Hello; The first clip actually shows a Chinese fishing boat (Minjinyu 5179) colliding with Japanese Coast Guard near the Senkaku Islands, an incident that caused further diplomatic dispute over the islands' sovereignty in 2010. At 2:48 You always wonder how in the immense vastness of the open sea you can make two slow ships crash like if no one could see the other ship coming. At 5:17 This ship isn’t crashing, it’s an intentional beaching. The ship is being purposely beached for scrapping. At 3:37 even though it's moving slow that ship has an crazy amount of energy behind it. At The one at 4:06 isn't crashing or sinking, it's doing what it is designed to do. It's a US navy ship called the RP FLIP. At The ship at 3:49 is a special scientific research ship know as the flip. It's designed the flip into the water from the horizontal position to the vertical position. It allows it to create a very stable platform in the water for the scientific instruments on board.