Underwater operations in progress until 24 mar 13 by M/V deep blue and M/V alesta dalgiclik vicinity of…
Sea of Marmara · HYDROLANT 2021/12
What this record establishes
Archived notice · 2012-09-13 12:44Z
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 354/12 011214Z SEP 12.. Issued 2012-09-01 12:44Z. 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.
Related notices and cancellation links
Current notices and reporting history in the Sea of Marmara →
- issued
- 2012-09-01 12:44Z
- status
- Archived notice
- authority
- NAVAREA III 354/12 011214Z SEP 12.
- NAVAREA
- NAVAREA III · named as the source of this relay
- sea
- Sea of Marmara
- position
- 40.896, 28.936
- vessels
- M/V ALESTA DALGICLIK · 2 messagesM/V DEEP BLUE · 4 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
SEA OF MARMARA. 1. UNDERWATER OPERATIONS IN PROGRESS UNTIL 24 MAR 13 BY M/V DEEP BLUE AND M/V ALESTA DALGICLIK VICINITY OF TRACKLINE JOINING 40-57.89N 028-41.43E, 40-56.74N 028-42.33E, 40-55.51N 028-50.89E, 40-53.82N 028-57.80E, 40-50.01N 029-07.13E, 40-50.76N 029-11.13E. WIDE BERTH REQUESTED. 2. CANCEL THIS MSG 25 MAR 13.
Reading this warning
- Underwater operations
- Divers or remotely operated vehicles are working below a vessel that cannot easily move out of the way.
- 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.
- Wide berth requested
- Keep well clear — or, when a distance is given ("TWO MILE BERTH REQUESTED"), at least that far away.
- CANCEL THIS MSG
- The warning's own expiry: a line telling the reader when the message cancels itself.
Collected reports in this area · survey operations
134 within 180 nm since 1999 · 9 in the last 12 months · 5 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.
- 1- drilling operations by yildirim rig (imo 9705469, mmsi 271053959), supported by ertugrul bey, aybuke,…2026-09-12
- Drilling operations by fatih platform (imo 95037702026-09-03
- Drilling operations by yavuz rig (imo 9503768, mmsi 271046765) supported by osman bey, aybuke, florya,…2026-08-27
- Drilling operations by the kanuni platform (imo 95412032026-08-17
- 1- drilling operations by abdulhamid han rig (imo 97050932026-08-17
- 1- drilling operations by yildirim rig (imo 9705469, mmsi 271053959), supported by ertugrul bey, aybuke,…2026-08-11
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 · 94.8 nm
Worldwide in the collected sources
56 survey operations listed in force · see all
Record snapshot 2026-10-03 02:05Z; source collection times vary.
Surveys
Hydrographic and scientific survey vessels, often towing long arrays. All current survey operations →
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.