Survey operations 222101Z dec to 152059Z jun 21 by M/V orucreis, M/V ataman and M/V cengizhan in area bound…
Mediterranean Sea - Eastern Basin · HYDROLANT 3957/20
What this record establishes
Archived notice · 2020-12-28 11:27Z
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) · NAVAREA III 1716/20 231306Z DEC 20.. Issued 2020-12-23 13:26Z. 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
- Mediterranean Sea - Eastern Basin. 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
Current notices and reporting history in the Mediterranean Sea - Eastern Basin →
Activity windows · 1 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2020-12-22 21:01Z | 2021-06-15 20:59Z | — | 4199 h 58 |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2020-12-23 13:26Z
- status
- Archived notice
- self-cancels
- 2021-06-15 21:59Z
- authority
- NAVAREA III 1716/20 231306Z DEC 20.
- NAVAREA
- NAVAREA III · named as the source of this relay
- sea
- Mediterranean Sea - Eastern Basin
- position
- 36.353, 31.111
- vessels
- M/V ATAMAN · 27 messagesM/V CENGIZHAN · 2 messagesM/V ORUCREIS · 3 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
EASTERN MEDITERRANEAN SEA. TURKEY. DNC 10. 1. SURVEY OPERATIONS 222101Z DEC TO 152059Z JUN 21 BY M/V ORUCREIS, M/V ATAMAN AND M/V CENGIZHAN IN AREA BOUND BY 36-27.43N 030-34.37E, 35-53.85N 031-03.72E, 36-16.17N 031-38.63E, 36-47.82N 031-10.38E. SIX MILE BERTH REQUESTED. 2. CANCEL THIS MSG 152159Z JUN 21.
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.
- 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.
- 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
152 within 180 nm since 2000 · 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 by M/V BILIM-2 in progress until 04 jul along tracklines joining: a. 36-04.51N 033-13.95E,…2022-06-30
- Survey operations in progress until 21 jan by M/V nautical geo in area bound by 34-20.64N 031-26.41E,…2022-01-15
- Survey operations in progress until 11 jan 22 by M/V nautical geo in area bound by 33-56.5N 032-25.0E,…2022-01-04
- Survey operations in progress until 11 jan 22 by M/V odin finder in area bound by 33-56.5N 032-25.0E,…2021-12-23
- Underwater operations in progress until 30 jan 22 in area bound by 33-37N 031-22E, 33-37N 032-11E, 33-17N…2021-11-20
- Survey operations in progress until 17 nov by M/V nautical geo in area bound by 34-18.65N 033-08.20E,…2021-11-12
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
50 survey operations listed in force · see all
Record snapshot 2026-09-25 09:46Z; 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.