Hazardous operations 210330Z to 210730Z, 0400Z to 0600Z and 0900Z to 1100Z daily 22 thru 25 dec in area…
Bay of Bengal · HYDROPAC 3735/20
What this record establishes
Archived notice · 2020-12-25 12:00Z
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) · NAVAREA VIII 761/20 181018Z DEC 20.. Issued 2020-12-18 10:40Z. 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
- Bay of Bengal. 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
- Cancel HYDROPAC 3473/20, 3735/20 and this msglater cancellation notice
Current notices and reporting history in the Bay of Bengal →
Activity windows · 9 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2020-12-21 03:30Z | 2020-12-21 07:30Z | — | 4 h |
| 2020-12-22 04:00Z | 2020-12-22 06:00Z | — | 2 h |
| 2020-12-22 09:00Z | 2020-12-22 11:00Z | — | 2 h |
| 2020-12-23 04:00Z | 2020-12-23 06:00Z | — | 2 h |
| 2020-12-23 09:00Z | 2020-12-23 11:00Z | — | 2 h |
| 2020-12-24 04:00Z | 2020-12-24 06:00Z | — | 2 h |
| 2020-12-24 09:00Z | 2020-12-24 11:00Z | — | 2 h |
| 2020-12-25 04:00Z | 2020-12-25 06:00Z | — | 2 h |
| … 1 more | |||
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2020-12-18 10:40Z
- status
- Archived notice
- self-cancels
- 2020-12-25 12:00Z
- authority
- NAVAREA VIII 761/20 181018Z DEC 20.
- NAVAREA
- NAVAREA VIII · named as the source of this relay
- sea
- Bay of Bengal
- position
- 21.056, 87.330
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
BAY OF BENGAL. INDIA. DNC 03. 1. HAZARDOUS OPERATIONS 210330Z TO 210730Z, 0400Z TO 0600Z AND 0900Z TO 1100Z DAILY 22 THRU 25 DEC IN AREA BOUND BY 21-19.77N 086-51.78E, 21-01.32N 086-48.18E, 20-30.30N 087-28.08E, 21-01.42N 087-56.10E, 21-32.73N 087-16.65E, 21-27.02N 086-58.75E. 2. CANCEL THIS MSG 251200Z DEC 20.
Reading this warning
- 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.
- 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.
- 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.
- 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.
- 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
884 within 180 nm since 2000 · 16 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 0130Z to 1430Z daily 06 thru 10 oct in area bound by 19-14.60N 084-53.70E, 19-07.39N…2026-10-01
- Hazardous operations 0430Z to 0630Z and 0830Z to 1030Z daily 06 thru 09 oct in area bound by 21-38.67N…2026-10-01
- Hazardous operations in progress until 251829Z sep in area bound by 19-14.60N 084-53.70E, 19-07.39N…2026-09-23
- Hazardous operations 0330Z to 0730Z daily 18 and 19 sep in area bound by 20-35.73N 086-55.12E, 20-48.37N…2026-09-15
- Hazardous operations 061831Z to 121829Z and 131831Z to 191829Z sep in area bound by 19-14.60N 084-53.70E,…2026-09-03
- Hazardous operations 261831Z to 281829Z aug in area bound by 19-14.60N 084-53.70E, 19-07.39N 085-35.94E,…2026-08-26
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 2026-10-02 08:13Z; 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.