She is a huge steel vessel at 115 ft. (35 meters) long and accommodates 20 divers in eight twin / double bed standard cabins, and two twin bunk budget cabins. (DiveAdventuresAsia.com)
Healthiest is the old fashioned way in any of the following: a cast iron vessel, a kalai handi, clay pot or surgical grade stainless steel vessel. (vegrecipesofindia.com)
It is enclosed in a heavy steel vessel surrounded by a concrete citadel. (scientificamerican.com)