Surveys

NAVAREA IV lists positions of mobile offshore drilling units as of August 12 at 14:40 UTC.

Caribbean Sea · NAVAREA IV 783/26

What this record establishes

Cancelled notice · 2026-09-02 17:00Z

A later message explicitly cancels this notice. Cancellation ends the notice; the later message must be checked for any statement about recovery or continuing danger.

Source and dates
NGA MSI in-force warnings (DailyMem*.txt). Issued 2026-08-12 15:03Z. First collected 2026-08-17 13:41Z; last seen in collection 2026-09-03 15:02Z. Collection dates record ingestion, not a new incident or a fresh field observation.
Location covered
Caribbean Sea. The parsed report position is 21.059, -84.778. 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
2026-08-12 15:03Z
status
Cancelled notice
NAVAREA
NAVAREA IV
sea
Caribbean Sea
position
21.059, -84.778
nearest port
Nueva Gerona · 122 nm
source
NGA MSI in-force warnings (DailyMem*.txt) · first seen 2026-08-17 13:41Z

Original warning text

1. NAVAREA IV MOBILE OFFSHORE DRILLING UNITS
   POSITIONS AT 121440Z AUG:
   A. AGOSTO 12 19-23.0N 092-03.1W.
   B. ALULA 11-38.4N 070-21.8W.
   C. ARGOS PLATFORM 27-10.4N 090-22.0W.
   D. ATLANTIS 19-23.9N 092-02.3W.
   E. AUGER TLP 27-32.7N 092-26.6W.
   F. BLUE EAGLE 18-28.6N 094-01.9W.
   G. BORR RAN 18-27.3N 093-41.3W.
   H. BP ATLANTIS PLATFORM 27-11.7N 090-01.6W.
   I. CENTENARIO GR 21-07.7N 097-08.1W.
   J. CHIHUAHUA 19-39.7N 090-44.4W.
   K. CME I 19-34.6N 092-02.7W.
   L. CME II 18-34.4N 092-46.2W.
   M. COATZACOALCOS 19-35.3N 092-12.1W.
   N. CPOC MAGNOLIA 27-12.2N 092-12.2W.
   O. DEEPWATER ASGARD 27-21.5N 090-44.6W.
   P. DEEPWATER ATLAS 26-54.5N 091-34.6W.
   Q. DEEPWATER CONQUEROR 26-17.8N 091-05.6W.
   R. DEEPWATER INVICTUS 26-42.4N 092-38.5W.
   S. DEEPWATER PONTUS 28-30.9N 088-08.7W.
   T. DEEPWATER POSEIDON 26-13.8N 094-43.8W.
   U. (NEW RIG) DEEPWATER PROTEUS 26-31.2N 090-31.9W.
   V. DEEPWATER THALASSA 25-45.0N 095-24.3W.
   W. DEEPWATER TITAN 27-09.1N 091-12.7W.
   X. DEFENDER 18-28.6N 094-01.9W.
   Y. DEVELOPMENT DRILLER III 10-38.5N 061-39.0W.
   Z. ENTERPRISE 264 10-21.2N 061-49.0W.
   AA. (NEW RIG) ERREA WITTU 08-00.3N 056-50.4W.
   AB. ESSAR WILDCAT 18-51.5N 091-45.7W.
   AC. FRIDA I 19-36.1N 092-31.6W.
   AD. GALAR 22-16.1N 097-28.3W.
   AE. GERSEMI 19-02.5N 092-14.8W.
   AF. GULF DRILLER VI 19-23.1N 092-20.8W.
   AG. GULF DRILLER VIII 18-29.9N 094-00.4W.
   AH. H&P RIG 201 28-09.6N 089-13.1W.
   AI. H&P RIG 203 28-08.5N 089-57.3W.
   AJ. H&P RIG 205 26-06.8N 094-53.2W.
   AK. (NEW POSITION) HELIX Q4000
       27-20.0N 090-36.0W.
   AL. HELIX Q5000 28-00.6N 089-09.8W.
   AM. HILD 19-02.6N 092-26.6W.
   AN. INDEPENDENCIA 1 19-17.9N 091-51.2W.
   AO. IOLAIR 19-30.8N 092-09.1W.
   AP. JACK ST MALO 26-14.1N 091-15.7W.
   AQ. JOE DOUGLAS 09-59.6N 060-18.4W.
   AR. KUKULKAN 18-16.4N 094-03.6W.
   AS. LA COVADONGA 19-18.1N 092-10.0W.
   AT. LA SANTA MARIA 18-36.8N 093-17.7W.
   AU. LIZA DESTINY 08-00.7N 056-59.5W.
   AV. LIZA UNITY 08-00.6N 056-54.9W.
   AW. MAD DOG 27-11.3N 090-16.1W.
   AX. MAERSK DISCOVERER 11-38.9N 073-42.0W.
   AY. MARLIN TLP 29-06.5N 087-56.7W.
   AZ. MARS TLP 28-10.4N 089-13.4W.
   AAA. MIAMTE MV34 18-24.3N 093-46.2W.
   AAB. NABARIMA 10-14.8N 062-09.0W.
   AAC. NABORS MODS 140 28-12.5N 088-43.5W.
   AAD. NABORS MODS 400 26-56.0N 090-31.4W.
   AAE. NFE PIONEER III 22-39.2N 097-40.8W.
   AAF. NJORD 18-30.4N 093-15.7W.
   AAG. NOBLE BLACKHAWK 27-14.4N 090-49.1W.
   AAH. NOBLE BLACKHORNET 27-13.5N 090-01.9W.
   AAI. NOBLE BLACKLION 27-08.8N 090-19.1W.
   AAJ. (NEW POSITION) NOBLE BLACKRHINO
        28-53.6N 090-07.1W.
   AAK. (NEW POSITION) NOBLE BOB DOUGLAS
        08-00.1N 056-42.7W.
   AAL. NOBLE DEVELOPER 07-18.2N 055-46.9W.
   AAM. (NEW POSITION) NOBLE DON TAYLOR
        08-02.6N 056-44.7W.
   AAN. (NEW POSITION) NOBLE SAM CROFT
        07-56.0N 056-42.7W.
   AAO. NOBLE STANLEY LAFOSSE 28-36.1N 088-12.6W.
   AAP. (NEW POSITION) NOBLE TOM MADDEN
        08-06.2N 056-55.9W.
   AAQ. OLYMPUS N88 28-09.6N 089-12.8W.
   AAR. ONE GUYANA 07-57.4N 056-43.0W.
   AAS. PAPALOAPAN 19-25.1N 092-03.1W.
   AAT. PERRO NEGRO 10 18-20.2N 093-52.2W.
   AAU. PIONEER 26-41.7N 090-30.6W.
   AAV. PROSPERITY 08-11.7N 057-00.2W.
   AAW. SANDUNGA 19-31.0N 091-59.0W.
   AAX. SEAROSE FPSO 46-47.2N 048-00.8W.
   AAY. (NEW POSITION) SEVAN LOUISIANA
        28-50.8N 090-05.3W.
   AAZ. SHELL WHALE 26-13.4N 094-40.4W.
   AAAA. (NEW POSITION) STENA CARRON
         08-53.1N 057-19.7W.
   AAAB. STENA EVOLUTION 27-02.4N 092-14.6W.
   AAAC. TAHITI SPAR 27-19.6N 090-42.9W.
   AAAD. TERRA NOVA 46-28.3N 048-27.9W.
   AAAE. THUNDER HORSE PDQ 28-11.4N 088-29.7W.
   AAAF. TUXPAN 18-45.8N 091-45.7W.
   AAAG. UXPANAPA 18-32.4N 093-17.7W.
   AAAH. VALARIS DS-16 27-23.5N 090-15.7W.
   AAAI. VALARIS GORILLA VII 10-39.1N 061-37.4W.
   AAAJ. VITO FPU 28-01.5N 089-12.6W.
   AAAK. WEST COURAGEOUS 19-30.4N 092-00.0W.
   AAAL. WEST INTREPID 19-36.5N 092-15.5W.
   AAAM. WEST NEPTUNE 28-10.5N 088-45.4W.
   AAAN. (NEW POSITION) WEST VELA
         26-50.9N 091-00.1W.
   AAAO. WFD 400 28-41.0N 090-08.9W.
   AAAP. YUNUEN 19-32.4N 092-10.5W.
   AAAQ. YUUM K'AK' NAAB 19-36.7N 092-17.9W.
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 735/26.

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

133 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 00:23Z; 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.