Hydrographic operations in progress until 311700Z dec vicinity of tracklines: a. between 45-14.7N 036-35.6E…
Sea of Azov · HYDROLANT 2021/15
What this record establishes
Archived notice · 2015-12-31 18:00Z
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 477/15 181159Z AUG 15.. Issued 2015-08-18 13:45Z. 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
- Sea of Azov. The map shows the reported line or operation extent; it is not a vessel track. Check the original wording for limits and qualifications.
- issued
- 2015-08-18 13:45Z
- status
- Archived notice
- self-cancels
- 2015-12-31 18:00Z
- authority
- NAVAREA III 477/15 181159Z AUG 15.
- NAVAREA
- NAVAREA III · named as the source of this relay
- sea
- Sea of Azov
- position
- 45.293, 36.527
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
KERCH STRAIT.
DNC 10.
1. HYDROGRAPHIC OPERATIONS IN PROGRESS UNTIL 311700Z DEC
VICINITY OF TRACKLINES:
A. BETWEEN 45-14.7N 036-35.6E AND 45-15.0N 036-34.7E.
B. BETWEEN 45-17.6N 036-31.2E AND 45-18.4N 036-30.5E.
C. JOINING
45-18.6N 036-30.4E, 45-19.0N 036-30.1E,
45-19.0N 036-30.0E, 45-19.3N 036-29.7E,
45-19.4N 036-29.3E.
2. CANCEL THIS MSG 311800Z DEC 15.
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.
- 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.
- Track line joining
- Introduces a route through a series of positions — a cable route, a tow's track or a survey line.
- 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 · other warnings
28 within 180 nm since 2001 · 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.
- Hazardous operation 0500Z to 1700Z daily 31 may thru 04 jun in area bound by 44-45.0N 036-41.5E, 44-33.0N…2021-05-28
- Hazardous operation 0500Z to 1700Z daily 17 thru 20 may in area bound by 44-45.0N 036-41.5E, 44-33.0N…2021-05-15
- Hazardous operation 0400Z to 1800Z daily 26 thru 30 apr in areas bound by: a. 44-45.0N 036-41.5E, 44-33.0N…2021-04-24
- Hazardous operation 0400Z to 1800Z daily 19 thru 23 apr in areas bound by: a. 44-45.0N 036-41.5E, 44-33.0N…2021-04-18
- Underwater cables established along trackline joining 44-35.47N 033-24.13E, 44-35.94N 033-24.63E, 44-36.56N…2019-10-29
- Traffic separation scheme sevastopol roundabout buoy 44-38.8N 033-17.0E unreliable until 15 apr2019-04-10
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
No other collected notice is currently listed in force within this radius. This does not establish safe conditions.
Worldwide in the collected sources
21 other warnings listed in force · see all
Record snapshot 2026-10-03 10:09Z; source collection times vary.
Other
Everything the classifier did not place elsewhere. All current other 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.