... their advantages as offshore host facilities. They offer large and ventilated deck, topside-hull integration at quayside, and are less restrictive to the maximum payloads. However, conventional semisubmersible heave response is not suitable for TTR applications. Two state-of-the-art high performance...

... and the associated risk to cost and schedule. To explore these pre-salt complicated ultra-deepwater reservoirs usually require large drilling rig and drilling variable payload which result in very large topsides in both size and weight. Spars and TLPs are the only two proven dry tree hull forms in deep and ultra...