Surveys

NAVAREA IV mobile offshore drilling units positions at 201530Z mar: a. argos 27-10.4N 090-21.9W

Caribbean Sea · NAVAREA IV 322/24

What this record establishes

Archived notice · 2024-03-27 18:02Z

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 0/24 201645Z MAR 24.. Issued 2024-03-20 17:08Z. 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 21.231, -84.716. 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
2024-03-20 17:08Z
status
Archived notice
authority
SFH 0/24 201645Z MAR 24.
NAVAREA
NAVAREA IV
issued by
SFH
sea
Caribbean Sea
position
21.231, -84.716
vessel
MSV OCEAN EVOLUTION · 36 messages
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 201530Z MAR:
   A. ARGOS 27-10.4N 090-21.9W.
   B. BLAKE 1007 27-22.0N 094-28.1W.
   C. BORR HILD 19-02.6N 092-26.6W.
   D. BORR RAN 18-47.5N 092-57.0W.
   E. COATZACOALCOS 19-28.9N 091-57.0W.
   F. DEEPWATER ASGARD 27-29.8N 090-33.5W.
   G. DEEPWATER ATLAS 26-54.1N 091-35.5W.
   H. DEEPWATER CONQUEROR 27-09.7N 091-14.9W.
   I. DEEPWATER INVICTUS 28-44.2N 088-20.3W.
   J. DEEPWATER PONTUS 28-01.7N 089-09.7W.
   K. DEEPWATER PROTEUS 28-09.6N 089-07.0W.
   L. (NEW POSITION) DEEPWATER THALASSA
      26-12.2N 094-44.6W.
   M. DEEPWATER TITAN 27-09.7N 091-12.0W.
   N. DEVELOPMENT DRILLER III 12-26.5N 070-06.5W.
   O. DISCOVERER INSPIRATION 28-51.1N 090-05.8W.
   P. ENTERPRISE 351 28-15.3N 091-26.0W.
   Q. FRIDA I 19-36.1N 092-31.6W.
   R. GALAR 18-30.5N 093-26.5W.
   S. GERSEMI 18-29.1N 093-21.6W.
   T. GRID 18-44.8N 093-07.4W.
   U. GSP ORIZONT 19-36.0N 090-58.0W.
   V. H&P RIG 201 28-09.4N 089-13.0W.
   W. H&P RIG 205 26-06.6N 094-53.1W.
   X. HELIX Q4000 27-28.7N 092-51.4W.
   Y. HELIX Q5000 26-06.9N 094-53.3W.
   Z. HOLSTEIN SPAR 27-19.6N 090-31.0W.
   AA. (NEW POSITION) JOE DOUGLAS
       09-59.8N 060-18.6W.
   AB. LIZA DESTINY 08-00.6N 056-59.5W.
   AC. LIZA UNITY 08-00.5N 056-54.8W.
   AD. MAD DOG 27-11.6N 090-16.5W.
   AE. MSV OCEAN EVOLUTION 28-00.7N 089-10.3W.
   AF. NABORS MODS 140 28-12.4N 088-46.4W.
   AG. NABORS MODS 200 28-06.2N 090-12.1W.
   AH. NABORS MODS 400 26-55.7N 090-31.4W.
   AI. NFE PIONEER III 22-39.2N 097-40.8W.
   AJ. (NEW POSITION) NOBLE BOB DOUGLAS
       07-58.7N 056-41.3W.
   AK. NOBLE DISCOVERER 13-00.0N 071-56.4W.
   AL. NOBLE DON TAYLOR 07-55.6N 056-43.1W.
   AM. NOBLE FAYE KOZACK 26-11.4N 092-07.9W.
   AN. NOBLE GLOBETROTTER I 27-52.0N 091-58.4W.
   AO. NOBLE GLOBETROTTER II 28-09.6N 089-07.1W.
   AP. NOBLE SAM CROFT 07-44.2N 056-21.3W.
   AQ. NOBLE STANLEY LAFOSSE 27-34.9N 090-07.0W.
   AR. NOBLE TOM MADDEN 08-09.0N 056-57.0W.
   AS. NOBLE VALIANT 26-17.8N 092-39.7W.
   AT. NOBLE VOYAGER 07-22.5N 055-32.9W.
   AU. OCEAN BLACKHAWK 26-04.9N 092-02.3W.
   AV. OCEAN BLACKHORNET 28-02.0N 088-22.0W.
   AW. OCEAN BLACKLION 27-06.3N 090-16.6W.
   AX. ODIN 18-18.3N 094-05.3W.
   AY. OLYMPUS N88 28-09.6N 089-12.8W.
   AZ. PAPALOAPAN 19-29.0N 092-01.6W.
   AAA. PROSPERITY 08-11.7N 057-00.1W.
   AAB. RALPH COFFMAN 18-20.4N 093-53.6W.
   AAC. ROWAN EXL II 29-03.3N 091-27.7W.
   AAD. SAIPEM SANTORINI 28-12.3N 088-46.5W.
   AAE. STENA CARRON 07-38.4N 056-17.4W.
   AAF. STENA DRILLMAX 07-36.7N 056-22.4W.
   AAG. STENA ICEMAX 28-10.0N 088-28.7W.
   AAH. THUNDERHORSE PDQ 28-10.0N 088-28.7W.
   AAI. TUXPAN 18-45.8N 091-45.7W.
   AAJ. (NEW POSITION) VALARIS 249
        10-05.3N 060-35.4W.
   AAK. VALARIS DPS-5 29-17.4N 088-00.3W.
   AAL. (NEW POSITION) VALARIS DS-16
        28-54.6N 088-05.7W.
   AAM. VALARIS DS-18 28-23.3N 088-14.1W.
   AAN. WELL SERVICES RIG 50 10-40.6N 061-38.7W.
   AAO. WEST COURAGEOUS 19-35.1N 092-13.7W.
   AAP. WEST DEFENDER 18-40.4N 092-52.4W.
   AAQ. WEST INTREPID 19-36.5N 092-15.5W.
   AAR. WEST NEPTUNE 26-12.8N 092-08.1W.
   AAS. WEST VELA 28-08.8N 089-51.3W.
   AAT. WFD 250 28-31.2N 091-31.6W.
   AAU. 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 279/24.

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

136 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

56 survey operations listed in force · see all

Record snapshot 2026-10-02 23:55Z; 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.