... on its bow? The leverage lies in going to the stern and pushing the tail end of the tanker to the right, in order to turn the front to the left. This, of course, is the job of the rudder. But ... fraction the size of the rudder. Its function is to make it easier to turn the rudder, which, then, makes it easier to turn the ship. The larger the ship, the more important is the trim tab ... responses from the system that offset the benefits of the intervention. We all know what it feels like to be facing compensating feedback the harder you push, the harder the system pushes back; the...