Seismic survey in progress until 06 apr by M/V balikli 1 between kumkapi (40-59.8N 028-58.0E) and harem…
Sea of Marmara · HYDROLANT 525/07
What this record establishes
Archived notice · 2007-04-07 00:00Z
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 138/07 021714Z APR 07.. Issued 2007-04-02 17:57Z. 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
- 2007-04-02 17:57Z
- status
- Archived notice
- authority
- NAVAREA III 138/07 021714Z APR 07.
- NAVAREA
- NAVAREA III · named as the source of this relay
- sea
- Sea of Marmara
- position
- 41.002, 28.985
- vessel
- M/V BALIKLI 1
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
1. SEISMIC SURVEY IN PROGRESS UNTIL 06 APR BY M/V BALIKLI 1 BETWEEN KUMKAPI (40-59.8N 028-58.0E) AND HAREM (41-00.4N 029-00.2E). WIDE BERTH REQUESTED. 2. CANCEL THIS MSG 07 APR.
Reading this warning
- Seismic survey
- A survey that maps the rock beneath the seabed with sound pulses from air guns, recorded on streamers kilometres long.
- 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 · cable & pipeline work
106 within 180 nm since 1999 · 4 in the last 12 months · 2 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.
- Pipeline operations in progress until 30 oct in area bound by 43-49.77N 028-37.27E, 43-47.98N 028-37.00E,…2026-09-22
- Cable operations until further notice by cableship sophie germain in area bound by 40-40.27N 027-15.72E,…2026-08-31
- Pipeline operations 05 jun thru 07 oct by M/V oruc reis, M/V mukavemet, M/V zaganos pasa, M/V denar…2026-06-04
- Pipeline operations in progress until 07 oct 26 by M/V mukavemet, M/V oruc rei̇s, M/V dina polaris, M/V…2025-10-07
- Pipeline operations in progress until 212059Z feb 23 by M/V seven pegasus, M/V castorone, M/V simon stevin,…2022-11-01
- Cable operations 030001Z to 190001Z jan by cableship raymond croze with submersible in areas bound by: a.…2022-01-01
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 · 88.4 nm
Worldwide in the collected sources
25 cable & pipeline work listed in force · see all
Record snapshot 2026-09-29 20:25Z; source collection times vary.
Cable ops
Cable laying, pipeline and seismic operations. All current cable & pipeline work →
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.