The bank effect and the big boat blocking the Suez

Brendan Greeley in the Financial Times:

The hardest thing about teaching someone how to drive a boat is that it’s not at all like driving a car. To steer a car, you turn the wheel until your nose is pointing where you want to go, then you straighten out and go there. This works because the car is attached to the road. It’s when the car itself is no longer attached to the road that things get weird. When you turn too hard, for example, the rubber in your tyres loses purchase on the street, and you are “in drift”. The normal rules no longer apply.

When you drive a boat, you are always in drift. You are attached to nothing. Stuff happens in the water beneath you that does not make any intuitive sense. Sometimes your stern (your tail) moves faster than your bow (your nose), and in a different direction. Sometimes both stern and bow are moving in the same direction at the same speed, but it’s not the direction the bow is pointed. On a boat, you don’t always go where you’re pointed.

On Wednesday, the Golden-Class container ship Ever Given made an unplanned berth in the sand on both sides of the Suez Canal, stopping trade between Europe and Asia.

More here.