Surveys

Survey operations 25 may thru 14 jun by M/V urania along tracklines between: a. 38-39.19N 015-53.33E and…

Tyrrhenian Sea · HYDROLANT 893/04

What this record establishes

Archived notice · 2004-06-15 00:00Z

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) · MARISICILIA 182/04 211020B MAY 04; NAVAREA V 472/04 240403Z MAY 04; JRCC PIRAEUS AOR-E EGC 360 230135Z MAY 04. Issued 2004-05-24 06:20Z. 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
Tyrrhenian Sea. The map shows the reported line or operation extent; it is not a vessel track. Check the original wording for limits and qualifications.

Related notices and cancellation links

Current notices and reporting history in the Tyrrhenian Sea →

issued
2004-05-24 06:20Z
status
Archived notice
authority
MARISICILIA 182/04 211020B MAY 04; NAVAREA V 472/04 240403Z MAY 04; JRCC PIRAEUS AOR-E EGC 360 230135Z MAY 04
NAVAREA
NAVAREA V · named as the source of this relay
issued by
MARISICILIA
sea
Tyrrhenian Sea
position
38.597, 12.743
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

1. SURVEY OPERATIONS 25 MAY THRU 14 JUN BY M/V URANIA
   ALONG TRACKLINES BETWEEN:
   A. 38-39.19N 015-53.33E AND 39-52.94N 013-07.27E.
   B. 38-06.75N 013-54.44E AND 39-46.37N 012-39.19E.
   C. 39-29.34N 012-03.14E AND 38-20.39N 012-38.96E.
   D. 38-03.00N 012-05.88E AND 38-39.96N 010-35.76E.
   E. 37-31.79N 012-46.80E AND 36-30.59N 011-24.60E.
   F. 39-45.80N 010-49.06E AND 39-46.43N 011-53.26E.
   G. 37-43.98N 012-19.98E AND 37-10.80N 011-18.24E.
   WIDE BERTH REQUESTED.
2. CANCEL HYDROLANT 870/04(24) AND 880/04(54).
3. CANCEL THIS MSG 15 JUN.

Reading this warning

Survey operations
A research or survey vessel is mapping the seabed or water column, often while towing equipment.
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.
Wide berth requested
Keep well clear — or, when a distance is given ("TWO MILE BERTH REQUESTED"), at least that far away.
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

296 within 180 nm since 1999 · 0 in the last 12 months · 0 listed in force now

99
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

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 02:38Z; 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.