Mining operations in areas bound by: a. 100600Z to 101230Z jun 37-55.54N 023-23.00E, 37-56.36N 023-23.00E,…
Aegean Sea · HYDROLANT 1897/20
What this record establishes
Archived notice · 2020-06-11 10:00Z
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 III 874/20 081156Z JUN 20.. Issued 2020-06-08 13:50Z. 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
- Aegean Sea. The map shows an area described by the warning; the listed coordinate is its representative center. Check the original wording for limits and qualifications.
Activity windows · 2 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2020-06-10 06:00Z | 2020-06-10 12:30Z | — | 6 h 30 |
| 2020-06-11 07:00Z | 2020-06-11 09:00Z | — | 2 h |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2020-06-08 13:50Z
- status
- Archived notice
- self-cancels
- 2020-06-11 10:00Z
- authority
- NAVAREA III 874/20 081156Z JUN 20.
- NAVAREA
- NAVAREA III · named as the source of this relay
- sea
- Aegean Sea
- position
- 37.754, 23.297
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
AEGEAN SEA.
DNC 09.
1. MINING OPERATIONS IN AREAS BOUND BY:
A. 100600Z TO 101230Z JUN
37-55.54N 023-23.00E, 37-56.36N 023-23.00E,
37-56.36N 023-27.54E, 37-55.54N 023-27.54E.
B. 110700Z TO 110900Z JUN
37-48.00N 023-12.40E, 37-48.00N 023-24.00E,
37-45.30N 023-24.00E, 37-44.30N 023-21.00E,
37-40.30N 023-19.00E, 37-40.30N 023-13.00E.
2. CANCEL THIS MSG 111000Z JUN 20.
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.
- Area bound by
- Introduces a list of positions that are the corners of an area — the polygon the warning applies to.
- 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.
- CANCEL THIS MSG
- The warning's own expiry: a line telling the reader when the message cancels itself.
Collected reports in this area · mine warnings
1 within 180 nm since 2020 · 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.
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
Worldwide in the collected sources
8 mine warnings listed in force · see all
Record snapshot 2026-10-03 23:18Z; source collection times vary.
Mines
Drifting or reported sea mines. Mostly the Black Sea since 2022. All current mine warnings →
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.