The bosporus will be closed 0100Z to 1700Z daily 09, 12, 19 and 22 aug in order to place guide ropes and…
Sea of Marmara · HYDROLANT 1653/99
What this record establishes
Archived notice · 1999-08-22 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 342/99 071401Z AUG 99. Issued 1999-08-07 18:45Z. 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 Marmara. The map shows the reported line or operation extent; it is not a vessel track. Check the original wording for limits and qualifications.
Current notices and reporting history in the Sea of Marmara →
- issued
- 1999-08-07 18:45Z
- status
- Archived notice
- self-cancels
- 1999-08-22 18:00Z
- authority
- NAVAREA III 342/99 071401Z AUG 99
- NAVAREA
- NAVAREA III · named as the source of this relay
- sea
- Sea of Marmara
- position
- 41.172, 29.077
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
1. THE BOSPORUS WILL BE CLOSED 0100Z TO 1700Z DAILY 09, 12, 19 AND 22 AUG IN ORDER TO PLACE GUIDE ROPES AND HIGH VOLTAGE CABLES BETWEEN 41-10.1N 029-04.9E AND 41-10.5N 029-04.3E. 2. CANCEL THIS MSG 221800Z AUG.
Reading this warning
- 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.
- 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.
Collected reports in this area · other warnings
21 within 180 nm since 1999 · 1 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.
- Maritime exercises 070500Z to 072059Z, 0500Z to 1500Z and 1600Z to 2059Z daily 08 and 09 sep in area bound…2026-09-01
- Naval operations 14 thru 17 may in area bound by 44-05.90N 028-56.10E, 44-05.90N 028-54.65E, 44-05.00N…2024-05-09
- Hazardous operation 240500Z to 241500Z, 0500Z to 1500Z and 1800Z to 2100Z daily 25 thru 27 jun in area…2019-06-20
- Subsurface odas moorings established in: a. 43-57.73N 028-42.72E, at depth 33.2 meters2017-08-25
- Port of burgas (42-30N 027-28E) closed 151400Z to 1151630Z jul2016-07-14
- Port of burgas (42-30N 027-28E) closed 120430Z to 120830Z jul2016-07-11
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
- Drilling operations by fatih platform (imo 9503770Surveys · 77.9 nm
Worldwide in the collected sources
23 other warnings listed in force · see all
Record snapshot 2026-09-28 23:44Z; 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.