Hydrographic surveys by M/V geo surveyor: a. 132259Z to 141100Z nov in area bound by 41-51.727N 001-01.705E,…
Mediterranean Sea - Western Basin · HYDROLANT 3829/00
What this record establishes
Archived notice · 2000-11-14 03:15Z
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) · MARDIPART LA SPEZIA #356/00 131632Z NOV 00. Issued 2000-11-13 21:57Z. 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
- Mediterranean Sea - Western Basin. The parsed report position is 41.752, 8.525. It is a position in the source message, not a live location. Check the original wording for limits and qualifications.
Related notices and cancellation links
Current notices and reporting history in the Mediterranean Sea - Western Basin →
Activity windows · 2 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2000-11-13 22:59Z | 2000-11-14 11:00Z | — | 12 h 01 |
| 2000-11-14 11:01Z | 2000-11-16 11:00Z | — | 47 h 59 |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2000-11-13 21:57Z
- status
- Archived notice
- self-cancels
- 2000-11-16 12:00Z
- authority
- MARDIPART LA SPEZIA #356/00 131632Z NOV 00
- issued by
- MARDIPART LA SPEZIA
- sea
- Mediterranean Sea - Western Basin
- position
- 41.752, 8.525
- vessel
- M/V GEO SURVEYOR · 70 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
1. HYDROGRAPHIC SURVEYS BY M/V GEO SURVEYOR:
A. 132259Z TO 141100Z NOV IN AREA BOUND BY
41-51.727N 001-01.705E, 41-40.516N 012-12.632E,
41-40.531N 012-13.556E, 41-40.694N 012-14.543E,
41-41.014N 012-15.387E, 41-41.339N 012-15.908E,
41-43.143N 012-18.182E.
B. 141101Z TO 161100Z NOV ALONG TRACKLINE JOINING
41-16.940N 012-04.800E, 41-21.719N 012-05.762E,
41-30.000N 012-12.000E, 41-38.100N 012-16.240E,
41-42.215N 012-20.390E.
2. CANCEL HYDROLANT 3827/00.
3. CANCEL THIS MSG 161200Z NOV.
Reading this warning
- 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.
- Track line joining
- Introduces a route through a series of positions — a cable route, a tow's track or a survey line.
- Cancellation reference
- A line that cancels an earlier warning by its number, such as CANCEL HYDROLANT 1085/12.
- HYDROLANT
- The U.S. long-range warning series for Atlantic waters outside NAVAREA IV, including the eastern Atlantic, the Mediterranean and adjoining seas.
- 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
236 within 180 nm since 1998 · 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 30 oct by vessel anteos in 39-19.79N 007-50.60E2024-09-03
- Survey operations in progress until 30 jun by M/V ng driller along trackline joining 39-13.99N 007-49.47E,…2024-04-24
- Survey operations in progress until 30 aug by M/V durable along trackline joining 41-22.68N 006-04.83E,…2024-04-24
- Survey operations in progress until 15 apr by M/V ng driller in: a. 39-13.99N 007-49.48E2024-02-01
- Survey operations 22 jul thru 13 aug by M/V tethys II, M/V l`europe, and M/V sagitta III in area bound by…2023-07-20
- Survey operations in progress until 19 jul by M/V five in area bound by 43-49.26N 009-54.46E, 44-09.71N…2023-07-18
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
54 survey operations listed in force · see all
Record snapshot 2026-09-29 20:55Z; 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.