Cable ops

Seismic survey 06 thru 28 jun by M/V urania along trackline joining 40-31.8N 014-20.0E, 41-09.8N 013-29.0E,…

Tyrrhenian Sea · HYDROLANT 1156/99

What this record establishes

Archived notice · 1999-06-18 16:19Z

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 126/99 041306Z JUN 99. Issued 1999-06-05 04:39Z. 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
1999-06-05 04:39Z
status
Archived notice
authority
MARISICILIA 126/99 041306Z JUN 99
issued by
MARISICILIA
sea
Tyrrhenian Sea
position
39.346, 13.654
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. SEISMIC SURVEY 06 THRU 28 JUN BY
   M/V URANIA ALONG TRACKLINE JOINING
   40-31.8N 014-20.0E, 41-09.8N 013-29.0E, 41-07.0N 013-02.8E,
   39-31.0N 015-50.0E, 40-31.8N 014-20.0E, 38-24.8N 015-47.8E,
   39-31.0N 015-50.0E, 38-17.0N 012-56.8E, 38-24.8N 015-47.8E,
   38-08.0N 012-50.0E, 40-12.8N 014-55.0E, 40-37.0N 014-35.8E,
   37-55.0N 011-40.0E, 39-20.0N 013-52.0E, 38-14.0N 014-58.0E,
   38-48.0N 015-57.0E, 39-20.0N 013-52.0E, 39-39.8N 015-45.8E,
   38-58.8N 015-25.0E, 38-08.0N 013-35.0E, 38-04.0N 014-29.0E,
   39-31.0N 015-47.0E, 40-54.0N 013-51.0E, 37-52.0N 010-55.0E,
   38-58.8N 012-46.0E, 39-29.0N 009-42.0E, 40-57.0N 009-49.0E,
   39-20.0N 013-53.0E, 39-32.0N 015-00.0E, 41-12.0N 011-15.0E.
   WIDE BERTH REQUESTED.
2. CANCEL THIS MSG 29 JUN.

Reading this warning

Seismic survey
A survey that maps the rock beneath the seabed with sound pulses from air guns, recorded on streamers kilometres long.
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.
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 · cable & pipeline work

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

99
00
05
10
15
20
21

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

25 cable & pipeline work listed in force · see all

Record snapshot 2026-09-29 19:41Z; source collection times vary.

Cable ops

Cable laying, pipeline and seismic operations. All current cable & pipeline work →

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.