Exercises
Hazardous operations 080700Z to 081200Z, 0500Z to 1200Z daily 09 thru 11 and 120600Z to 120900Z apr in area…
Black Sea · HYDROLANT 670/24
What this record establishes
Archived notice · 2024-04-12 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) · ROMANIA 28/24 011327Z APR 24.. Issued 2024-04-01 13:54Z. 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
- Black 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.
Related notices and cancellation links
- Man overboard in vicinity 35-22.00N 011-56.00E at 281700Z marcancelled by this notice
Activity windows · 5 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2024-04-08 07:00Z | 2024-04-08 12:00Z | — | 5 h |
| 2024-04-09 05:00Z | 2024-04-09 12:00Z | — | 7 h |
| 2024-04-10 05:00Z | 2024-04-10 12:00Z | — | 7 h |
| 2024-04-11 05:00Z | 2024-04-11 12:00Z | — | 7 h |
| 2024-04-12 06:00Z | 2024-04-12 09:00Z | — | 3 h |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2024-04-01 13:54Z
- status
- Archived notice
- self-cancels
- 2024-04-12 10:00Z
- authority
- ROMANIA 28/24 011327Z APR 24.
- issued by
- ROMANIA
- sea
- Black Sea
- position
- 44.394, 28.766
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
BLACK SEA. ROMANIA. DNC 10. 1. HAZARDOUS OPERATIONS 080700Z TO 081200Z, 0500Z TO 1200Z DAILY 09 THRU 11 AND 120600Z TO 120900Z APR IN AREA BOUND BY 44-25.43N 028-42.50E, 44-27.60N 028-50.00E, 44-19.00N 028-47.00E, 44-22.08N 028-42.42E. 2. CANCEL HYDROLANT 643/24(52). 3. CANCEL THIS MSG 121000Z APR 24.
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.
- Hazardous operations
- NGA's heading for activities that make an area dangerous — most often rocket launches, space debris and weapons firings, and some open-ended danger areas.
- 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.
- Cancellation reference
- A line that cancels an earlier warning by its number, such as CANCEL HYDROLANT 1085/12.
- HYDROLANT
- The U.S. long-range warning series for Atlantic waters outside NAVAREA IV, including the eastern Atlantic, the Mediterranean 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 · military exercises
955 within 180 nm since 1999 · 11 in the last 12 months · 1 listed in force now
99
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.
- Hazardous operations 0600Z to 1200Z daily 06 thru 08 oct in area bound by 44-05.00N 029-08.00E, 44-15.00N…2026-10-01
- Hazardous operations 0600Z to 1500Z daily 05 and 06 oct in area bound by 44-25.43N 028-42.50E, 44-27.60N…2026-09-30
- Hazardous operations 010700Z to 011500Z oct in area bound by 44-05.00N 029-08.00E, 44-15.00N 029-08.00E,…2026-09-29
- Hazardous operations 0500Z to 1300Z daily 29 and 30 sep in area bound by 44-25.43N 028-42.50E, 44-29.50N…2026-09-28
- Hazardous operations 0700Z to 1500Z daily 30 sep and 01 oct in area bound by 44-05.00N 029-08.00E, 44-15.00N…2026-09-22
- Hazardous operations 0430Z to 1630Z daily 06 thru 09 oct in area bound by 44-56.00N 029-36.00E, 44-58.00N…2026-09-22
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
- Fog signal at constanta outer harbor light 44-08.61N 028-40.37E inoperativeNav aids · 15.5 nm
- Due to the presence of mines, all vessels approaching and departing romanian ports are encouraged to use the…Mines · 22 nm
- Mines reported in area within five miles of 45-07.10N 030-09.70EMines · 73.7 nm
- 1- neptun alpha production platform has been established at the central coordinate point: 44-02.85N 030-35.25EStructures · 81.1 nm
- Underwater operations 05 jan 25 thru 31 dec 26 in area bound by 44-04.40N 030-34.13E, 44-02.40N 030-30.50E,…Surveys · 86.3 nm
- War risk area, in northwestern part of black sea to northern of line 45-12.2N 029-41.1E 45-11.5N 029-41.4E…War risk · 101 nm
- Mining operations in progress until further notice in areas bound by: a. 46-22.50N 030-45.10E, 46-20.20N…Mines · 110.7 nm
- Ukrainian coastal warning coordinator has declared the following coastal aproach instructions for entry or…Other · 110.8 nm
- The coordinator of coastal alerts of ukraine has declared the following coastal approach instructions for…War risk · 111.4 nm
Worldwide in the collected sources
9 military exercises listed in force · see all
Record snapshot 2026-10-02 18:50Z; source collection times vary.
Exercises
Gunnery, firing and naval exercise areas. All current military exercises →
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.