Surveys

Survey operations 17 thru 19 jun by M/V jean charcot vicinity of trackline joining 41-53.00N 009-32.00E,…

Tyrrhenian Sea · HYDROLANT 1740/01

What this record establishes

Archived notice · 2001-06-20 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) · LA SPEZIA 563/01 151141Z JUN 01. Issued 2001-06-16 02:26Z. 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
2001-06-16 02:26Z
status
Archived notice
authority
LA SPEZIA 563/01 151141Z JUN 01
issued by
LA SPEZIA
sea
Tyrrhenian Sea
position
41.753, 10.883
vessel
M/V JEAN CHARCOT · 25 messages
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

1. SURVEY OPERATIONS 17 THRU 19 JUN BY M/V JEAN CHARCOT VICINITY
   OF TRACKLINE JOINING 41-53.00N 009-32.00E, 41-50.44N 010-06.44E,
   41-46.44N 010-20.57E, 41-44.81N 010-25.35E, 41-43.77N 010-27.15E,
   41-43.29N 010-27.98E, 41-41.30N 010-30.07E, 41-39.83N 010-33.11E,
   41-39.33N 010-36.90E, 41-39.54N 010-46.47E, 41-40.70N 010-56.61E,
   41-40.44N 010-59.22E, 41-39.46N 011-01.05E, 41-39.09N 011-02.15E,
   41-38.92N 011-03.34E, 41-39.01N 011-04.54E, 41-39.83N 011-07.62E,
   41-41.52N 011-35.49E, 41-42.34N 011-38.75E, 41-44.03N 011-42.20E,
   41-46.22N 011-45.06E, 41-47.76N 011-48.25E, 41-48.71N 011-51.99E,
   41-49.18N 012-00.20E, 41-48.29N 012-07.28E, 41-46.39N 012-13.41E.
2. CANCEL HYDROLANT 1739/01.
3. CANCEL THIS MSG 20 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.
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

193 within 180 nm since 1998 · 0 in the last 12 months · 0 listed in force now

98
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 11:47Z; 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.