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.
The definition of intense is to a high degree, or a strong emotion. If you really, really really hate ice cream, this is an example of when you have an intense hatred of ice cream. A person who is always serious and talking about problems and emotional issues is an example of someone who is intense. intense.