I served 10 years in the merchant navy. I’ve seen a few expensive collisions, but fortunately no loss of life or injuries. One time in Alexandria, Egypt, a large wooden barge tied up to us without permission. During the night ballast water overflowed from our deck, spilled into the barge, and sank it, still tied up to us. Those mooring ropes sure were tight! A day later, the barge was gone. Presumably relfoated and towed away, I don’t know how. That first one at 0:25 where the boat is slowly sinking but then the water breaks through the cargo hatch and snaps the ship's back. Frightening how fast she goes down at that point. She hits the bottom with some speed! Amazing how many boat wrecks there are and how easy they happen when not paying attention. I am sure there are many more that is never heard about. The oceans are filled with wrecks of all kinds of things.