Two insightful comments on this site

...[Evert Lataire, head of the Maritime Technology Division at Ghent University in Belgium] wrote his dissertation on a similar phenomenon as a ship passes close to a bank: the bank effect. The water speeds up, the pressure drops, the stern pulls into the bank and, particularly in shallow water, the bow gets pushed away. Stern one way, bow the other. A boat that had been steaming is suddenly spinning. It’s a well-identified phenomenon; in 2009 Ghent University’s Shallow Water Knowledge Centre put together a whole conference about it. Clever pilots on the Elbe, according to Lataire, will use it to shoot around a bend. However: the more water a ship displaces, the stronger the effect. And the closer the side of the hull is to the shore, the stronger the effect. The bigger the ship, the faster the bow shoots away from the bank.… [On the video,] everything happens quickly, in a way that looks a lot like the bank effect. Bow shoots away from the bank. Stern continues to hug the bank and move north. Ship spins. Bow bulb punches through the riprap.”...

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What a wonderful real world example of a single point of failure causing a huge system to collapse!