Surveys

NAVAREA IV mobile offshore drilling units positions at 221630Z dec: a. argos 27-10.4N 090-21.9W

Caribbean Sea · NAVAREA IV 1381/22

What this record establishes

Archived notice · 2023-01-25 16:11Z

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 0/22 221640Z DEC 22.. Issued 2022-12-22 18:27Z. 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
Caribbean Sea. The parsed report position is 21.111, -84.230. 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 Caribbean Sea →

issued
2022-12-22 18:27Z
status
Archived notice
authority
SFH 0/22 221640Z DEC 22.
NAVAREA
NAVAREA IV
issued by
SFH
sea
Caribbean Sea
position
21.111, -84.230
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 221630Z DEC:
   A. ARGOS 27-10.4N 090-21.9W.
   B. BLACKFORD DOLPHIN 18-54.9N 093-21.8W.
   C. BLAKE 1007 27-22.0N 094-28.1W.
   D. COATZACOALCOS 18-49.8N 091-50.5W.
   E. COSLHUNTER 19-15.9N 092-26.2W.
   F. (NEW POSITION) DEEPWATER ASGARD
      27-48.0N 089-38.9W.
   G. DEEPWATER ATLAS 26-54.2N 091-35.4W.
   H. DEEPWATER CONQUEROR 27-09.5N 091-11.9W.
   I. DEEPWATER INVICTUS 27-22.2N 090-08.7W.
   J. DEEPWATER PONTUS 28-01.5N 089-09.7W.
   K. DEEPWATER POSEIDON 27-58.6N 089-30.3W.
   L. (NEW POSITION) DEEPWATER PROTEUS
      28-01.6N 089-04.0W.
   M. (NEW POSITION) DEEPWATER THALASSA
      26-27.5N 090-46.5W.
   N. DEVELOPMENT DRILLER III 11-33.1N 073-34.5W.
   O. DISCOVERER INSPIRATION 27-46.9N 092-44.4W.
   P. (NEW POSITION) ENTERPRISE 264
      29-11.5N 088-57.0W.
   Q. ENTERPRISE 351 29-28.6N 088-40.6W.
   R. FRIDA I 19-36.1N 092-31.7W.
   S. GALAR 18-30.5N 093-26.5W.
   T. GERSEMI 18-29.1N 093-21.6W.
   U. GRID 18-26.7N 094-08.2W.
   V. GSP ORIZONT 19-36.0N 090-58.0W.
   W. H&P RIG 100 28-56.8N 088-35.3W.
   X. H&P RIG 201 28-12.1N 089-13.0W.
   Y. H&P RIG 205 26-09.4N 094-56.1W.
   Z. H&P RIG 406 27-33.8N 092-25.0W.
   AA. HELIX Q4000 28-54.5N 088-35.0W.
   AB. (NEW POSITION) HELIX Q5000
       28-36.5N 087-56.4W.
   AC. ISLAND VENTURE 27-13.7N 090-01.7W.
   AD. JOE DOUGLAS 18-52.9N 091-45.7W.
   AE. LIZA DESTINY 08-00.0N 057-00.0W.
   AF. LIZA UNITY 08-00.6N 056-54.8W.
   AG. MAD DOG 27-11.3N 090-16.1W.
   AH. MAERSK DISCOVERER 10-17.0N 060-19.0W.
   AI. (NEW POSITION) MAERSK VALIANT
       07-19.4N 055-52.6W.
   AJ. NABORS MODS 140 28-12.4N 088-46.4W.
   AK. NABORS MODS 200 28-06.2N 090-12.1W.
   AL. NABORS MODS 400 26-55.8N 090-31.2W.
   AM. NJORD 18-28.8N 093-27.6W.
   AN. NOBLE BOB DOUGLAS 08-09.7N 056-58.2W.
   AO. NOBLE DON TAYLOR 08-07.2N 056-59.7W.
   AP. (NEW POSITION) NOBLE FAYE KOZACK
       28-01.9N 088-46.3W.
   AQ. NOBLE GERRY DE SOUZA 10-39.0N 061-39.0W.
   AR. NOBLE GLOBETROTTER II 28-12.0N 089-15.8W.
   AS. (NEW POSITION) NOBLE REGINA ALLEN
       10-39.1N 061-37.4W.
   AT. (NEW POSITION) NOBLE SAM CROFT
       08-11.0N 056-54.9W.X
   AU. NOBLE STANLEY LAFOSSE 27-32.2N 090-10.0W.
   AV. (NEW POSITION) NOBLE TOM MADDEN
       08-13.4N 056-58.8W.
   AW. OCEAN BLACKHORNET 27-09.2N 090-30.9W.
   AX. OCEAN BLACKLION 27-08.8N 090-19.4W.
   AY. ODIN 18-30.1N 093-31.4W.
   AZ. OLYMPUS N88 28-09.4N 089-13.0W.
   AAA. PAPALOAPAN 18-26.7N 094-08.2W.
   AAB. RALPH COFFMAN 18-20.4N 093-53.6W.
   AAC. ROWAN EXL II 28-22.0N 091-27.7W.
   AAD. (NEW POSITION) ROWAN RELENTLESS
        26-17.3N 091-04.1W.
   AAE. SAIPEM SANTORINI 28-15.1N 088-46.5W.
   AAF. SEADRILL WEST VELA 27-18.0N 094-01.7W.
   AAG. (NEW POSITION) SEVAN LOUISIANA
        29-06.4N 088-06.4W.
   AAH. STENA CARRON 08-04.5N 057-01.1W.
   AAI. STENA DRILLMAX 08-46.4N 057-33.7W.
   AAJ. (NEW POSITION) THUNDERHORSE PDQ
        28-12.5N 088-28.6W.
   AAK. VALARIS DS-16 26-17.3N 091-04.1W.
   AAL. WELL SERVICES RIG 110 10-07.2N 061-58.7W.
   AAM. WELL SERVICES RIG 50 10-13.0N 061-49.8W.
   AAN. (NEW POSITION) WEST AURIGA 27-13.1N 090-02.8W.
   AAO. WEST COURAGEOUS 19-43.1N 092-20.0W.
   AAP. WEST INTREPID 19-35.4N 092-13.2W.
   AAQ. WEST NEPTUNE 28-04.7N 089-59.0W.
   AAR. (NEW POSITION) WFD 250 28-58.3N 090-26.8W.
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 1322/22.

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

143 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 2026-10-02 06:03Z; 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.