Off the coast of Newfoundland, the Hibernia is the world's largest oil platform in terms of weight, at a total of 1.2 million tonnes. This consists of a 37,000 tonnes integrated topsides facility mounted on a 600,000 tonne gravity base structure along with 450,000 tonnes of solid ballast which was added to secure it in place.
Inside the gravity base structure are storage tanks for 1.3 million bbl of crude oil. The shape of the base is intended to prevent damage by icebergs.
Picture added on 07 November 2006