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.
Exercise Intensity Levels. How to measure exercise intensity. Intensity is the amount of physical power, expressed as a percentage of maximum, the body uses in performing an activity. For example, it defines how hard the body has to work to walk a mile in 20 minutes or to play a game of tag.