OCSNCOE Unit Emblem (silhouettes of a self-elevating MODU, an OSV and an offshore wind turbine over a silhouette of the United States with the U.S. Coast Guard mark (i.e., racing stripe) in the background).Outer Continental Shelf National Center of Expertise (OCSNCOE)

JACK ST. MALO during offshore construction with attending OSV and Floatel VICTORY. C-ENFORCER underway with water cannons flowing. SEVAN LOUISIANA underway when initially entering the U.S. Gulf of Mexico. Platform GINA off the California coast. Block Island windfarm with attending CTV. SPARTAN 151 dockside in Seward, AK.

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Floating OCS Facilities on the U.S. OCS

The table below summarizes the current (and past) FOFs on the U.S. OCS. Additional publicly-available data related to each facility can be found by searching BSEE's Platform Structures Online Query and the USCG's Port State Information Exchange (PSIX). Red font denotes facilities that have been removed, magenta denotes facilities that are in the decommissioning/removal process and green denotes facilities that are under construction. See the Types of FOFs page for additional information on the hull types.

Facility Name OCS Block Owner/Operator Install Date (BSEE data) Hull Type 2022 Vessel Determination
Allegheny TLP GC 254 Eni US Operating Co. Inc. August 19, 1999 TLP (SeaStar) Non-Vessel
Anchor FPU GC 763/807 Chevron USA Inc. June 18, 2023 Semi-Submersible Non-Vessel
Appomattox FPS MC 437 Shell Offshore Inc. June 7, 2018 Semi-Submersible Non-Vessel
Argos FPU GC 780 BP Exploration & Production, Inc. January 20, 2023 Semi-Submersible Non-Vessel
Atlantis PQ GC 787 BP Exploration & Production, Inc. January 16, 2007 Semi-Submersible Non-Vessel
Big Foot TLP WR 29 Chevron USA Inc. February 19, 2018 TLP Non-Vessel
Blind Faith MC 650 Chevron USA Inc. April 18, 2008 Semi-Submersible Non-Vessel
Boomvang Spar EB 643 Anadarko Petroleum Corporation April 28, 2002 Truss Spar Non-Vessel
Brutus TLP GC 158 EnVen Energy Ventures, LLC (Prior Owner: Shell) June 20, 2001 TLP Non-Vessel
Constitution Spar GC 680 Anadarko Petroleum Corporation December 27, 2005 Truss Spar Non-Vessel
Delta House MC 254 Murphy Exploration & Production Company (Prior Owner: LLOG) October 8, 2014 Semi-Submersible Non-Vessel
Devils Tower Spar MC 773 Eni US Operating Co. Inc. February 19, 2004 Truss Spar Non-Vessel
FPS Auger GB 426 Shell Offshore Inc. February 5, 1994 TLP  Non-Vessel
FPS Neptune VK 826 Fieldwood Energy LLC (Prior Owners: Noble Energy, Anadarko Petroleum Corporation, Kerr-McGee, Oryx) November 19, 1996 - Removed 2023 (Hull reefed at VK 737) Classic Spar No determination issued; would have been considered a non-vessel IAW current policy.
FPS Ram-Powell VK 956 Talos Petroleum LLC (Prior Owner: Shell) May 21, 1997 TLP Non-Vessel
Front Runner Spar GC 338 Murphy Exploration & Production Company, USA August 2, 2004 Truss Spar Non-Vessel
Genesis Spar GC 205 Chevron USA Inc. July 21, 1998; ceased operations Oct2020 - Removed 2024 (Hull reefed at GC 6) Classic Spar No determination issued; would have been considered a non-vessel IAW current policy.
Gulfstar 1 MC 724 Hess Corporation March 9, 2014 Truss Spar Non-Vessel
Gunnison Spar GB 668 Anadarko Petroleum Corporation December 9, 2003 Truss Spar Non-Vessel
Heidelberg Spar GC 860 Anadarko Petroleum Corporation January 7, 2016 Truss Spar Non-Vessel
Holstein Spar GC 645 Anadarko Petroleum Corporation (Prior Owners: BP, Plains Exploration & Production Co.) June 3, 2004 Truss Spar Non-Vessel
Hoover Diana AC 25 Exxon Mobil Production Company April 25, 2000 Truss Spar  Non-Vessel
Horn Mountain Spar MC 127 Anadarko Petroleum Corporation (Prior Owners: BP, Plains Exploration & Production Co.) June 29, 2002 Truss Spar Non-Vessel
Independence Hub MC 920 Anadarko Petroleum Corporation June 11, 2007 - Removed December 4, 2019 (purchased by LLOG/'rebuilt' as Salamanca) Semi-Submersible No determination issued; would have been considered a non-vessel IAW current policy.
ATP Innovator (ex. Rowan Midland; MODU converted to FPU) MC 711 ATP Oil & Gas March 8, 2006 - Removed February 3, 2014 Semi-Submersible No determination issued; likely to have been considered a non-vessel IAW current policy.
Jack St. Malo WR 718 Chevron USA Inc. January 5, 2014 Semi-Submersible Non-Vessel
Jolliet TLWP GC 184 MC Offshore Petroleum, LLC January 1, 1989 TLP Non-Vessel
Kaskida KC BP Exploration & Production, Inc. Under construction... Semi-Submersible Determination pending...
King's Quay GC 433 Murphy Exploration & Production Corporation, USA February 22, 2022 Semi-Submersible Non-Vessel
Lucius Spar KC 875 Anadarko Petroleum Corporation March 17, 2014 Truss Spar Non-Vessel
Mad Dog Spar GC 782 BP Exploration & Production, Inc. July 30, 2004 Truss Spar Non-Vessel
Magnolia TLP GB 783 W&T Offshore, Inc. August 5, 2004 TLP Non-Vessel
Marco Polo TLP GC 608 Anadarko Petroleum Corporation January 24, 2004 TLP (MOSES) Non-Vessel
Marlin TLP VK 915 Anadarko Petroleum Corporation (Prior Owners: BP, Plains Exploration & Production Co.) July 27, 1999 TLP Non-Vessel
Mars TLP MC 807A Shell Offshore Inc. July 18, 1996 TLP Non-Vessel
Matterhorn TLP MC 243 W&T Energy VI, LLC August 3, 2003 TLP (SeaStar) Non-Vessel
Medusa Spar MC 582 Murphy Exploration & Production Company, USA August 8, 2003 Truss Spar Non-Vessel
Na Kika FPS MC 474 BP Exploration & Production, Inc. August 2, 2003 Semi-Submersible Non-Vessel
Nansen Spar EB 602 Anadarko Petroleum Corporation November 10, 2001 Truss Spar Non-Vessel
Neptune TLP GC 613 EnVen Energy Ventures, LLC October 16, 2007 TLP (SeaStar) Non-Vessel
Olympus TLP MC 807B Shell Offshore Inc. July 30, 2013 TLP Non-Vessel
Opti-Ex (aka Who Dat) MC 547 LLOG Exploration Offshore, LLC July 12, 2011 Semi-Submersible Non-Vessel
Perdido AC 857 Shell Offshore Inc. November 12, 2009 Truss Spar Non-Vessel
Red Hawk GB 876 Anadarko Petroleum Corporation April 2, 2004 - Removed September 20, 2014 (Hull reefed at EI 384) Cell Spar No determination issued; would have been considered a non-vessel IAW current policy.
Prince TLP EW 1003 EnVen Energy Ventures, LLC July 18, 2001 TLP (MOSES) Non-Vessel
Salamanca (ex. Independence Hub; repurposed/modified for new location/reservoirs) KC 689 LLOG Exploration Offshore, LLC Under construction/modification... Semi-Submersible Non-Vessel
Shenandoah WR 52 BOE Exploration & Production Under construction... Semi-Submersible  
Shenzi TLP GC 653 BHP Billiton Petroleum (GOM) Inc. August 25, 2008 TLP (MOSES) Non-Vessel
Sir Douglas Morpeth EW 921 Eni US Operating Co. Inc. August 10, 1998 - Removed April 26, 2021 TLP (SeaStar) No determination issued; would have been considered a non-vessel IAW current policy.
Sparta FPS GB 959 Shell Offshore Inc. Under construction... Semi-Submersible Determination pending...
Stampede TLP GC 468 Hess Corporation May 29, 2017 TLP Non-Vessel
Tahiti Spar GC 641 Chevron USA Inc. August 8, 2008 Truss Spar Non-Vessel
Thunder Hawk MC 736 QuarterNorth Energy LLC (Prior Operators: Fieldwood Energy, Noble Energy, Murphy); Owned by SBM Offshore August 7, 2009 Semi-Submersible Non-Vessel
Thunder Horse MC 778 BP Exploration & Production, Inc. April 1, 2005 Semi-Submersible Non-Vessel
Titan MC 941 Equinor USA E&P Inc. (Prior Owner: ATP Oil & Gas) March 6, 2010 Semi-Submersible (MinDOC) Non-Vessel
Typhoon GC 237 Chevron USA Inc. July 10, 2001 - Capsized during Hurricane Rita in 2005; (Reefed at EI 367 during 2006) TLP (SeaStar) No determination issued; would have been considered a non-vessel IAW current policy.
Ursa TLP MC 809 Shell Offshore Inc. December 28, 1998 TLP Non-Vessel
Vito MC 939 Shell Offshore Inc. October 29, 2022 Semi-Submersible Non-Vessel
Whale FPS AC 773 Shell Offshore Inc. February 25, 2024 Semi-Submersible Non-Vessel
Additional floating production units that meet the regulatory definition of an "OCS facility", but may not meet the regulatory definition of a "floating OCS facility":
BW Pioneer (ex. Sarasota, Tsunami, Minerva Concert, Stena Concert; tankship converted to FPSO) WR 249 Murphy Exploration & Production Company, USA; Vessel owned by BW Offshore June 30, 2011 FPSO; moored to a disconnectable production buoy Vessel (Singapore flagged)
Helix Producer I (ex. Karl Carstens; train ferry converted to FPS) GC 237 Vessel owned by Kommandor LLC and operated by Helix Energy Solutions Group, Inc.; OCS lease & associated production managed by Talos ERT LLC June 11, 2009; producing the field previously served by Chevron's Typhoon Floating Production System (no storage capabilities); connected to a disconnectable production/export buoy; maintains position via dynamic positioning Vessel (Bahamas flagged)
Turritella (ex. Captain X. Kyriakou; tankship converted to FPSO) WR 551 Shell Offshore Inc. (Prior vessel owner/operator: SBM Offshore) January 1, 2016 FPSO; moored to a disconnectable production buoy Vessel (Bahamas flagged)

 

Updated 28Aug2024.