the interesting point is that, none of these three are ever possible without acting an external force like rudder action. In fact, this is not even possible without having a controlled rudder action. You know, you must have an appropriate controller, as far as only hull is concerned. That is you do not apply the rudder, you can only have this characteristic. Now, you see therefore, now the point is that you can have both the characteristic, either this or this which one would you prefer.