Category: OIL PLATFORMS
These informational messages enumerate the active mobile offshore drilling units (MODUs) and their locations. A MODU’s job is to drill the borehole. Once the hole is drilled, the MODU moves elsewhere to drill another hole. Thus, MODUs move relatively often. These messages keep mariners apprised of MODUs currently at sea.
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Drilling operations in Namibia starting December 17; navigation restrictions apply.
Drilling by Rhino Resources starts Dec 17, 2024, in Namibia; vessels need 2 NM wide berth due to maneuverability restrictions. Read more
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South Atlantic and Indian Ocean rig locations and exclusion zone details.
South Atlantic and Indian Ocean update: rig list, charts, 4NM exclusion zone due to unlit buoys. Cancel 005 of 2025. Read more
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Rig list update for Southern North Sea, North Sea, Norwegian Sea.
RIGLIST updated for 130500 UTC Jan 2025; includes new rig positions and cancels previous update 3/25. Read more
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Positions of offshore drilling units in Gulf of Guinea reported.
Last positions of oil rigs and drill ships in the Gulf of Guinea reported. Contact for updates as per IMO guidelines. Read more
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Warning for ship-to-ship operations south of Santos, January 25.
NAVAREA WARNING 0035/25: Ship-to-ship ops in Santos area from Jan 25, 1700 to Jan 26, 0300 UTC. Read more
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Ship-to-ship operations scheduled south of Santos on January 25.
NAVAREA WARNING 0024/25: Ship-to-ship ops south of Santos, Jan 25, involving Vigdis Knutsen, Agios Nikolas, and Amy Chouest. Read more
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List of offshore platforms and their coordinates; report any changes.
List of offshore drilling units and their coordinates; for reporting, email NAVSAFETY@NGA.MIL. Cancel 16/25. Read more
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Updated rig positions in Southern North Sea and Norwegian Sea.
RIGLIST updated: 6/25/2025. Includes positions of various drilling rigs in the North Sea and adjacent areas. Safety zones apply. Read more
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Summary of offshore drilling units’ last positions in Gulf of Guinea.
Report last known positions of mobile oil rigs/offshore units in the Gulf of Guinea. Contact for MODU reporting via email. Read more
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Drilling operations to commence December 17; manoeuvre restrictions apply.
Rhino Resources will drill in Namibia from Dec 17, 2024. Vessels need a 2 NM wide berth; operations ongoing until further notice. Read more
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Drill ship Saipem 1200 restricted; vessels must keep clear.
Drill ship Saipem 1200 is conducting operations off Angola; vessels must keep clear until further notice. Read more
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Rigs in South Atlantic and Indian Ocean sectors; exclusion zone active.
South Atlantic and Indian Ocean update: 8 rigs listed, 4NM exclusion zones due to unlit buoys. Cancel 005 of 2025. Read more
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Positions of mobile offshore drilling units as of January 15.
Mobile offshore drilling units’ positions as of January 15 include various rigs across distinct coordinates in the Gulf. Read more
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Mobile offshore drilling units’ positions as of January 25th listed.
Mobile offshore drilling units’ positions as of 151845Z JAN 25 listed various rigs with respective coordinates. Read more
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Drilling operations by Rhino Resources start December 17 in Namibian waters.
Drilling by Rhino Resources starts Dec 17, 2024, off Namibia; vessels must maintain a 2 NM berth; charts affected. Read more
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RIG update and cancellation notice for Norwegian Sea operations.
RIGLIST for Jan 25: 4 rigs in Norwegian Sea (north of 65N) with 500m safety zones. Cancel 4/25 notice. Read more
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Summary of offshore drilling units’ locations and reporting instructions.
Last known positions of mobile oil rigs in the Gulf of Guinea as of Jan 25. Report MODUs to coord.navarea2@shom.fr. Read more
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Drill ship Saipem 1200 operating, vessels must keep clear.
Drill ship Saipem 1200 is engaged in operations off Angola; all vessels must keep clear until further notice. Read more
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Drilling operations by Rhino Resources starting December 17, 2024.
Rhino Resources to begin drilling in Namibia’s South Atlantic from Dec 17, 2024. Keep 2 NM berth. Vessels restricted. Read more
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Rig locations and exclusion zone update in Southern Atlantic and Indian Ocean.
South Atlantic and Indian Ocean rig updates: 4NM exclusion zones around rigs due to unlit anchor buoys. Cancel 005 of 2025. Read more