2. The area under the righting lever curve (GZ curve) between the angles of heel of 30° and 40° or between 30° and θf, if this angle is less than 40°, should not be less than 0.03 metre-radians. 这一条也就是说进水角至少要大于30度对吗?因为这个船比较宽,19度左右甲板就已经上水了,是不是说进水点要做到比较高的位置了?