Ordnance

Underwater ordnance detonations 110600Z to 111600Z jan in 41-17.2N 009-30.6E

Tyrrhenian Sea · HYDROLANT 92/00

What this record establishes

Archived notice · 2000-01-11 10:10Z

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) · MARISARDEGNA 004/00 101030Z JAN 00. Issued 2000-01-10 15:30Z. 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 parsed report position is 41.287, 9.510. It is a position in the source message, not a live location. Check the original wording for limits and qualifications.

Current notices and reporting history in the Tyrrhenian Sea →

Activity windows · 1 in this warning

opens (UTC)closes (UTC)locallength
2000-01-11 06:00Z2000-01-11 16:00Z—10 h

Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.

issued
2000-01-10 15:30Z
status
Archived notice
self-cancels
2000-01-11 17:00Z
authority
MARISARDEGNA 004/00 101030Z JAN 00
issued by
MARISARDEGNA
sea
Tyrrhenian Sea
position
41.287, 9.510
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

1. UNDERWATER ORDNANCE DETONATIONS 110600Z TO 111600Z JAN
   IN 41-17.2N 009-30.6E.
2. CANCEL THIS MSG 111700Z JAN.

Reading this warning

Unexploded ordnance
Bombs, shells, mines or torpedoes found on the seabed or washed up, and the operations to remove or destroy them.
Date-time group (DTG)
A compact UTC timestamp — day, hour and minute followed by Z — such as 201500Z for the 20th at 15:00 UTC.
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.
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 · ordnance operations

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

99
00
05
06

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 ordnance operations listed in force · see all

Record snapshot 2026-10-03 17:21Z; source collection times vary.

Ordnance

Ordnance disposal, underwater detonations and unexploded ordnance. All current ordnance 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.