Exercises
Hazardous operations 222300Z to 230800Z aug in area within two miles of 21-52.50S 040-50.30W
South Atlantic · Brazil · HYDROLANT 1635/26
- issued
- 2026-08-21 01:08Z
- status
- cancelled 2026-08-19 18:30Z (dropped from inforce)
- self-cancels
- 2026-08-23 09:00Z
- sea
- South Atlantic Ocean
- position
- -21.875, -40.838 · r 2.0 nm
- source
- nga_inforce · first seen 2026-08-23 13:17Z
Original warning text
SOUTH ATLANTIC. BRAZIL. 1. HAZARDOUS OPERATIONS 222300Z TO 230800Z AUG IN AREA WITHIN TWO MILES OF 21-52.50S 040-50.30W. 2. CANCEL THIS MSG 230900Z AUG 26.
Activity windows · 1 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2026-08-22 23:00Z | 2026-08-23 08:00Z | — | 9 h |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
This area · military exercises
398 within 180 nm since 1999 · 1 in the last 12 months · 0 in force now
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26
- Hazardous operations 220000Z to 252359Z apr in area bound by 23-23.00S 042-15.00W, 23-23.00S 042-45.00W,…2024-04-19
- Hazardous operations 241400Z to 242100Z mar in area bound by 23-40.00S 041-50.00W, 23-40.00S 042-21.00W,…2024-03-19
- Hazardous operations 181300Z to 181900Z mar in area within three miles of 23-02.00S 043-03.00W2024-03-13
- Hazardous operations 132200Z to 140400Z mar in area bound by 23-40.00S 041-50.00W, 23-40.00S 042-21.00W,…2024-03-12
- Hazardous operations 280900Z to 281500Z feb in area within 20 miles of 23-45.00S 041-45.00W2024-02-23
- Hazardous operations 270900Z to 271500Z feb in area within 20 miles of 23-45.00S 041-45.00W2024-02-22
Season · when military exercises happen here
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month of issue, all years in the archive
Nearby now · within 120 nm
- Survey operations in progress until 312200Z aug in area bound by 21-36.17S 041-00.00W, 21-36.05S 040-37.59W,…Surveys · 2.7 nm
- Underwater operations in progress until 312300Z aug by M/V fugro vaquita in area bound by 21-35.43S…Surveys · 5.3 nm
- RACON at cabo sao tome light 22-02.52S 041-03.17W off air until 28 sepNav aids · 15.6 nm
- Barra de itabapoana light 21-18.80S 040-57.90W unlit until 08 sep 26Nav aids · 34.5 nm
- Underwater operations 1000Z to 2000Z daily until 02 nov 26 by M/V fugro vaquita in: a. 22-26.32S 040-25.47WSurveys · 41.4 nm
- Survey operations in progress until 09 jul 27 by M/V bgp dragon towing 250 meter long cable in area bound by…Surveys · 51.1 nm
- Survey operations 10 aug 26 thru 08 mar 27 by tug mce navegacao I in area bound by 22-48.38S 041-08.21W,…Surveys · 59 nm
- Underwater operations in progress until 140001Z nov by M/V fugro vaquita in area bound by 22-03.00S…Surveys · 85.5 nm
- Underwater operations 1100Z to 2100Z daily 13 thru 22 aug by M/V comando b and M/V am kirti in 20-23.90S…Surveys · 96.4 nm
- Underwater operations 1100Z to 2100Z daily 15 thru 29 aug by M/V comando b and M/V rosco banyan in 20-23.37S…Surveys · 96.5 nm
- Underwater operations 1100Z to 2100Z daily 12 thru 21 aug by M/V comando b and M/V faneromeni in 20-23.67S…Surveys · 96.7 nm
- Underwater operations 0800Z to 1800Z daily 08 thru 22 aug by M/V marsanne and M/V comando b in 20-23.57S…Surveys · 97 nm
Worldwide now
23 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.