Underwater mine training exercises in progress until 31 may in areas bound by: in areas bound by: a.…
Persian Gulf · HYDROPAC 1627/23
What this record establishes
Archived notice · 2023-06-01 00:01Z
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) · USNS CATAWBA 0/23 161603Z MAY 23.. Issued 2023-05-16 16:53Z. 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
- Underwater mine training exercises in progress until 31 may in areas bound by: a. 26-54.00N 051-13.00E,…cancelled by this notice
These reports were linked by category and sea, with positions within 30 nautical miles and issue dates within 30 days of another report's recorded in-force span. Links can extend through other members, so the full group can cover a larger area or period. Proximity does not confirm that they describe one incident.
- HYDROPAC 778/232023-03-07 · Archived notice
- HYDROPAC 895/232023-03-17 · Archived notice
- HYDROPAC 1627/23 · this notice2023-05-16 · Archived notice
- issued
- 2023-05-16 16:53Z
- status
- Archived notice
- self-cancels
- 2023-06-01 00:01Z
- authority
- USNS CATAWBA 0/23 161603Z MAY 23.
- issued by
- USNS CATAWBA
- sea
- Persian Gulf
- position
- 26.780, 50.900
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
PERSIAN GULF.
BAHRAIN.
DNC 10.
1. UNDERWATER MINE TRAINING EXERCISES IN PROGRESS
UNTIL 31 MAY IN AREAS BOUND BY:
IN AREAS BOUND BY:
A. 26-54.00N 051-13.00E, 26-54.00N 050-35.00E,
26-40.00N 050-35.00E, 26-40.00N 051-13.00E.
B. 26-16.77N 050-53.86E, 26-16.77N 050-51.98E,
26-15.04N 050-51.98E, 26-15.04N 050-53.86E.
2. INERT OBSTRUCTIONS MOORED 30 FEET BELOW SURFACE.
3. CANCEL HYDROPAC 895/23.
4. CANCEL THIS MSG 010001Z JUN 23.
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.
- Mines and mine danger areas
- Sea mines reported adrift or found, and areas where mines are known or suspected to remain.
- 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.
- Submerged obstruction
- Something on or near the seabed that could damage a ship, an anchor or fishing gear — its nature often unknown.
- 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.
- 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.
Collected reports in this area · wrecks & obstructions
62 within 180 nm since 1995 · 0 in the last 12 months · 1 listed in force now
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.
- Foul ground, anchor with 2.5 shackle chain reported in 25-07.69N 052-53.09E2025-02-07
- Dangerous wreck, least depth 19 meters in 26-26.22N 051-36.64E2024-11-01
- Dangerous wreck in 26-36.25N 050-27.95E2023-11-06
- Obstructions reported in vicinity: a. 25-58.42N 051-35.40E2023-11-06
- Obstructions reported in vicinity: a. 25-58.42N 051-35.40E2023-11-03
- Wreck of meteorological tower marked by light in 28-46.0N 048-26.1E2023-03-24
Month of issue in the collected archive
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
- Mooring buoy established in 26-38.47N 051-55.82ENav aids · 55.9 nm
- Pipeline operations 18 sep until further notice by barge mc dermott in area bound by 25-59.10N 051-36.60E,…Cable ops · 56 nm
- Underwater operations in progress until further notice by M/V HYSY289 in area bound by 26-41.99N 051-53.26E,…Surveys · 56.7 nm
- Bh jacket light fl(r) 4 sec temporarily established in 26-38.41N 051-56.90ENav aids · 56.9 nm
- Wave rider buoy, fl 5 y 10 sec, temporarily established in 26-39.57N 051-57.22ENav aids · 57 nm
- Survey operations in progress until further notice by M/V halul 41 in area bound by 26-23.34N 051-47.10E,…Surveys · 64.9 nm
- Pipeline operations 10 aug thru 10 nov by vessel barge derrick barge 30 in area bound by 26-31.70N…Cable ops · 67.8 nm
- Survey operations 18 sep until further notice by M/V fugro resilience in area bound by 26-33.31N 051-04.86E,…Surveys · 74.2 nm
Worldwide in the collected sources
38 wrecks & obstructions listed in force · see all
Record snapshot 2026-10-01 19:40Z; source collection times vary.
Wrecks
Dangerous wrecks, shoals and submerged obstructions. All current wrecks & obstructions →
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.