Exercises
Hazardous operations 1030Z to 2030Z daily 10 thru 19 mar in area bound by 05-53.68S 035-11.15W, 05-06.75S…
Western South Atlantic · Brazil-northeast Coast · HYDROLANT 636/21
- issued
- 2021-03-05 04:48Z
- status
- cancelled 2021-03-05 09:33Z (archive)
- self-cancels
- 2021-03-19 21:30Z
- authority
- NAVAREA V 98/21 050351Z MAR 21.
- sea
- South Atlantic Ocean
- position
- -5.792, -34.598
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
WESTERN SOUTH ATLANTIC. BRAZIL-NORTHEAST COAST. DNC 01. 1. HAZARDOUS OPERATIONS 1030Z TO 2030Z DAILY 10 THRU 19 MAR IN AREA BOUND BY 05-53.68S 035-11.15W, 05-06.75S 034-36.06W, 05-25.69S 034-18.60W, 05-40.01S 034-12.64W, 05-55.37S 034-10.61W, 06-10.73S 034-12.64W, 06-24.05S 034-18.60W, 05-55.93S 035-11.36W. 2. CANCEL THIS MSG 192130Z MAR 21.
Activity windows · 10 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2021-03-10 10:30Z | 2021-03-10 20:30Z | — | 10 h |
| 2021-03-11 10:30Z | 2021-03-11 20:30Z | — | 10 h |
| 2021-03-12 10:30Z | 2021-03-12 20:30Z | — | 10 h |
| 2021-03-13 10:30Z | 2021-03-13 20:30Z | — | 10 h |
| 2021-03-14 10:30Z | 2021-03-14 20:30Z | — | 10 h |
| 2021-03-15 10:30Z | 2021-03-15 20:30Z | — | 10 h |
| 2021-03-16 10:30Z | 2021-03-16 20:30Z | — | 10 h |
| 2021-03-17 10:30Z | 2021-03-17 20:30Z | — | 10 h |
| … 2 more | |||
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
This area · military exercises
380 within 180 nm since 1999 · 1 in the last 12 months · 1 in force now
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15
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25
26
- Hazardous operations 03 aug thru 11 sep in area bound by 05-42.53S 034-45.02W, 06-09.83S 034-46.82W,…2026-07-29
- Hazardous operations 261300Z to 261900Z feb in area within ten miles of 05-40.00S 034-57.00W2024-02-22
- Hazardous operations 221300Z to 221900Z feb in area within five miles of 05-42.00S 035-01.00W2024-02-19
- Hazardous operations daily 1100Z to 2000Z 06 thru 08 dec in area bound by 05-51.89S 034-54.35W, 05-47.04S…2023-12-01
- Hazardous operations 051100Z to 051500Z dec in area within ten miles of 05-39.00S 034-52.00W2023-12-01
- Hazardous operations 021500Z to 022100Z oct in area within eight miles of 06-18.00S 034-40.00W2023-09-27
Season · when military exercises happen here
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month of issue, all years in the archive
Timeline
- Cancel HYDROLANT 636/21 and this msgcancelled by · 2021-03-05
Nearby now · within 120 nm
Worldwide now
35 military exercises in force · see all
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.