Towing

Geophysical operations 21 dec thru 20 jan by M/V western wave towing 6000 meter long cable in area bound by…

Ionian Sea · HYDROLANT 4173/00

What this record establishes

Archived notice · 2001-01-17 17:39Z

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) · MARIDPART TARANTO 1066/00 200900Z DEC 00; COMAR GUYANE CAYENNE 29/00 201000Z DEC 00. Issued 2000-12-20 12:57Z. 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
Ionian 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

Current notices and reporting history in the Ionian Sea →

issued
2000-12-20 12:57Z
status
Archived notice
authority
MARIDPART TARANTO 1066/00 200900Z DEC 00; COMAR GUYANE CAYENNE 29/00 201000Z DEC 00
issued by
MARIDPART TARANTO
sea
Ionian Sea
position
39.924, 17.207
vessel
M/V WESTERN WAVE · 12 messages
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

1. GEOPHYSICAL OPERATIONS 21 DEC THRU 20 JAN BY M/V WESTERN WAVE
   TOWING 6000 METER LONG CABLE IN AREA BOUND BY 40-17N 017-45E,
   39-38N 017-23E, 39-38N 017-00E, 39-58N 016-37E.
   WIDE BERTH REQUESTED.
2. CANCEL HYDROLANT 4105/00(24), OPERATIONS COMPLETED.
3. CANCEL THIS MSG 21 JAN 2001.

Reading this warning

Towed array / streamer
Equipment towed a long way behind a vessel — sonar, a hydrophone cable, a sampling sled — invisible at the surface.
Tow / towing
A vessel towing another vessel, a barge or a structure — slow, hard to manoeuvre, and with a long line between.
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.
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 · tows

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

99
00
01

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

0 tows listed in force · see all

Record snapshot 2026-10-03 13:08Z; source collection times vary.

Towing

Vessels under tow with long or unlit tow lines. All current tows →

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.