Ordnance

Underwater ordnance detonations 060700Z to 061600Z jun, alternate 070700Z to 071600Z and 080700Z to 081600Z…

Tyrrhenian Sea · HYDROLANT 2025/00

What this record establishes

Archived notice · 2000-06-08 17:00Z

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) · MARISARDEGNA 084/00 050930B JUN 00. Issued 2000-06-05 20:12Z. 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 41.308, 9.508 with a 2.2 nm radius. 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 · 3 in this warning

opens (UTC)	closes (UTC)	local	length
2000-06-06 07:00Z	2000-06-06 16:00Z	—	9 h
2000-06-07 07:00Z	2000-06-07 16:00Z	—	9 h
2000-06-08 07:00Z	2000-06-08 16:00Z	—	9 h

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

issued: 2000-06-05 20:12Z
status: Archived notice
self-cancels: 2000-06-08 17:00Z
authority: MARISARDEGNA 084/00 050930B JUN 00
issued by: MARISARDEGNA
sea: Tyrrhenian Sea
position: 41.308, 9.508 · r 2.2 nm
source: NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

1. UNDERWATER ORDNANCE DETONATIONS 060700Z TO 061600Z JUN,
   ALTERNATE 070700Z TO 071600Z AND 080700Z TO 081600Z JUN
   WITHIN 4000 METERS OF 41-18-30N 009-30-30E.
2. CANCEL THIS MSG 081700Z JUN.

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.
Within a radius of: A circular area — every position within a stated distance of a point.
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

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

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 15:15Z; 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.