Bilge keels are passive stability systems. On commercial shipping the bilge keel is the form of a strake, or small keel or blister, running along much of the length of the hull. They are typically fitted one on each side, low down on the side of the hull, so as not to increase the draft of the vessel.
Intensity is a measure of the strength of shaking experienced in an earthquake. The Modified Mercalli Scale represents the local effect or damage caused by an earthquake; the intensity reported at different points generally decreases away from the earthquake epicenter.
Intensity It is not always enough to know the hue of a color, since a color has many different shades. Intensity is used to describe the brightness and purity of a color. When a hue is strong and bright, it is said to be high in intensity. When a color is faint, dull and gray, it is said to be low in intensity.