Survey operations 01 oct until further notice by M/V aigaio in area bound by 36-04.85N 027-37.91E, 36-11.60N…
Aegean Sea · HYDROLANT 2954/20
What this record establishes
Archived notice · 2020-10-07 11:41Z
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 1293/20 291153Z SEP 20.. Issued 2020-09-29 12:16Z. 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
- Aegean Sea. 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 2744/20, 2954/20 and this msglater cancellation notice
- issued
- 2020-09-29 12:16Z
- status
- Archived notice
- authority
- NAVAREA III 1293/20 291153Z SEP 20.
- NAVAREA
- NAVAREA III · named as the source of this relay
- sea
- Aegean Sea
- position
- 36.180, 27.928
- vessel
- M/V AIGAIO · 21 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
EASTERN MEDITERRANEAN SEA. AEGEAN SEA. DNC 10. SURVEY OPERATIONS 01 OCT UNTIL FURTHER NOTICE BY M/V AIGAIO IN AREA BOUND BY 36-04.85N 027-37.91E, 36-11.60N 027-29.83E, 36-16.13N 027-29.91E, 36-32.46N 028-15.31E, 36-26.24N 028-21.22E, 35-59.76N 028-10.05E, 35-56.85N 028-00.23E, 35-47.67N 027-47.79E, 35-50.78N 027-39.24E, 35-58.71N 027-36.12E. WIDE BERTH REQUESTED.
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.
- Until further notice
- The operation or danger has no scheduled end; the warning stays in force until a later message cancels it.
- 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.
Collected reports in this area · survey operations
188 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 l'atalante: a. 15 apr in area bound by 33-53.47N 026-08.62E, 33-45.60N 026-09.25E,…2021-04-15
- Underwater operations 16 and 17 mar by M/V ievoli ivory along trackline joining 36-12.4N 024-19.9E, 36-01.0N…2021-03-15
- Survey operations 222101Z dec to 152059Z jun 21 by M/V orucreis, M/V ataman and M/V cengizhan in area bound…2020-12-28
- Underwater operations in progress until further notice by M/V ievoli ivory along trackline joining 36-28.30N…2020-12-24
- Survey operations 222101Z dec to 152059Z jun 21 by M/V orucreis, M/V ataman and M/V cengizhan in area bound…2020-12-23
- Underwater operations in progress until further notice by M/V ievoli ivory along trackline joining 36-35.14N…2020-12-21
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 2026-10-01 14:39Z; 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.