Exercises
Hazardous operations 210800Z to 240900Z dec in area bound by 25-21.00S 046-26.00W, 25-28.00S 046-38.87W,…
Western South Atlantic · Brazil-south Coast · HYDROLANT 3977/18
- issued
- 2018-12-21 02:58Z
- status
- cancelled 2018-12-24 10:00Z (archive)
- self-cancels
- 2018-12-24 10:00Z
- cancels
- HYDROLANT 3948/18
- authority
- NAVAREA V COASTAL S 965/18 210231Z NOV 18.
- sea
- South Atlantic Ocean
- position
- -25.720, -46.228
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
WESTERN SOUTH ATLANTIC. BRAZIL-SOUTH COAST. DNC 01. 1. HAZARDOUS OPERATIONS 210800Z TO 240900Z DEC IN AREA BOUND BY 25-21.00S 046-26.00W, 25-28.00S 046-38.87W, 25-54.00S 047-00.00W, 25-38.53S 047-18.15W, 25-17.75S 047-04.24W, 25-05.20S 046-48.05W, 25-07.25S 046-37.67W, 25-01.17S 046-20.87W, 25-01.85S 046-14.60W, 25-56.28S 045-52.48W, 25-56.00S 045-00.00W, 26-36.00S 045-45.00W. 2. CANCEL HYDROLANT 3948/18. 3. CANCEL THIS MSG 241000Z DEC 18.
Activity windows · 1 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2018-12-21 08:00Z | 2018-12-24 09:00Z | — | 73 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
399 within 180 nm since 2004 · 1 in the last 12 months · 0 in force now
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05
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15
20
25
26
- Hazardous operations 250900Z to 272100Z aug in area within seven miles of 24-26.04S 045-39.91W2026-08-20
- Hazardous operations 1100Z to 1700Z daily 21 and 22 feb in area bound by 24-15.00S 044-00.00W, 23-50.00S…2024-02-16
- Hazardous operations 1100Z to 1700Z daily 18 and 19 dec in area bound by 24-15.00S 044-00.00W, 23-50.00S…2023-12-13
- Hazardous operations in progress until 182300Z dec in area bound by 24-51.58S 043-44.93W, 24-16.70S…2023-12-06
- Hazardous operations 041200Z to 082000Z dec in area within 12 miles of 24-22.68S 045-50.95W2023-11-30
- Hazardous operations 1100Z to 2000Z daily 13 nov thru 01 dec in areas within five miles of: a. 24-00.00S…2023-11-09
Season · when military exercises happen here
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A
M
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J
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S
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month of issue, all years in the archive
Timeline
Nearby now · within 120 nm
- Laje da conceicao light 24-14.18S 046-41.46W unlit until 24 sepNav aids · 92.6 nm
- Odas buoy established in 24-06.36S 045-38.78WNav aids · 102 nm
- Scientific bouy, yellow, fl y 20 sec established in 27-24.38S 047-15.92WSurveys · 115.6 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.