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 1099/222022-04-19 → 2022-04-24Hazardous operations 240900Z to 242200Z apr in area within ten miles of 14-22S 038-35WWestern South Atlantic · Brazil-east Coast
- HYDROLANT 1027/222022-04-11 → 2022-05-01Hazardous operations 160001Z to 302359Z apr in area bound by 24-02.8S 043-55.8W, 24-02.8S 043-23.1W,…Western South Atlantic · Brazil-south Coast
- HYDROLANT 1026/222022-04-11 → 2022-05-01Hazardous operations 160001Z to 302359Z apr in area bound by 24-47S 043-56W, 24-23S 043-56W, 24-23S 043-18W,…Western South Atlantic · Brazil-south Coast
- HYDROLANT 940/222022-04-02 → 2022-04-07Hazardous operations 071100Z to 071800Z apr in area within eight miles of 07-56S 034-35WWestern South Atlantic · Brazil-northeast Coast
- HYDROLANT 880/222022-03-28 → 2022-04-11Hazardous operations 010001Z to 152359Z apr in area bound by 24-47S 043-56W, 24-23S 043-56W, 24-23S 043-18W,…Western South Atlantic · Brazil-south Coast
- HYDROLANT 872/222022-03-27 → 2022-04-11Hazardous operations 010001Z to 152359Z apr in area bound by 24-02.8S 043-55.8W, 24-02.8S 043-23.1W,…Western South Atlantic · Brazil-south Coast
- HYDROLANT 769/222022-03-17 → 2022-03-22Hazardous operations 221200Z to 222000Z mar in area bound by 21-04.9S 040-24.8W, 21-02.4S 040-29.5W,…Western South Atlantic · Brazil-southeast Coast
- HYDROLANT 768/222022-03-16 → 2022-03-24Hazardous operations 1600Z to 2000Z daily 21 thru 25 mar in area bound by 05-54.13S 035-10.00W, 05-53.01S…Western South Atlantic · Brazil-northeast Coast
- HYDROLANT 766/222022-03-16 → 2022-03-18Hazardous operations 1600Z to 2000Z daily 16 thru 18 mar in area bound by 05-54.13S 035-10.00W, 05-53.01S…Western South Atlantic · Brazil-northeast Coast
- HYDROLANT 760/222022-03-16 → 2022-03-17Hazardous operations 1600Z to 2000Z daily 21 thru 25 mar in area bound by 05-54.13S 035-10.00W, 05-53.01S…Western South Atlantic · Brazil-northeast Coast
- HYDROLANT 735/222022-03-14 → 2022-04-01Hazardous operations 180001Z to 312359Z mar in area bound by 24-47S 043-56W, 24-23S 043-56W, 24-23S 043-18W,…Western South Atlantic · Brazil-south Coast
- HYDROLANT 723/222022-03-11 → 2022-03-17Hazardous operations 171500Z to 172000Z mar in area within eight miles of 05-27S 035-01WWestern South Atlantic · Brazil-northeast Coast
- HYDROLANT 711/222022-03-11 → 2022-03-16Hazardous operations 161300Z to 162100Z mar in area bound by 13-14S 038-36W, 13-14S 038-26W, 13-24S 038-26W,…Western North Atlantic · Brazil-east Coast
- HYDROLANT 710/222022-03-11 → 2022-03-17Hazardous operations 1600Z to 2000Z daily 16 thru 18 mar in area bound by 05-54.13S 035-10.00W, 05-53.01S…Western North Atlantic · Brazil-northeast Coast
- HYDROLANT 665/222022-03-06 → 2022-03-11Hazardous operations 111500Z to 112100Z mar in area within four miles of 05-47S 034-52WWestern South Atlantic · Brazil-northeast Coast
- HYDROLANT 645/222022-03-04 → 2022-03-19Hazardous operations 090001Z to 312359Z mar in area bound by 24-02.8S 043-55.8W, 24-02.8S 043-23.1W,…Western South Atlantic · Brazil-south Coast
- HYDROLANT 644/222022-03-04 → 2022-03-19Hazardous operations 090001Z to 312359Z mar in area bound by 24-15S 042-30W, 23-45S 042-30W, 23-45S 041-45W,…Western South Atlantic · Brazil-southeast Coast
- HYDROLANT 590/222022-02-28 → 2022-03-04Hazardous operations 041000Z to 041900Z mar in area bound by 07-53.5S 034-16.3W, 08-53.3S 034-36.0W,…Western South Atlantic · Brazil-northeast Coast
- HYDROLANT 484/222022-02-19 → 2022-02-19Hazardous operations 191300Z to 191800Z feb in area bound by 20-16.83S 040-16.68W, 20-20.32S 040-15.50W,…Western South Atlantic · Brazil-southeast Coast
- HYDROLANT 483/222022-02-19 → 2022-02-24Hazardous operations 241100Z to 242000Z feb in area within ten miles of 06-03.42S 034-48.00WWestern South Atlantic · Brazil-northeast Coast
- HYDROLANT 473/222022-02-18 → 2022-03-06Hazardous operations 230001Z feb to 052359Z mar in area bound by 23-45S 042-30W, 23-45S 041-45W, 24-15S…Western South Atlantic · Brazil-southeast Coast
- HYDROLANT 464/222022-02-17 → 2022-02-25Hazardous operations 1000Z to 2100Z daily 21 thru 25 feb in area bound by 05-54.13S 035-10.00W, 05-47.04S…Western South Atlantic · Brazil-northeast Coast
- HYDROLANT 428/222022-02-11 → 2022-02-15Hazardous operations 151500Z to 152000Z feb in area within ten miles of 06-03.42S 034-48.00WWestern South Atlantic · Brazil-northeast Coast
- HYDROLANT 265/222022-01-28 → 2022-02-01Hazardous operations 011000Z to 011900Z feb in area within 15 miles of 04-20S 036-42WWestern South Atlantic · Brazil-northeast Coast
- HYDROLANT 264/222022-01-28 → 2022-02-03Hazardous operations 021100Z to 032000Z feb in area bound by 24-14.5S 045-46.0W, 24-02.0S 045-33.5W,…Western South Atlantic · Brazil-south Coast
- HYDROLANT 248/222022-01-27 → 2022-02-26Hazardous operations 010001Z to 252359Z feb in area bound by 24-02.8S 043-55.8W, 24-02.8S 043-23.1W,…Western South Atlantic · Brazil-south Coast
- HYDROLANT 189/222022-01-21 → 2022-01-31Hazardous operations 260300Z to 302300Z jan in areas bound by: a. 23-20.0S 042-51.5W, 23-20.0S 042-30.0W,…Western South Atlantic · Brazil-southeast Coast
- HYDROLANT 187/222022-01-21 → 2022-01-30Hazardous operations 210900Z to 300001Z jan in area bound by 12-45S 037-05W, 12-55S 036-45W, 13-30S 037-06W,…Western South Atlantic · Brazil-east Coast
- HYDROLANT 159/222022-01-17 → 2022-01-22Hazardous operations 200300Z to 220300Z jan in area bound by 23-50S 042-11W, 23-31S 042-11W, 23-31S 041-48W,…Western South Atlantic · Brazil-southeast Coast
- HYDROLANT 115/222022-01-13 → 2022-01-19Hazardous operations 182100Z to 190300Z jan in area within ten miles of 29-44.3S 047-55.5WWestern South Atlantic · Brazil-south Coast
- HYDROLANT 101/222022-01-11 → 2022-02-26Hazardous operations 160001Z jan to 252359Z feb in area bound by 24-22.18S 043-50.80W, 24-38.50S 043-38.00W,…Western South Atlantic · Brazil-south Coast
- HYDROLANT 100/222022-01-10 → 2022-01-13Hazardous operations 0900Z to 2130Z daily 12 and 13 jan in area bound by 22-58.72S 042-02.15W, 23-01.00S…Western South Atlantic · Brazil-southeast Coast
- HYDROLANT 54/222022-01-06 → 2022-01-12Hazardous operations 0900Z to 2130Z daily 11 and 12 jan in area bound by 22-58.72S 042-02.15W, 23-01.00S…Western South Atlantic · Brazil-southeast Coast
- HYDROLANT 40/222022-01-05 → 2022-01-14Hazardous operations 101600Z to 141100Z jan in area bound by 23-50S 042-11W, 23-31S 042-11W, 23-31S 041-48W,…Western South Atlantic · Brazil-southeast Coast
- HYDROLANT 39/222022-01-05 → 2022-01-10Hazardous operations 100300Z to 101500Z jan 22 in area within 15 miles of 29-44.3S 047-55.5WWestern South Atlantic · Brazil-south Coast
- HYDROLANT 3071/212021-12-16 → 2021-12-24Hazardous operations 200900Z to 240900Z dec in area bound by 23-50S 042-11W, 23-31S 042-11W, 23-31S 041-48W,…Western South Atlantic · Brazil-southeast Coast
- HYDROLANT 3029/212021-12-11 → 2021-12-19Hazardous operations 160300Z to 192300Z dec in areas bound by: a. 23-40.0S 042-51.5W, 23-20.0S 042-51.5W,…Western South Atlantic · Brazil-south Coast
- HYDROLANT 3028/212021-12-11 → 2021-12-16Hazardous operations 160800Z to 161200Z decWestern South Atlantic · Brazil-northeast Coast
- HYDROLANT 3019/212021-12-10 → 2021-12-16Hazardous operations 1100Z to 2000Z daily 15 and 16 dec in area bound by 23-02.02S 043-51.02W, 23-02.02S…Western South Atlantic · Brazil-south Coast
- HYDROLANT 3009/212021-12-09 → 2021-12-14Hazardous operations 141600Z to 142000Z dec in area within ten miles of 03-46.9S 037-40.5WWestern South Atlantic · Brazil-north Coast
- HYDROLANT 2987/212021-12-06 → 2021-12-12Hazardous operations in progress until 11 dec in area bound by 02-18.93S 044-22.02W, 02-13.79S 044-22.07W,…Western South Atlantic · Brazil-north Coast
- HYDROLANT 2982/212021-12-05 → 2021-12-11Hazardous operations 1000Z to 1900Z daily 10 and 11 dec in area bound by 13-24S 038-36W, 13-14S 038-36W,…Western South Atlantic · Brazil-east Coast
- HYDROLANT 2971/212021-12-03 → 2021-12-07Hazardous operations 071600Z to 072100Z dec in area bound by 23-09.68S 043-54.79W, 23-09.68S 043-43.49W,…Western South Atlantic · Brazil-south Coast
- HYDROLANT 2967/212021-12-02 → 2021-12-13Hazardous operations 070100Z to 130300Z dec in area bound by 20-37S 040-53W, 20-54S 041-07W, 21-10S 040-36W,…Western South Atlantic · Brazil-southeast Coast
- HYDROLANT 2921/212021-11-27 → 2021-12-03Hazardous operations 1000Z to 1900Z daily 02 and 03 dec in area bound by 13-24S 038-36W, 13-14S 038-36W,…Western South Atlantic · Brazil-east Coast
- HYDROLANT 2894/212021-11-25 → 2021-11-30Hazardous operations 301000Z to 302100Z nov in area within ten miles of 05-57.6S 034-43.0WWestern South Atlantic · Brazil-northeast Coast
- HYDROLANT 2893/212021-11-25 → 2021-11-30Hazardous operations 301000Z to 302100Z nov in area bound by 32-14.6S 052-10.9W, 32-16.5S 052-02.8W,…Western South Atlantic · Brazil-south Coast
- HYDROLANT 2882/212021-11-24 → 2021-11-26Hazardous operations 240001Z to 260001Z nov in areas bound by: a. 24-06.00S 045-27.00W, 24-01.00S…Western South Atlantic · Brazil-south Coast
- HYDROLANT 2861/212021-11-21 → 2021-11-23Hazardous operations 210800Z to 222300Z nov in area within ten miles of 05-05.10S 034-47.48WWestern South Atlantic · Brazil-northeast Coast
- HYDROLANT 2852/212021-11-20 → 2021-11-26Hazardous operations 240001Z to 260001Z nov in areas bound by: a. 23-45.0S 044-44.0W, 23-37.0S 044-18.0W,…Western South Atlantic · Brazil-south Coast
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.