Surveys

NAVAREA IV mobile offshore drilling units positions at 2024-03-27 17:23:46.424288: a. argos 27-10.40N…

Caribbean Sea · NAVAREA IV 356/24

What this record establishes

Archived notice · 2024-04-03 16:44Z

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 271752Z MAR 24.. Issued 2024-03-27 18:02Z. 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 21.596, -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
2024-03-27 18:02Z
status
Archived notice
authority
SFH 0/24 271752Z MAR 24.
NAVAREA
NAVAREA IV
issued by
SFH
sea
Caribbean Sea
position
21.596, -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 2024-03-27 17:23:46.424288:
   A. ARGOS 27-10.40N 090-21.90W.
   B. BLAKE 1007 27-22.00N 094-28.10W.
   C. BORR HILD 19-02.60N 092-26.60W.
   D. BORR RAN 18-47.50N 092-57.00W.
   E. COATZACOALCOS 19-28.90N 091-57.00W.
   F. DEEPWATER ASGARD 27-29.80N 090-33.50W.
   G. DEEPWATER ATLAS 26-54.10N 091-35.50W.
   H. DEEPWATER CONQUEROR 27-09.70N 091-14.90W.
   I. DEEPWATER INVICTUS 28-44.20N 088-20.30W.
   J. DEEPWATER PONTUS 28-01.70N 089-09.70W.
   K. DEEPWATER PROTEUS 28-09.60N 089-07.00W.
   L. DEEPWATER THALASSA 26-12.20N 094-44.60W.
   M. DEEPWATER TITAN 27-09.70N 091-12.00W.
   N. DEVELOPMENT DRILLER III 12-26.50N 070-06.50W.
   O. DISCOVERER INSPIRATION 28-51.10N 090-05.80W.
   P. ENTERPRISE 351 28-15.30N 091-26.00W.
   Q. FRIDA I 19-36.10N 092-31.60W.
   R. GALAR 18-30.50N 093-26.50W.
   S. GERSEMI 18-29.10N 093-21.60W.
   T. GRID 18-44.80N 093-07.40W.
   U. GSP ORIZONT 19-36.00N 090-58.00W.
   V. H&P RIG 201 28-09.40N 089-13.00W.
   W. H&P RIG 205 26-06.60N 094-53.10W.
   X. HELIX Q4000 27-28.70N 092-51.40W.
   Y. HELIX Q5000 26-06.90N 094-53.30W.
   Z. HOLSTEIN SPAR 27-19.60N 090-31.00W.
   AA. (NEW POSITION) JOE DOUGLAS
       09-59.70N 060-18.40W.
   AB. LIZA DESTINY 08-00.60N 056-59.50W.
   AC. LIZA UNITY 08-00.50N 056-54.80W.
   AD. MAD DOG 27-11.60N 090-16.50W.
   AE. MSV OCEAN EVOLUTION 28-00.70N 089-10.30W.
   AF. NABORS MODS 140 28-12.40N 088-46.40W.
   AG. NABORS MODS 200 28-06.20N 090-12.10W.
   AH. NABORS MODS 400 26-55.70N 090-31.40W.
   AI. NFE PIONEER III 22-39.20N 097-40.80W.
   AJ. NOBLE BOB DOUGLAS 07-58.70N 056-41.30W.
   AK. NOBLE DISCOVERER 13-00.00N 071-56.40W.
   AL. (NEW POSITION) NOBLE DON TAYLOR
       07-56.00N 056-43.00W.
   AM. NOBLE FAYE KOZACK 26-11.40N 092-07.90W.
   AN. NOBLE GLOBETROTTER I 27-52.00N 091-58.40W.
   AO. NOBLE GLOBETROTTER II 28-09.60N 089-07.10W.
   AP. NOBLE SAM CROFT 07-44.20N 056-21.30W.
   AQ. NOBLE STANLEY LAFOSSE 27-34.90N 090-07.00W.
   AR. NOBLE TOM MADDEN 08-09.00N 056-57.00W.
   AS. NOBLE VALIANT 26-17.80N 092-39.70W.
   AT. NOBLE VOYAGER 07-22.50N 055-32.90W.
   AU. OCEAN BLACKHAWK 26-04.90N 092-02.30W.
   AV. OCEAN BLACKHORNET 28-02.00N 088-22.00W.
   AW. OCEAN BLACKLION 27-06.30N 090-16.60W.
   AX. ODIN 18-18.30N 094-05.30W.
   AY. OLYMPUS N88 28-09.60N 089-12.80W.
   AZ. PAPALOAPAN 19-29.00N 092-01.60W.
   AAA. PROSPERITY 08-11.70N 057-00.10W.
   AAB. RALPH COFFMAN 18-20.40N 093-53.60W.
   AAC. ROWAN EXL II 29-03.30N 091-27.70W.
   AAD. SAIPEM SANTORINI 28-12.30N 088-46.50W.
   AAE. STENA CARRON 07-38.40N 056-17.40W.
   AAF. STENA DRILLMAX 07-36.70N 056-22.40W.
   AAG. STENA ICEMAX 28-10.00N 088-28.70W.
   AAH. THUNDERHORSE PDQ 28-10.00N 088-28.70W.
   AAI. TUXPAN 18-45.80N 091-45.70W.
   AAJ. VALARIS 249 10-05.30N 060-35.40W.
   AAK. VALARIS DPS-5 29-17.40N 088-00.30W.
   AAL. VALARIS DS-16 28-54.60N 088-05.70W.
   AAM. VALARIS DS-18 28-23.30N 088-14.10W.
   AAN. WELL SERVICES RIG 50 10-40.60N 061-38.70W.
   AAO. WEST COURAGEOUS 19-35.10N 092-13.70W.
   AAP. WEST DEFENDER 18-40.40N 092-52.40W.
   AAQ. WEST INTREPID 19-36.50N 092-15.50W.
   AAR. WEST NEPTUNE 26-12.80N 092-08.10W.
   AAS. WEST VELA 28-08.80N 089-51.30W.
   AAT. WFD 250 28-31.20N 091-31.60W.
   AAU. WFD 400 28-17.00N 091-40.40W.
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 322/24.

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.
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

138 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 22:46Z; 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.