Surveys

NAVAREA IV mobile offshore drilling units positions at 011330Z may: a. agosto 12 19-23.0N 092-03.1W

Gulf of Mexico · NAVAREA IV 489/24

What this record establishes

Archived notice · 2024-05-08 16:53Z

This notice comes from the historical archive. Its archived status does not establish when or how the reported situation ended.

Source and dates
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · SFH 465/24 011401Z MAY 24.. Issued 2024-05-01 14:19Z. First collected 2026-08-17 13:38Z; last seen in collection 2026-08-17 15:46Z. Collection dates record ingestion, not a new incident or a fresh field observation.
Location covered
Gulf of Mexico. The parsed report position is 21.783, -85.523. It is a position in the source message, not a live location. Check the original wording for limits and qualifications.

Related notices and cancellation links

Current notices and reporting history in the Gulf of Mexico →

issued
2024-05-01 14:19Z
status
Archived notice
authority
SFH 465/24 011401Z MAY 24.
NAVAREA
NAVAREA IV
issued by
SFH
sea
Gulf of Mexico
position
21.783, -85.523
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

1. NAVAREA IV MOBILE OFFSHORE DRILLING UNITS
   POSITIONS AT 011330Z MAY:
   A. AGOSTO 12 19-23.0N 092-03.1W.
   B. ARGOS 27-10.4N 090-22.1W.
   C. ATLANTIS 19-26.5N 092-01.9W.
   D. BLAKE 1007 27-22.0N 094-28.1W.
   E. BORR HILD 19-02.6N 092-26.6W.
   F. BORR RAN 19-00.2N 091-58.4W.
   G. CAMPECHE 18-39.8N 092-51.3W.
   H. CHIHUAHUA 19-30.1N 091-59.3W.
   I. CME I 18-22.5N 093-49.0W.
   J. CME II 18-39.4N 093-20.2W.
   K. COATZACOALCOS 19-30.4N 092-00.0W.
   L. (NEW POSITION) DEEPWATER ASGARD
      28-15.0N 088-52.4W.
   M. DEEPWATER ATLAS 26-54.2N 091-35.6W.
   N. DEEPWATER CONQUEROR 27-09.7N 091-14.9W.
   O. DEEPWATER INVICTUS 28-44.2N 088-20.3W.
   P. DEEPWATER PONTUS 28-01.7N 089-09.7W.
   Q. DEEPWATER POSEIDON 28-36.5N 088-02.4W.
   R. DEEPWATER PROTEUS 28-09.6N 089-07.0W.
   S. DEEPWATER THALASSA 26-12.2N 094-44.6W.
   T. DEEPWATER TITAN 27-09.7N 091-12.0W.
   U. DEVELOPMENT DRILLER III 12-26.5N 070-06.5W.
   V. ENTERPRISE 351 28-15.3N 091-26.0W.
   W. FRIDA I 19-36.1N 092-31.6W.
   X. GALAR 18-30.5N 093-26.5W.
   Y. GERSEMI 18-29.1N 093-21.6W.
   Z. GRID 18-44.8N 093-07.4W.
   AA. H&P RIG 201 28-09.4N 089-13.0W.
   AB. H&P RIG 205 26-06.6N 094-53.1W.
   AC. (NEW POSITION) HELIX Q4000
       27-27.1N 090-16.1W.
   AD. (NEW POSITION) HELIX Q5000
       26-06.9N 094-53.2W.
   AE. HOLSTEIN SPAR 27-19.6N 090-31.0W.
   AF. INDEPENDENCIA 2 12-28.2N 070-07.2W.
   AG. IOLAIR 19-35.8N 092-13.4W.
   AH. JINDAL PIONEER 18-20.2N 093-52.3W.
   AI. JOE DOUGLAS 09-59.7N 060-18.4W.
   AJ. LA COVADONGA 18-30.3N 093-15.7W.
   AK. LA SANTA MARIA 19-30.5N 092-04.3W.
   AL. LIZA DESTINY 08-00.6N 056-59.5W.
   AM. LIZA UNITY 08-00.5N 056-54.8W.
   AN. MAD DOG 27-11.6N 090-16.5W.
   AO. NABORS MODS 140 28-12.4N 088-46.4W.
   AP. NABORS MODS 200 28-06.2N 090-12.1W.
   AQ. NABORS MODS 400 26-55.7N 090-31.4W.
   AR. NEPTUNO 19-34.0N 092-14.0W.
   AS. NFE PIONEER III 22-39.2N 097-40.8W.
   AT. (NEW POSITION) NOBLE BOB DOUGLAS
       07-55.0N 056-43.0W.
   AU. NOBLE DISCOVERER 11-32.7N 073-34.5W.
   AV. (NEW POSITION) NOBLE DON TAYLOR
       07-57.0N 056-41.0W.
   AW. NOBLE GLOBETROTTER I 27-52.0N 092-01.3W.
   AX. NOBLE GLOBETROTTER II 28-09.6N 089-07.1W.
   AY. (NEW POSITION) NOBLE SAM CROFT
       08-02.0N 056-50.0W.
   AZ. NOBLE STANLEY LAFOSSE 27-33.7N 090-06.3W.
   AAA. NOBLE TOM MADDEN 08-09.7N 056-58.2W.
   AAB. (NEW POSITION) NOBLE VALIANT
        28-28.2N 088-43.7W.
   AAC. NOBLE VOYAGER 07-22.5N 055-32.9W.
   AAD. OCEAN BLACKHAWK 28-57.4N 087-59.6W.
   AAE. OCEAN BLACKHORNET 28-02.0N 088-22.0W.
   AAF. OCEAN BLACKLION 27-08.9N 090-19.4W.
   AAG. ODIN 18-18.3N 094-05.3W.
   AAH. OLYMPUS N88 28-09.6N 089-12.8W.
   AAI. PAPALOAPAN 19-29.0N 092-01.6W.
   AAJ. PROSPERITY 08-11.7N 057-00.1W.
   AAK. RALPH COFFMAN 18-20.4N 093-53.6W.
   AAL. SANDUNGA 19-30.9N 091-58.9W.
   AAM. (NEW POSITION) SEVAN LOUISIANA
        27-58.3N 090-09.4W.
   AAN. STENA CARRON 08-36.1N 057-17.2W.
   AAO. STENA DRILLMAX 07-57.8N 056-50.8W.
   AAP. (NEW RIG) STENA EVOLUTION
        28-20.7N 087-56.5W.
   AAQ. (NEW POSITION) STENA ICEMAX
        28-11.8N 088-36.4W.
   AAR. (NEW POSITION) THUNDERHORSE PDQ
        28-12.7N 088-28.7W.
   AAS. TUXPAN 18-45.8N 091-45.7W.
   AAT. UXPANAPA 18-51.4N 092-28.1W.
   AAU. VALARIS 249 10-05.3N 060-35.4W.
   AAV. VALARIS DPS-5 29-17.4N 088-00.3W.
   AAW. VALARIS DS-16 28-54.6N 088-05.7W.
   AAX. (NEW POSITION) VALARIS DS-18
        28-23.2N 088-14.1W.
   AAY. VALARIS EXL II 27-51.1N 096-45.5W.
   AAZ. WELL SERVICES RIG 50 10-40.6N 061-38.7W.
   AAAA. WEST COURAGEOUS 19-35.1N 092-13.7W.
   AAAB. WEST DEFENDER 18-40.4N 092-52.4W.
   AAAC. WEST INTREPID 19-36.5N 092-15.5W.
   AAAD. WEST NEPTUNE 26-12.8N 092-08.1W.
   AAAE. (NEW POSITION) WEST VELA
         28-08.8N 089-51.3W.
   AAAF. WFD 250 28-31.2N 091-31.6W.
   AAAG. WFD 400 28-17.0N 091-40.4W.
2. TO REPORT A MOBILE OFFSHORE DRILLING UNIT AS
   PER IMO RESOLUTION A.1023(26), PARAGRAPH 11.5.1,
   CONTACT NAVSAFETY@NGA.MIL SUBJ: MODU REPORT.
3. CANCEL NAVAREA IV 465/24.

Reading this warning

NAVAREA
One of the 21 ocean areas of the World-Wide Navigational Warning Service, each with a coordinator that broadcasts long-range warnings.
Drilling rig / MODU
A mobile offshore drilling unit — jack-up, semi-submersible or drillship — has moved into position, with anchors and a safety zone around it.
Date-time group (DTG)
A compact UTC timestamp — day, hour and minute followed by Z — such as 201500Z for the 20th at 15:00 UTC.
Position (degrees and minutes)
How warnings write positions: degrees, a hyphen, then minutes, with N/S and E/W — 49-40.8N 003-43.8W.
Cancellation reference
A line that cancels an earlier warning by its number, such as CANCEL HYDROLANT 1085/12.

All warning terms →

Collected reports in this area · survey operations

127 within 180 nm since 2016 · 5 in the last 12 months · 1 listed in force now

16
20
25
26

Counts include repeat notices about the same situation. NGA archive coverage ends 2024-05; live collection began 2026-08-17. The period between them is incomplete. An empty year is not evidence that no hazards occurred.

Month of issue in the collected archive

J
F
M
A
M
J
J
A
S
O
N
D

All available years combined. Uneven collection and repeat bulletins affect these counts; this chart does not measure the seasonality or probability of incidents.

Nearby notices listed in force · within 120 nm

Worldwide in the collected sources

55 survey operations listed in force · see all

Record snapshot 2026-10-01 06:47Z; source collection times vary.

Surveys

Hydrographic and scientific survey vessels, often towing long arrays. All current survey operations →

Not for navigation. This is a re-rendering of an official navigational warning for awareness; mariners must use official NAVAREA broadcasts and their national MSI service.