Military exercises in the South Atlantic Ocean
Gunnery, firing and naval exercise areas.
- in force
- 3
- last 12 months
- 4
- vs previous 12 (1)
- +300%
- since 1999
- 1,950
Coverage note: the NGA archive ends 2024-05 and live collection began 2026-08-17. Warnings issued in between are here only if they were still in force when collection started, so 2024–2026 are under-counted.
In force now · 3
- HYDROLANT 1564/26in force2026-08-13Hazardous operations occur daily from August 18 to 20, 0800Z to 2100Z, within ten miles of 25°06'S 041°13'W.South Atlantic
- HYDROLANT 1462/26in force2026-07-29Hazardous operations are occurring off Brazil in a bounded area from August 3 through September 11.South Atlantic · Brazil
- HYDROLANT 1457/26in force2026-07-29Hazardous operations are in progress in the South Atlantic until 060400Z June 27 near 24-39S 042-30W; two-mile berth requested.South Atlantic
Longest in force
- HYDROLANT 1457/26in force2026-07-29 · 24 dHazardous operations are in progress in the South Atlantic until 060400Z June 27 near 24-39S 042-30W; two-mile berth requested.South Atlantic
- HYDROLANT 1462/26in force2026-07-29 · 24 dHazardous operations are occurring off Brazil in a bounded area from August 3 through September 11.South Atlantic · Brazil
- HYDROLANT 1564/26in force2026-08-13 · 9 dHazardous operations occur daily from August 18 to 20, 0800Z to 2100Z, within ten miles of 25°06'S 041°13'W.South Atlantic
By month (all years)
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Other hazards in the South Atlantic Ocean
Archive · 1,947 cancelled
- HYDROLANT 1413/232023-06-24 → 2023-06-29Hazardous operations 290300Z to 291600Z jun in area bound by 32-24.20S 052-04.30W, 32-22.40S 052-14.10W,…Western South Atlantic · Brazil
- HYDROLANT 1412/232023-06-24 → 2023-06-29Hazardous operations 291400Z to 292000Z jun in area bound by 24-05.00S 043-35.00W, 23-45.00S 043-35.00W,…Western South Atlantic · Brazil
- HYDROLANT 1398/232023-06-23 → 2023-06-30Hazardous operations 270800Z to 301800Z jun in area within ten miles of 23-34.29S 043-02.40WWestern South Atlantic · Brazil
- HYDROLANT 1397/232023-06-23 → 2023-06-27Hazardous operations in progress until 271900Z jun in area within ten miles of 13-20.00S 038-15.00WWestern South Atlantic · Brazil
- HYDROLANT 1386/232023-06-22 → 2023-07-09Hazardous operations 271200Z jun to 082359Z jul in area bound by 24-17.00S 043-00.00W, 24-17.00S 043-38.00W,…Western South Atlantic · Brazil
- HYDROLANT 1367/232023-06-20 → 2023-06-23Hazardous operations 220900Z to 241900Z jun in area within ten miles of 13-20.00S 038-15.00WWestern South Atlantic · Brazil
- HYDROLANT 1345/232023-06-17 → 2023-06-19Hazardous operations 220900Z to 221500Z jun in area within ten miles of 05-51.00S 034-55.00WWestern South Atlantic · Brazil
- HYDROLANT 1331/232023-06-15 → 2023-06-19Hazardous operations 190900Z to 191900Z jun in area within ten miles of 13-00.00S 037-43.00WWestern South Atlantic · Brazil
- HYDROLANT 1315/232023-06-14 → 2023-06-21Hazardous operations 1100Z to 2100Z daily 19 thru 21 jun in area bound by 24-15.00S 044-00.00W, 23-50.00S…Western South Atlantic · Brazil
- NAVAREA IV 646/232023-06-12 → 2023-06-17Hazardous operations 141140Z to 170029Z jun in areas bound by: a. 28-39.00N 076-31.00W, 29-09.00N…Atlantic Ocean
- HYDROLANT 1302/232023-06-12 → 2023-06-17Hazardous operations 141140Z to 170029Z jun in areas bound by: a. 28-39.00N 076-31.00W, 29-09.00N…Atlantic Ocean
- HYDROLANT 1278/232023-06-09 → 2023-06-14Hazardous operations 140800Z to 142000Z jun in area within ten miles of 05-36.00S 034-48.00WWestern South Atlantic · Brazil
- HYDROLANT 1268/232023-06-07 → 2023-06-13Hazardous operations 1300Z to 1800Z daily 12 and 13 jun in area bound by 13-20.58S 038-16.30W, 13-20.58S…Western South Atlantic · Brazil
- HYDROLANT 1257/232023-06-07 → 2023-06-12Hazardous operations 111400Z to 121500Z jun in areas bound by: a. 22-58.00S 043-09.50W, 22-58.00S…Western South Atlantic · Brazil
- HYDROLANT 1256/232023-06-07 → 2023-06-11Hazardous operations 111330Z to 111500Z jun: a. in area bound by 23-02.00S 043-27.50W, 23-01.10S 043-17.20W,…Western South Atlantic · Brazil
- HYDROLANT 1184/232023-05-27 → 2023-06-01Hazardous operations 011000Z to 012100Z jun in area within six miles of 23-33.00S 043-08.00WWestern South Atlantic · Brazil
- HYDROLANT 1183/232023-05-27 → 2023-06-01Hazardous operations 010800Z to 012000Z jun in area within 15 miles of 13-31.00S 038-19.00WWestern South Atlantic · Brazil
- HYDROLANT 1182/232023-05-27 → 2023-06-13Hazardous operations 011200Z to 122359Z jun in area bound by 24-02.80S 043-55.80W, 24-02.80S 043-23.10W,…Western South Atlantic · Brazil
- HYDROLANT 1152/232023-05-25 → 2023-05-30Hazardous operations 301300Z to 301800Z may in area bound by 13-30.53S 038-26.33W, 13-20.58S 038-26.33W,…Western South Atlantic · Brazil
- HYDROLANT 1140/232023-05-24 → 2023-05-29Hazardous operations 291300Z to 291800Z may in area bound by 13-30.53S 038-26.33W, 13-20.58S 038-26.33W,…Western South Atlantic · Brazil
- HYDROLANT 1139/232023-05-24 → 2023-05-29Hazardous operations 291100Z to 291500Z may in area bound by 23-50.00S 043-16.70W, 23-50.00S 044-00.00W,…Western South Atlantic · Brazil
- HYDROLANT 1101/232023-05-19 → 2023-05-25Hazardous operations 241100Z to 251700Z may in area bound by 23-50.00S 042-30.00W, 23-50.00S 043-00.00W,…Western South Atlantic · Brazil
- HYDROLANT 1026/232023-05-10 → 2023-05-19Hazardous operations 0800Z to 2200Z daily 15 thru 19 may in area bound by 24-30.00S 040-03.00W, 24-20.00S…Western South Atlantic
- HYDROLANT 1010/232023-05-08 → 2023-05-18Hazardous operations in progress along trackline joining 28-26.50S 015-47.90E, 28-27.70S 015-48.40EEastern South Atlantic · Namibia · South Africa
- HYDROLANT 998/232023-05-08 → 2023-05-12Hazardous operations 121000Z to 121600Z may in area bound by 23-25.00S 042-46.50W, 23-29.50S 042-56.50W,…Western South Atlantic · Brazil
- HYDROLANT 962/232023-05-04 → 2023-05-09Hazardous operations 091000Z to 091600Z may in area bound by 23-56.00S 042-10.00W, 24-03.50S 042-17.50W,…Western South Atlantic · Brazil
- HYDROLANT 950/232023-05-03 → 2023-05-12Hazardous operations 0800Z to 2200Z daily 08 thru 12 may in area bound by 24-20.00S 040-32.00W, 24-30.00S…Western South Atlantic
- HYDROLANT 919/232023-04-29 → 2023-05-11Hazardous operations 041200Z to 102359Z may in area bound by 24-02.80S 043-55.80W, 24-02.80S 043-23.10W,…Western South Atlantic · Brazil
- HYDROLANT 858/232023-04-21 → 2023-05-13Hazardous operations 260001Z apr to 130001Z may in area bound by 26-59.82S 046-22.87W, 26-59.82S 047-54.87W,…Western South Atlantic · Brazil
- HYDROLANT 857/232023-04-21 → 2023-04-21Hazardous operations 260001Z apr to 130001Z may in area bound by 26-59.82S 046-22.87W, 26-59.82S 047-54.87W,…Western South Atlantic · Brazil
- HYDROLANT 843/232023-04-20 → 2023-04-28Hazardous operations 0800Z to 2200Z daily 24 thru 28 apr in area bound by 24-30.00S 040-03.00W, 24-20.00S…Western South Atlantic
- HYDROLANT 791/232023-04-13 → 2023-04-14Hazardous operations 130300Z to 140300Z apr in area bound by 23-16.20S 044-03.60W, 23-16.20S 044-00.35W,…Western South Atlantic · Brazil
- HYDROLANT 782/232023-04-12 → 2023-04-21Hazardous operations 0800Z to 2200Z daily 17 thru 21 apr in area bound by 24-30.00S 040-03.00W, 24-20.00S…Western South Atlantic
- HYDROLANT 743/232023-04-06 → 2023-04-15Hazardous operations 101100Z to 152000Z apr in area bound by 23-10.00S 042-45.10W, 22-56.20S 042-45.10W,…Western South Atlantic · Brazil
- HYDROLANT 734/232023-04-05 → 2023-04-14Hazardous operations 0800Z to 2200Z daily 10 thru 14 apr in area bound by 24-30.00S 040-03.00W, 24-20.00S…Western South Atlantic
- HYDROLANT 655/232023-03-25 → 2023-03-30Hazardous operations 290300Z to 292300Z mar in area bound by 32-24.20S 052-04.30W, 32-22.40S 052-12.40W,…Western South Atlantic · Brazil
- HYDROLANT 652/232023-03-24 → 2023-03-31Hazardous operations 281100Z to 312000Z mar in area bound by 23-10.00S 042-12.50W, 23-10.00S 042-45.10W,…Western South Atlantic · Brazil
- HYDROLANT 638/232023-03-23 → 2023-04-04Hazardous operations 281200Z mar to 032359Z apr in area bound by 24-32.80S 043-55.80W, 24-02.80S 043-55.80W,…Western South Atlantic · Brazil
- HYDROLANT 556/232023-03-13 → 2023-03-23Hazardous operations 150800Z to 222359Z mar in area bound by 24-02.80S 043-23.10W, 24-02.80S 043-55.80W,…Western South Atlantic · Brazil
- HYDROLANT 519/232023-03-08 → 2023-03-13Hazardous operations 130800Z to 172359Z mar in area bound by 24-02.80S 043-23.10W, 24-02.80S 043-55.80W,…Western South Atlantic · Brazil
- HYDROLANT 415/232023-02-23 → 2023-03-11Hazardous operations 281200Z feb to 102359Z mar in area bound by 24-02.80S 043-23.10W, 24-02.80S 043-55.80W,…Western South Atlantic · Brazil
- HYDROLANT 255/232023-02-01 → 2023-02-18Hazardous operations 06 thru 17 feb in area bound by 24-02.80S 043-23.10W, 24-02.80S 043-55.80W, 24-22.00S…Western South Atlantic · Brazil
- HYDROLANT 215/232023-01-26 → 2023-01-31Hazardous operations 311000Z to 311600Z jan in area within 15 miles of 24-14.99S 043-50.00WWestern South Atlantic · Brazil
- HYDROLANT 170/232023-01-21 → 2023-01-23Hazardous operations 231900Z to 232100Z jan in area bound by 26-26.50S 047-55.50W, 26-42.00S 047-35.50W,…Western South Atlantic · Brazil
- HYDROLANT 159/232023-01-20 → 2023-01-26Hazardous operations 252200Z to 260200Z jan in area bound by 27-00.00S 043-40.00W, 26-45.00S 043-40.00W,…Western South Atlantic
- HYDROLANT 158/232023-01-20 → 2023-01-25Hazardous operations 251000Z to 252000Z jan in area within 20 miles of 27-00.00S 044-00.00WWestern South Atlantic
- HYDROLANT 150/232023-01-19 → 2023-01-25Hazardous operations 242200Z to 250200Z jan in area bound by 27-28.00S 045-21.50W, 27-35.00S 045-36.00W,…Western South Atlantic
- HYDROLANT 149/232023-01-19 → 2023-01-24Hazardous operations 241000Z to 242000Z jan in area within 20 miles of 28-00.00S 046-00.00WWestern South Atlantic
- HYDROLANT 126/232023-01-15 → 2023-01-19Hazardous operations 191000Z to 191500Z jan in area bound by 24-15.00S 044-00.00W, 23-50.00S 044-00.00W,…Western South Atlantic · Brazil
- HYDROLANT 100/232023-01-12 → 2023-01-17Hazardous operations 171600Z to 172200Z jan in area bound by 23-55.00S 042-38.00W, 23-35.00S 042-38.00W,…Western South Atlantic · Brazil
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts and your national MSI service.