Navigation prohibited 110300Z to 140300Z oct in area bound by 45-20.4N 036-28.3E, 45-20.0N 036-30.9E,…
Sea of Azov · HYDROLANT 3237/17
What this record establishes
Archived notice · 2017-10-14 04:00Z
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 749/17 102048Z OCT 17.. Issued 2017-10-10 21:08Z. 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 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
Activity windows · 1 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2017-10-11 03:00Z | 2017-10-14 03:00Z | — | 72 h |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2017-10-10 21:08Z
- status
- Archived notice
- self-cancels
- 2017-10-14 04:00Z
- authority
- NAVAREA III 749/17 102048Z OCT 17.
- NAVAREA
- NAVAREA III · named as the source of this relay
- sea
- Sea of Azov
- position
- 45.316, 36.504
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
KERCH STRAIT. UKRAINE. DNC 10. CHART 55190. 1. NAVIGATION PROHIBITED 110300Z TO 140300Z OCT IN AREA BOUND BY 45-20.4N 036-28.3E, 45-20.0N 036-30.9E, 45-18.6N 036-32.6E, 45-17.5N 036-31.0E, 45-18.3N 036-28.8E. 2. CANCEL HYDROLANT 3232/17. 3. CANCEL THIS MSG 140400Z OCT 17.
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.
- Chart reference
- The number of the nautical chart on which the reported position lies.
- Navigation prohibited
- Ships may not enter or pass through the area, or a port is closed to traffic.
- 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 · restricted areas & port closures
56 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.
- Navigation prohibited until 292100Z oct in areas bound by: a. 44-54N 036-18E, 45-43N 036-18E, 45-43N…2019-10-27
- Mine, navigation prohibited in area within one mile of 45-06.14N 036-36.30E2019-06-26
- Navigation prohibited 130500Z may to 100600Z jun in area bound by 44-39.48N 037-47.28E, 44-39.42N…2019-05-10
- Navigation prohibited 130900Z mar until further notice in area bound by 44-23.2N 033-46.6E, 44-23.2N…2018-03-12
- Navigation prohibited 110600Z to 140600Z oct in area bound by 45-20.4N 036-28.3E, 45-20.0N 036-30.9E,…2017-10-10
- Navigation prohibited 051800Z to 122359Z oct in area bound by 44-22.7N 033-44.1E, 44-22.7N 033-46.0E,…2017-10-05
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
2 restricted areas & port closures listed in force · see all
Record snapshot 2026-10-01 08:23Z; 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.