Submerged aircraft, least known depth 18.5 meters above the sea floor, marked by buoy with AIS
Persian Gulf · HYDROPAC 257/20
What this record establishes
Archived notice · 2020-07-10 13:27Z
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 35/20 231516Z JAN 20.. Issued 2020-01-23 15:21Z. 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 parsed report position is 26.599, 50.975 with a 2.0 nm radius. 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
- issued
- 2020-01-23 15:21Z
- status
- Archived notice
- authority
- NAVAREA IX 35/20 231516Z JAN 20.
- NAVAREA
- NAVAREA IX · named as the source of this relay
- sea
- Persian Gulf
- position
- 26.599, 50.975 · r 2.0 nm
- 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. SUBMERGED AIRCRAFT, LEAST KNOWN DEPTH 18.5 METERS ABOVE THE SEA FLOOR, MARKED BY BUOY WITH AIS. NAVIGATION PROHIBITED IN AREA WITHIN TWO MILES OF 26-35.93N 050-58.48E. 2. CANCEL HYDROPAC 3791/19.
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.
- AIS (Automatic Identification System)
- The radio transponder system that broadcasts a ship's identity, position, course and speed — and can mark a hazard with a virtual beacon.
- Navigation prohibited
- Ships may not enter or pass through the area, or a port is closed to traffic.
- Within a radius of
- A circular area — every position within a stated distance of a point.
- 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.
- HYDROPAC
- The U.S. long-range warning series for the Pacific outside NAVAREA XII and for the Indian Ocean, Persian Gulf and adjoining seas.
Collected reports in this area · restricted areas & port closures
8 within 180 nm since 2005 · 0 in the last 12 months · 0 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.
- Submerged aircraft, least known depth 18.5 meters above the sea floor, marked by buoy with AIS2019-08-29
- Submerged aircraft, least known depth 18.5 meters above the sea floor, marked by buoy with AIS2019-07-08
- Submerged aircraft, least known depth 18.5 meters above the sea floor, marked by buoy with AIS2019-06-18
- Submerged aircraft least known depth 19 meters above the sea floor2019-06-14
- Submerged aircraft2019-06-12
- Navigation prohibited until further notice in area within 400 meters of: a. 25-10.30N 052-52.92E2019-04-17
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
- Pipeline operations 18 sep until further notice by barge mc dermott in area bound by 25-59.10N 051-36.60E,…Cable ops · 45.6 nm
- Bh jacket light fl(r) 4 sec temporarily established in 26-38.41N 051-56.90ENav aids · 52.3 nm
- Underwater operations in progress until further notice by M/V HYSY289 in area bound by 26-41.99N 051-53.26E,…Surveys · 52.5 nm
- Wave rider buoy, fl 5 y 10 sec, temporarily established in 26-39.57N 051-57.22ENav aids · 52.7 nm
- Survey operations in progress until further notice by M/V halul 41 in area bound by 26-23.34N 051-47.10E,…Surveys · 55.8 nm
- Pipeline operations 10 aug thru 10 nov by vessel barge derrick barge 30 in area bound by 26-31.70N…Cable ops · 61.2 nm
- Survey operations 18 sep until further notice by M/V fugro resilience in area bound by 26-33.31N 051-04.86E,…Surveys · 63.2 nm
Worldwide in the collected sources
2 restricted areas & port closures listed in force · see all
Record snapshot 2026-10-03 15:40Z; source collection times vary.
Restricted
Navigation prohibited, exclusion and security zones, ports closed to traffic. All current restricted areas & port closures →
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.