As wind begins to blow more, I will have higher waves also longer waves. So, it will shift on this side and area will also become more; this will happen. This has a very significant effect on the ship motion, we will find out. See small boats are operating in very moderate weather, but they are operating this small sea state. What happens when the typhoon starts to blow, you will have more number of 200-meter long wave or 300- meter long wave, very long wave. In one case, you will have more number of small waves; another case you will find much more number of longer waves, you see. So these are the two extremes and we have to… typically that happens… we will discuss more of that on next class.