Exercises
Hazardous operations
Western South Atlantic · Brazil-southeast Coast · HYDROLANT 3139/16
- issued
- 2016-11-24 10:23Z
- status
- cancelled 2016-12-01 22:30Z (archive)
- self-cancels
- 2016-12-01 22:30Z
- authority
- NAVAREA V COASTAL 983/16 240908Z NOV 16.
- sea
- South Atlantic Ocean
- position
- -23.057, -42.037
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
WESTERN SOUTH ATLANTIC. BRAZIL-SOUTHEAST COAST. HAZARDOUS OPERATIONS. DNC 01. 1. HAZARDOUS OPERATIONS 0900Z TO 2130Z DAILY 29 NOV THRU 01 DEC IN AREA BOUND BY 22-58.72S 042-02.15W, 23-01.00S 042-00.00W, 23-07.00S 042-00.00W, 23-07.00S 042-04.48W, 23-01.20S 042-04.48W. 2. CANCEL THIS MSG 012230Z DEC 16.
Activity windows · 3 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2016-11-29 09:00Z | 2016-11-29 21:30Z | — | 12 h 30 |
| 2016-11-30 09:00Z | 2016-11-30 21:30Z | — | 12 h 30 |
| 2016-12-01 09:00Z | 2016-12-01 21:30Z | — | 12 h 30 |
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
629 within 180 nm since 1999 · 2 in the last 12 months · 2 in force now
99
00
05
10
15
20
25
26
- Hazardous operations 0800Z to 2100Z daily 18 thru 20 aug in area within ten miles of 25-06.00S 041-13.00W2026-08-13
- Hazardous operations in progress until 060400Z jun 27 in area bound by 24-39.87S 042-29.30W, 24-39.78S…2026-07-29
- 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
Season · when military exercises happen here
J
F
M
A
M
J
J
A
S
O
N
D
month of issue, all years in the archive
Nearby now · within 120 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 · 54.5 nm
- RACON at cabo sao tome light 22-02.52S 041-03.17W off air until 28 sepNav aids · 81.8 nm
- Underwater operations in progress until 312300Z aug by M/V fugro vaquita in area bound by 21-35.43S…Surveys · 94.4 nm
- Underwater operations 1000Z to 2000Z daily until 02 nov 26 by M/V fugro vaquita in: a. 22-26.32S 040-25.47WSurveys · 96.9 nm
- Underwater operations in progress until 170259Z aug in 22-22.48S 040-25.05WSurveys · 98.6 nm
- Underwater operations 281000Z jul to 192100Z aug by M/V umi polaris in area bound by 21-53.65S 040-49.70W,…Surveys · 98.8 nm
- Hazardous operations in progress until 060400Z jun 27 in area bound by 24-39.87S 042-29.30W, 24-39.78S…Exercises · 99 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 · 99.9 nm
- Odas buoy temporarily established until 13 apr 27 in 21-34.20S 040-43.62WNav aids · 115.2 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.