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 1352/212021-05-19 → 2021-05-28Hazardous operations 240800Z to 280001Z may in area bound by 24-06.0S 045-27.0W, 24-01.0S 045-35.0W,…Western South Atlantic · Brazil-south Coast
- HYDROLANT 1272/212021-05-09 → 2021-05-31Hazardous operations 130001Z to 302359Z may in area bound by 24-30.0S 043-38.0W, 24-21.5S 043-18.0W,…Western South Atlantic · Brazil-south Coast
- HYDROLANT 1237/212021-05-05 → 2021-05-10Hazardous operations 100900Z to 142000Z may in area bound by 23-09.00S 044-01.30W, 23-03.05S 044-01.30W,…Western South Atlantic · Brazil-south Coast
- HYDROLANT 1165/212021-04-27 → 2021-05-14Hazardous operations 302100Z apr to 312100Z may in area within 15 miles of 24-29S 043-07WWestern South Atlantic · Brazil-south Coast
- HYDROLANT 1164/212021-04-27 → 2021-05-31Hazardous operations 302100Z apr 21 to 312100Z may in area bound by 24-06.0S 045-27.0W, 24-01.0S 045-35.0W,…Western South Atlantic · Brazil-south Coast
- HYDROLANT 1163/212021-04-27 → 2021-05-14Hazardous operations 302100Z apr to 312100Z may in area bound by 23-45S 044-44W, 23-37S 044-18W, 23-50S…Western South Atlantic · Brazil-south Coast
- HYDROLANT 1152/212021-04-26 → 2021-04-29Hazardous operations 270300Z to 292100Z apr in areas bound by: a. 23-40.0S 042-51.5W, 23-20.0S 042-51.5W,…Western South Atlantic · Brazil-south Coast
- HYDROLANT 1121/212021-04-23 → 2021-04-28Hazardous operations 1200Z to 2100Z daily 26 thru 28 apr in area bound by 51-44.03S 058-02.33W, 51-44.07S…Western South Atlantic · Falkland Islands
- HYDROLANT 1038/212021-04-16 → 2021-04-22Hazardous operations 210300Z to 222100Z apr in areas bound by: a. 23-40.0S 042-51.5W, 23-20.0S 042-51.5W,…Western South Atlantic · Brazil-south Coast
- HYDROLANT 1037/212021-04-16 → 2021-04-23Hazardous operations 211200Z to 230001Z apr in area within six miles of 22-59.73S 043-54.80W 2. cancel this…Western South Atlantic · Brazil-south Coast
- HYDROLANT 1031/212021-04-15 → 2021-04-28Hazardous operations 190800Z to 280001Z in area bound by 23-50.1S 043-50.7W, 24-03.5S 043-44.1W, 24-17.6S…Western South Atlantic · Brazil-south Coast
- HYDROLANT 905/212021-04-04 → 2021-04-13Hazardous operations 1000Z to 2000Z daily 08 thru 13 apr in area within two miles of 23-05.53S 043-58.25WWestern South Atlantic · Brazil-south Coast
- HYDROLANT 766/212021-03-17 → 2021-04-30Hazardous operations 231100Z mar to 302100Z apr in area bound by 24-06.0S 045-27.0W, 24-01.0S 045-35.0W,…Western South Atlantic · Brazil-south Coast
- HYDROLANT 765/212021-03-17 → 2021-04-30Hazardous operations 231100Z mar to 302100Z apr in area within 15 miles of 24-29S 043-07WWestern South Atlantic · Brazil-south Coast
- HYDROLANT 764/212021-03-17 → 2021-04-30Hazardous operations 231100Z mar to 302100Z apr in area bound by 23-45S 044-44W, 23-37S 044-18W, 23-50S…Western South Atlantic · Brazil-south Coast
- HYDROLANT 697/212021-03-11 → 2021-04-17Hazardous operations 16 mar thru 16 apr in area bound by 24-22.0S 043-55.8W, 24-02.8S 043-55.8W, 24-02.8S…Western South Atlantic · Brazil-south Coast
- HYDROLANT 636/212021-03-05 → 2021-03-05Hazardous operations 1030Z to 2030Z daily 10 thru 19 mar in area bound by 05-53.68S 035-11.15W, 05-06.75S…Western South Atlantic · Brazil-northeast Coast
- HYDROLANT 611/212021-03-03 → 2021-03-03Hazardous operations 031030Z to 031800Z mar along trackline joining 23-44.33S 045-14.02W, 24-11.95S 046-47.02WWestern South Atlantic · Brazil-south Coast
- HYDROLANT 573/212021-02-27 → 2021-02-28Hazardous operations 1300Z to 1800Z daily 27 and 28 feb in area bound by 20-16.83S 040-16.68W, 20-20.32S…Western South Atlantic · Brazil-south East
- HYDROLANT 323/212021-02-04 → 2021-02-10Hazardous operations 091100Z to 122100Z feb in area bound by 24-06.0S 045-27.0W, 24-01.0S 045-35.0W,…Western South Atlantic · Brazil-south Coast
- HYDROLANT 322/212021-02-04 → 2021-02-10Hazardous operations 091100Z to 122100Z feb in area bound by 23-45S 044-44W, 23-37S 044-18W, 23-50S 044-15W,…Western South Atlantic · Brazil-south Coast
- HYDROLANT 320/212021-02-04 → 2021-02-10Hazardous operations 091100Z to 122100Z feb in area within 15 miles of 24-29S 043-07WWestern South Atlantic · Brazil-south Coast
- HYDROLANT 310/212021-02-03 → 2021-03-16Hazardous operations 080001Z feb to 160001Z mar in area bound by 24-28.8S 043-55.8W, 24-08.8S 043-55.8W,…Western South Atlantic · Brazil-south Coast
- HYDROLANT 254/212021-01-28 → 2021-02-03Hazardous operations 022000Z to 030400Z feb in area bound by 24-42S 044-42W, 24-42S 043-56W, 25-02S 043-56W,…Western South Atlantic · Brazil-south Coast
- HYDROLANT 197/212021-01-21 → 2021-01-27Hazardous operations 0800Z to 2200Z daily from 25 thru 27 jan in area bound by 29-18S 044-25W, 27-38S…Western South Atlantic
- HYDROLANT 107/212021-01-12 → 2021-01-17Hazardous operations 170800Z to 172200Z jan in area bound by 27-38S 044-25W, 27-38S 042-30W, 29-18S 042-30W,…Western South Atlantic
- HYDROLANT 93/212021-01-11 → 2021-01-17Hazardous operations 162200Z to 170400Z jan in area bound by 26-58S 043-41W, 26-43S 043-15W, 27-10S 042-56W,…Western South Atlantic
- HYDROLANT 92/212021-01-11 → 2021-01-16Hazardous operations 161000Z to 161600Z jan in area within 20 miles of 26-30S 042-10WWestern South Atlantic
- HYDROLANT 90/212021-01-10 → 2021-01-15Hazardous operations 151000Z to 151600Z jan in area bound by 24-25S 043-45W, 24-25S 043-35W, 24-37S 043-35W,…Western South Atlantic · Brazil-south Coast
- HYDROLANT 81/212021-01-10 → 2021-01-16Hazardous operations 0800Z to 2200Z daily 15 and 16 jan in area bound by 25-19S 041-59W, 24-20S 040-32W,…Western South Atlantic
- HYDROLANT 3823/202020-12-09 → 2020-12-11Hazardous operations in progress until 110259Z dec in area bound by 24-45S 044-00W, 24-15S 044-00W, 24-15S…Western South Atlantic · Brazil-south Coast
- HYDROLANT 3822/202020-12-09 → 2020-12-16Hazardous operations in progress until 160259Z dec in area bound by 23-09S 044-04W, 22-54S 044-04W, 22-54S…Western South Atlantic · Brazil-south Coast
- HYDROLANT 3806/202020-12-08 → 2020-12-18Hazardous operations 1100Z to 2100Z daily 13 thru 18 dec in area bound by 23-45S 044-44W, 24-08S 044-35W,…Western South Atlantic · Brazil-south Coast
- HYDROLANT 3801/202020-12-07 → 2020-12-18Hazardous operations 1100Z to 2100Z daily 12 thru 18 dec in area bound by 24-06.0S 045-27.0W, 24-01.0S…Western South Atlantic · Brazil-south Coast
- HYDROLANT 3784/202020-12-05 → 2020-12-11Hazardous operations 1000Z to 2100Z daily 09 thru 11 dec in area within ten miles of 05-36.50S 034-48.66W 2.…Western South Atlantic · Brazil-northeast Coast
- HYDROLANT 3776/202020-12-04 → 2020-12-18Hazardous operations 1500Z to 2030Z daily 09 thru 18 dec in area bound by 05-53.68S 035-11.15W, 05-06.75S…Western South Atlantic · Brazil-northeast Coast
- HYDROLANT 3692/202020-11-27 → 2020-12-03Hazardous operations 1100Z to 2100Z daily 02 and 03 dec in area bound by 24-06.0S 045-27.0W, 24-01.0S…Western South Atlantic · Brazil-south Coast
- HYDROLANT 3671/202020-11-25 → 2020-11-28Hazardous operations 261200Z to 281900Z nov in area bound by 24-06S 045-22W, 24-06S 045-04W, 24-15S 045-04W,…Western South Atlantic · Brazil-south Coast
- HYDROLANT 3670/202020-11-25 → 2020-11-27Hazardous operations 1100Z to 2100Z daily 01 thru 03 dec in area bound by 24-09S 043-26W, 24-15S 043-47W,…Western South Atlantic · Brazil-south Coast
- HYDROLANT 3669/202020-11-25 → 2020-12-19Hazardous operations 010001Z to 182359Z dec in area bound by 24-09S 043-26W, 24-15S 043-47W, 24-35S 043-42W,…Western South Atlantic · Brazil-south Coast
- HYDROLANT 3660/202020-11-25 → 2020-12-04Hazardous operations 301000Z nov to 042100Z dec in area within ten miles of 05-36.50S 034-48.66WWestern South Atlantic · Brazil-northeast Coast
- HYDROLANT 3646/202020-11-24 → 2020-11-26Hazardous operations 1000Z to 1100Z daily 25 and 26 nov in areas bound by: a. 00-00S 047-35W, 00-00S…Western South Atlantic · Brazil-north Coast
- HYDROLANT 3636/202020-11-23 → 2020-11-24Hazardous operations 251000Z to 261100Z nov in areas bound by: a. 00-00S 047-35W, 00-00S 047-30W, 00-05S…Western South Atlantic · Brazil-north Coast
- HYDROLANT 3592/202020-11-18 → 2020-11-25Hazardous operations 240300Z to 251900Z nov in area bound by: 23-40.0S 042-51.5W, 23-20.0S 042-51.5W,…Western South Atlantic · Brazil-south Coast
- HYDROLANT 3581/202020-11-18 → 2020-11-23Hazardous operations 230900Z to 232100Z nov in area bound by 16-00S 038-30W, 15-45S 038-30W, 15-45S 038-20W,…Western South Atlantic · Brazil-east Coast
- HYDROLANT 3557/202020-11-16 → 2020-11-20Hazardous operations 191000Z to 202100Z nov in area within ten miles of 05-36.50S 034-48.66WWestern South Atlantic · Brazil-northeast Coast
- HYDROLANT 3551/202020-11-16 → 2020-11-22Hazardous operations 212000Z thru 220300Z nov in area bound by 20-33.75S 038-35.40W, 21-11.98S 038-49.07W,…Western South Atlantic · Brazil-southeast Coast
- HYDROLANT 3509/202020-11-12 → 2020-11-13Hazardous operations 122000Z to 130300Z nov in area bound by 06-06.97S 034-22.62W, 06-41.93S 034-11.75W,…Western South Atlantic · Brazil-northeast Coast
- HYDROLANT 3491/202020-11-11 → 2020-12-04Hazardous operations 1000Z to 2100Z daily 16 nov thru 04 dec in area bound by 05-54.13S 035-10.00W,…Western South Atlantic · Brazil-northeast Coast
- HYDROLANT 3426/202020-11-06 → 2020-11-12Hazardous operations 110300Z to 121900Z nov in areas bound by: a. 23-20.0S 042-51.5W, 23-20.0S 042-30.0W,…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.