Hazardous operations
Ionian Sea · HYDROLANT 20/16
What this record establishes
Archived notice · 2016-04-21 14:30Z
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) · NAVAREA III 11/16 020005Z JAN 16.. Issued 2016-01-02 01:30Z. 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
- Ionian Sea. The parsed report position is 36.706, 21.775 with a 4.0 nm radius. It is a position in the source message, not a live location. Check the original wording for limits and qualifications.
Related notices and cancellation links
- issued
- 2016-01-02 01:30Z
- status
- Archived notice
- authority
- NAVAREA III 11/16 020005Z JAN 16.
- NAVAREA
- NAVAREA III · named as the source of this relay
- sea
- Ionian Sea
- position
- 36.706, 21.775 · r 4.0 nm
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
EASTERN MEDITERRANEAN SEA. IONIAN SEA. GREECE. HAZARDOUS OPERATIONS. DNC 09. 1. HAZARDOUS OPERATIONS SUNRISE TO SUNSET MONDAYS, SUNRISE TO 2100Z DAILY TUESDAY THRU THURSDAY AND SUNRISE TO 1200Z FRIDAYS UNTIL 31 DEC EXCEPT HOLIDAYS WITHIN FOUR MILES OF 36-42.33N 021-46.50E. 2. CANCEL THIS MSG 01 JAN 17.
Reading this warning
- Hazardous operations
- NGA's heading for activities that make an area dangerous — most often rocket launches, space debris and weapons firings, and some open-ended danger areas.
- DNC (Digital Nautical Chart)
- A reference to one of the regions of NGA's Digital Nautical Chart, used to tell the reader which charts a warning affects.
- 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.
Collected reports in this area · military exercises
611 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.
- Hazardous operations sunrise to sunset monday, sunrise to 2100Z tuesday thru thursday and sunrise to 1000Z…2023-01-02
- Hazardous operations 0500Z to 2200Z daily 11, 13, 18, 20, 25 and 27 jan and 01, 03, 08, 10, 15, 17, 22 and…2022-01-10
- Hazardous operations 0500Z to 2100Z daily monday thru thursday and 0500Z to 1300Z fridays 01 jan thru 31 dec…2022-01-04
- Hazardous operations in progress 0500Z to 1300Z daily until 31 dec except saturdays, sundays and holidays in…2022-01-03
- Hazardous operations sunrise to sunset monday, sunrise to 2100Z tuesday thru thursday and sunrise to 1000Z…2022-01-03
- Torpedo exercises 161100Z to 161500Z and 201100Z to 201500Z dec in area bound by 35-08.2N 022-30.0E,…2021-12-13
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
28 military exercises listed in force · see all
Record snapshot 2026-10-01 15:55Z; source collection times vary.
Exercises
Gunnery, firing and naval exercise areas. All current military exercises →
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.