Hazardous operations, space debris 051847Z to 051929Z dec, alternate 071759Z to 071841Z dec in area bound by…
Indian Ocean · HYDROPAC 4323/18
What this record establishes
Archived notice · 2018-12-07 19:41Z
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 XIV 169/18 050245Z DEC 18.. Issued 2018-12-05 05:22Z. 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
- Indian Ocean. 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
- Hazardous operations, space debris 041910Z to 041952Z dec, alternate 051847Z to 051929Z dec in area bound by…cancelled by this notice
These reports were linked by category and sea, with positions within 30 nautical miles and issue dates within 30 days of another report's recorded in-force span. Links can extend through other members, so the full group can cover a larger area or period. Proximity does not confirm that they describe one incident.
- HYDROPAC 4267/182018-11-30 · Archived notice
- HYDROPAC 4323/18 · this notice2018-12-05 · Archived notice
Activity windows · 2 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2018-12-05 18:47Z | 2018-12-05 19:29Z | — | 42 min |
| 2018-12-07 17:59Z | 2018-12-07 18:41Z | — | 42 min |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2018-12-05 05:22Z
- status
- Archived notice
- self-cancels
- 2018-12-07 19:41Z
- authority
- NAVAREA XIV 169/18 050245Z DEC 18.
- NAVAREA
- NAVAREA XIV · named as the source of this relay
- sea
- Indian Ocean
- position
- -46.800, 127.473
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
SOUTHEASTERN INDIAN OCEAN. WESTERN SOUTH PACIFIC. DNC 03, DNC 04, DNC 06. 1. HAZARDOUS OPERATIONS, SPACE DEBRIS 051847Z TO 051929Z DEC, ALTERNATE 071759Z TO 071841Z DEC IN AREA BOUND BY 33-49S 090-53E, 31-31S 092-20E, 43-04S 115-08E, 48-44S 138-14E, 49-43S 168-45E, 51-24S 168-59E, 53-56S 157-53E, 53-37S 135-38E, 48-02S 111-41E, 38-29S 096-28E. 2. CANCEL HYDROPAC 4267/18. 3. CANCEL THIS MSG 071941Z DEC 18.
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.
- Space debris
- An area where parts of a spacecraft or rocket stage are expected to come down at sea, from a launch or a planned re-entry.
- 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.
- Cancellation reference
- A line that cancels an earlier warning by its number, such as CANCEL HYDROLANT 1085/12.
- HYDROPAC
- The U.S. long-range warning series for the Pacific outside NAVAREA XII and for the Indian Ocean, Persian Gulf and adjoining seas.
- CANCEL THIS MSG
- The warning's own expiry: a line telling the reader when the message cancels itself.
Collected reports in this area · missile & rocket hazards
8 within 180 nm since 2017 · 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, space debris 150109Z to 150146Z, alternate 160047Z to 160124Z and 172359Z to 170036Z mar2023-03-12
- Hazardous operations, space debris 0545Z to 0800Z daily 27 feb thru 03 mar in area bound by 41-54.00S…2023-02-24
- Hazardous operations, space debris 1842Z to 2201Z daily 22 nov thru 04 dec within 75 miles of trackline…2022-11-19
- Hazardous operation, space debris 2340Z to 0200Z daily 15 thru 19 jul in area bound by 53-15.00S 146-52.00E,…2022-07-15
- Hazardous operations, space debris 041910Z to 041952Z dec, alternate 051847Z to 051929Z dec in area bound by…2018-11-30
- Hazardous operations space debris 032129Z to 032227Z jun, alternate 042106Z to 042229Z jun in area bound by…2017-06-01
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
4 missile & rocket hazards listed in force · see all
Record snapshot 2026-09-29 11:27Z; source collection times vary.
Missiles
Missile firings, rocket launches and space debris re-entry areas. All current missile & rocket hazards →
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.