The perfectly scalable SeaStar TLP hull

The SeaStar TLP design can be scaled up for larger payloads, without sacrificing economy, ease of fabrication, or optimum operating characteristics. Payload capacity is a function of hull displacement, which is adjusted by changing hull column diameter, submerged column height (draft), and/or pontoon size. Capacity for a given hull diameter is easily increased by adjusting the hull draft, without altering the basic structural elements or the way they interact. As a result, adding incremental changes to the payload mission of the TLP can be accommodated efficiently and economically.

The first three SeaStar TLPs installed have 58-ft- diameter (17.7 m) columns and support payloads in the range of 4,000 to 5,000 tons. The 84-ft-diameter (25.6 m) dry-tree SeaStar TLP (Matterhorn) is significantly larger, with an 11,000-ton payload. Detailed engineering has been completed on Generation III SeaStar TLPs for payloads up to 40,000 tons.

• 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