the narrow barge, any list to port greatly exaggerates the imbalance. Once it gets to far, there is no saving it.

Clicking the image will enlarge it

From what I have studied in the past is that logs that are transported by loading onto a ship or barge, the transporter is designed to unload that way. That's why one barge tipped one way & the next one the other way. I would cause too many problems for all to unload on one side.