Survey operations in progress until 25 jul by M/V denar in area bound by 40-19.2N 026 35.1E, 40-20.2N…
Sea of Marmara · HYDROLANT 2074/19
What this record establishes
Archived notice · 2019-07-22 09:27Z
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) · TURKEY 130/19 100817Z JUL 19.. Issued 2019-07-10 10:30Z. 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 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
- Cancel HYDROLANT 2074/19 and this msglater cancellation notice
Current notices and reporting history in the Sea of Marmara →
- issued
- 2019-07-10 10:30Z
- status
- Archived notice
- authority
- TURKEY 130/19 100817Z JUL 19.
- issued by
- TURKEY
- sea
- Sea of Marmara
- position
- 40.316, 26.611
- vessel
- M/V DENAR
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
CANAKKALE BOGAZI. DNC 09. 1. SURVEY OPERATIONS IN PROGRESS UNTIL 25 JUL BY M/V DENAR IN AREA BOUND BY 40-19.2N 026 35.1E, 40-20.2N 026-36.2E, 40-18.9N 026 38.2E, 40-17.7N 026-37.0E. WIDE BERTH REQUESTED. 2. CANCEL THIS MSG 26 JUL 19.
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.
- Survey operations
- A research or survey vessel is mapping the seabed or water column, often while towing equipment.
- 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.
- 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
133 within 180 nm since 1999 · 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.
- Survey operations in progress until 14 jun by M/V tcg cesme in areas bound by a. 38-55.93N 025-24.97E,…2022-05-28
- Survey operations 23 mar thru 15 apr by M/V tubitak marmara and M/V tubitak mam in area bound by 40-03.20N…2021-03-22
- Survey operations 18 feb thru 02 mar by M/V tcg cesme in area bound by 40-00.94N 024-52.91E, 39-40.83N…2021-02-16
- Underwater operations in progress until 19 nov by M/V aegaeo a. 15 nov in 39-53.48N 025-15.05E2020-11-15
- Survey operations in progress until 18 nov by M/V aegaeo a. 13 nov in area bound by 40-36.42N 022-54.25E,…2020-11-13
- Underwater operations in progress until 30 nov by M/V detek salvor in position 41-01.3N 029-00.0E2020-11-05
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
56 survey operations listed in force · see all
Record snapshot 2026-10-03 00:47Z; 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.