Four Rainbow FPSO

Summary Information

Brief Description

  • The vessel has a Disconnectable Single Point Mooring System, which can quickly disengage the FPSO when faced with cyclone weather conditions
  • The vessel's name has been changed from Four Vanguard FPSO to Four Rainbow FPSO


  • Keppel: FSPO construction including fabricating and installing a comprehensive topside system, helideck and flare tower.
  • Premuda: carried out the detailed design, procurement, fabrication, tanker conversion and FPSO installation for the development
  • Dyna-Mac: Main process module, process control equipment module and riser buoy, sponson and lantern frame


  • In operation


  • 2003 - FSPO delivered
  • 2009 - The vessel was dry docked and the name changed to Four Rainbow FPSO
  • 2012 - Production ceases on Woollybutt
  • 2015 - Yinson agrees to buy half of the vessel

Other Information

  • -


  1. Premuda, Woollybutt Project Overview
  2. Keppel FPSO References
  3. International Protective Coatings FPSO References
  4. Keppel Shipyard reaffirmed as a preferred yard by Vanguard with the completion of their first FPSO
  5. Woollybutt Dry Docking Update
  6. Proposed FPSO Joint venture between FVSN and Yinson

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