Surveys

Oceanographic operations in progress until 23 aug by M/V urania, along trackline joining 37-15.2N 000-04.4E,…

Mediterranean Sea - Western Basin · HYDROLANT 1928/12

What this record establishes

Archived notice · 2012-08-24 00:01Z

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 337/12 210921Z AUG 12 - SHGA 21 AUG 12.. Issued 2012-08-21 11:55Z. 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 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 Mediterranean Sea - Western Basin →

issued
2012-08-21 11:55Z
status
Archived notice
authority
NAVAREA III 337/12 210921Z AUG 12 - SHGA 21 AUG 12.
NAVAREA
NAVAREA III · named as the source of this relay
sea
Mediterranean Sea - Western Basin
position
38.082, 4.359
vessel
M/V URANIA · 135 messages
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

WESTERN MEDITERRANEAN SEA.
1. OCEANOGRAPHIC OPERATIONS IN PROGRESS UNTIL 23 AUG
   BY M/V URANIA, ALONG TRACKLINE JOINING
   37-15.2N 000-04.4E, 38-25.0N 005-15.0E,
   38-39.3N 005-40.0E, 38-13.8N 008-39.6E.
2. CANCEL HYDROLANT 1925/12(24).
3. CANCEL THIS MSG 24 AUG 12.

Reading this warning

Track line joining
Introduces a route through a series of positions — a cable route, a tow's track or a survey line.
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.
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.

All warning terms →

Collected reports in this area · survey operations

51 within 180 nm since 2000 · 0 in the last 12 months · 0 listed in force now

00
05
10
15
20
24

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.

Month of issue in the collected archive

J
F
M
A
M
J
J
A
S
O
N
D

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

Worldwide in the collected sources

56 survey operations listed in force · see all

Record snapshot 2026-10-02 21:18Z; 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.