The High-Efficiency SeaStar TLP Hull

The SeaStar monocolumn hull with three radial pontoons is one of the most refined buoyant shapes ever designed. The structure is optimized to deliver the maximum payload capacity for a given hull weight. A SeaStar hull supports up to 1.8 times its own weight. By comparison a spar hull supports only about 0.6 times its weight. That means a spar hull contains about three times the steel in a SeaStar hull, which is one of the reasons SeaStar TLPs are more economical than spars.

The SeaStar's efficiency advantage over spars increases as hull size increases. Atlantia engineers have determined that the SeaStar hull has no size limitations, other than shipyard capacity.

• Field Development Scenarios
  Dry trees, wet trees, FPSOs, and more
• Anatomy of a SeaStar TLP
  A look at an installed SeaStar TLP
• Optimum Motion
  No heave, pitch or roll
• Hull Scalability
  Match deck loads up to 40,000 tons
• Hull Modularity
  Streamlined, economical fabrication
• Hull Efficiency
  Less steel, lower cost
• SeaStar TLP Tendons
  The tension in tension-leg platform
• SeaStar TLPs for Ultra-Deepwater
  Motion damping extends capability to 10,000 ft
• Installation without a Derrick Barge
  No costly heavy lift offshore
• Project Summaries
  Morpeth, Allegheny, Typhoon, Matterhorn