Have you ever seen the mist type of sprinklers. The water is sprayed out in a really fine mist so that when it heats up, it turns to steam and smothers the fire. There is very little water damage, because very little water is used. Sometimes they will put these systems in computer rooms. (I was told by a salesman for these systems.)
I was just watching a tv program today on behind the scenes of the QE 2 cruse boat and they use the grey water from the ship for a fire fighting mist system on the decks as well as the regular hoses. Apparently this is a new way of fighting fires on cruse boats.
