Surveys
Survey operations in progress until 150100Z feb in areas bound by: a. 24-21.39N 051-40.79E, 24-21.39N…
Persian Gulf · HYDROPAC 457/21
What this record establishes
Archived notice · 2021-02-15 02:00Z
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) · NAVAREA IX 53/21 081503Z FEB 21.. Issued 2021-02-08 15:40Z. 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
- Persian Gulf. The map shows an area described by the warning; the listed coordinate is its representative center. Check the original wording for limits and qualifications.
Related notices and cancellation links
- issued
- 2021-02-08 15:40Z
- status
- Archived notice
- self-cancels
- 2021-02-15 02:00Z
- authority
- NAVAREA IX 53/21 081503Z FEB 21.
- NAVAREA
- NAVAREA IX · named as the source of this relay
- sea
- Persian Gulf
- position
- 24.314, 51.800
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
U.A.E.
PERSIAN GULF.
DNC 10.
1. SURVEY OPERATIONS IN PROGRESS UNTIL 150100Z FEB
IN AREAS BOUND BY:
A. 24-21.39N 051-40.79E, 24-21.39N 051-51.71E,
24-15.66N 051-51.71E, 24-15.66N 051-48.21E,
24-16.31N 051-48.21E, 24-06.69N 052-06.62E,
24-06.69N 052-14.16E, 24-02.92N 052-14.16E,
24-02.92N 052-06.62E.
B. 25-28.53N 054-02.58E, 25-28.20N 054-17.86E,
25-23.23N 054-17.72E, 25-23.55N 054-02.46E.
C. 25-31.71N 054-07.20E, 25-31.56N 054-13.85E,
25-20.08N 054-13.54E, 25-20.22N 054-06.91E.
D. 25-22.94N 053-00.58E, 25-22.94N 053-13.09E,
25-22.15N 053-13.09E, 25-22.15N 053-00.58E.
E. 25-25.99N 053-04.18E, 25-25.99N 053-09.44E,
25-19.00N 053-09.44E, 25-19.00N 053-04.18E.
WIDE BERTH REQUESTED.
2. CANCEL HYDROPAC 448/21(61,75,76).
3. CANCEL THIS MSG 150200Z FEB 21.
Reading this warning
- DNC (Digital Nautical Chart)
- A reference to one of the regions of NGA's Digital Nautical Chart, used to tell the reader which charts a warning affects.
- Survey operations
- A research or survey vessel is mapping the seabed or water column, often while towing equipment.
- 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.
- Area bound by
- Introduces a list of positions that are the corners of an area — the polygon the warning applies to.
- 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.
- Wide berth requested
- Keep well clear — or, when a distance is given ("TWO MILE BERTH REQUESTED"), at least that far away.
- Cancellation reference
- A line that cancels an earlier warning by its number, such as CANCEL HYDROLANT 1085/12.
- HYDROPAC
- The U.S. long-range warning series for the Pacific outside NAVAREA XII and for the Indian Ocean, Persian Gulf and adjoining seas.
- CANCEL THIS MSG
- The warning's own expiry: a line telling the reader when the message cancels itself.
Collected reports in this area · survey operations
432 within 180 nm since 2000 · 5 in the last 12 months · 3 listed in force now
00
05
10
15
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.
- Survey operations 18 sep until further notice by M/V fugro resilience in area bound by 26-33.31N 051-04.86E,…2026-09-17
- Survey operations in progress until 05 sep by M/V furgo proteus in areas bound by: a. 26-33.34N 051-03.56E,…2026-08-04
- Survey operations in progress until further notice by M/V halul 41 in area bound by 26-23.34N 051-47.10E,…2026-01-30
- Survey operations in progress until 31 dec by M/V astro aquila in area bound by 26-42.50N 051-53.50E,…2025-11-27
- Underwater operations in progress until further notice by M/V constructor in area bound by 26-28.58N…2025-10-28
- Survey operations in progress until 31 dec by M/V HALUL-51 with submersible along tracklines joining: a.…2025-10-01
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
- RACON at dalma buoy 24-32.51N 052-27.85E inoperativeNav aids · 38.8 nm
- 12.9 meter depths reported in borouge channel 24-09.00N 052-45.20EWrecks · 53.1 nm
- Foul ground, anchor with 2.5 shackle chain reported in 25-07.69N 052-53.09EWrecks · 76.7 nm
- Survey operations 18 sep until further notice by M/V fugro resilience in area bound by 26-33.31N 051-04.86E,…Surveys · 89.3 nm
- Zaqqum buoy in 25-06.56N 053-25.06ENav aids · 100.3 nm
- Pipeline operations 18 sep until further notice by barge mc dermott in area bound by 25-59.10N 051-36.60E,…Cable ops · 107.9 nm
- Survey operations in progress until further notice by M/V halul 41 in area bound by 26-23.34N 051-47.10E,…Surveys · 111.3 nm
Worldwide in the collected sources
55 survey operations listed in force · see all
Record snapshot 2026-10-02 07:17Z; 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.