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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F
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Other hazards in the South Atlantic Ocean
Archive · 1,947 cancelled
- HYDROLANT 1626/262026-08-20 → 2026-08-20Hazardous operations are underway from August 25 0900Z to August 27 2100Z within seven miles of 24 degrees 26.04 minutes South, 045 degrees 39.91 minutes West.South Atlantic · Brazil
- HYDROLANT 2096/242024-10-02 → 2026-08-17Hazardous operations 052300Z to 082359Z oct in area bound by 24-47.00S 044-16.00W, 24-47.00S 043-20.00W,…Western South Atlantic · Brazil
- HYDROLANT 832/242024-04-19 → 2024-04-26Hazardous operations 220000Z to 252359Z apr in area bound by 23-23.00S 042-15.00W, 23-23.00S 042-45.00W,…Western South Atlantic · Brazil
- HYDROLANT 578/242024-03-20 → 2024-03-23Hazardous operations 0900Z to 1600Z daily 20 thru 23 mar in area bound by 00-24.10S 047-39.18W, 00-27.98S…Western South Atlantic · Brazil
- HYDROLANT 572/242024-03-19 → 2024-03-24Hazardous operations 241400Z to 242100Z mar in area bound by 23-40.00S 041-50.00W, 23-40.00S 042-21.00W,…Western South Atlantic · Brazil
- HYDROLANT 555/242024-03-16 → 2024-03-22Hazardous operations 212200Z to 220300Z mar in area bound by 17-07.00S 035-19.00W, 16-52.50S 035-41.00W,…Western South Atlantic
- HYDROLANT 523/242024-03-13 → 2024-03-18Hazardous operations 181300Z to 181900Z mar in area within three miles of 23-02.00S 043-03.00WWestern South Atlantic · Brazil
- HYDROLANT 505/242024-03-12 → 2024-03-14Hazardous operations 132200Z to 140400Z mar in area bound by 23-40.00S 041-50.00W, 23-40.00S 042-21.00W,…Western South Atlantic · Brazil
- HYDROLANT 498/242024-03-11 → 2024-03-20Hazardous operations 0900Z to 1600Z daily 18 thru 23 mar in area bound by 00-24.10S 047-39.18W, 00-27.98S…Western South Atlantic · Brazil
- HYDROLANT 376/242024-02-23 → 2024-02-28Hazardous operations 280900Z to 281500Z feb in area within 20 miles of 23-45.00S 041-45.00WWestern South Atlantic · Brazil
- HYDROLANT 371/242024-02-22 → 2024-02-27Hazardous operations 270900Z to 271500Z feb in area within 20 miles of 23-45.00S 041-45.00WWestern South Atlantic · Brazil
- HYDROLANT 369/242024-02-22 → 2024-02-26Hazardous operations 261300Z to 261900Z feb in area within ten miles of 05-40.00S 034-57.00WWestern South Atlantic · Brazil
- HYDROLANT 354/242024-02-19 → 2024-02-22Hazardous operations 221300Z to 221900Z feb in area within five miles of 05-42.00S 035-01.00WWestern South Atlantic · Brazil
- HYDROLANT 325/242024-02-16 → 2024-02-22Hazardous operations 1100Z to 1700Z daily 21 and 22 feb in area bound by 24-15.00S 044-00.00W, 23-50.00S…Western South Atlantic · Brazil
- HYDROLANT 309/242024-02-14 → 2024-02-23Hazardous operations 190800Z to 232200Z feb in area bound by 24-20.00S 040-32.00W, 24-30.00S 040-03.00W,…Western South Atlantic
- HYDROLANT 270/242024-02-08 → 2024-02-10Hazardous operations 090001Z to 092359Z feb in area bound by 23-34.00S 041-58.50W, 23-22.60S 041-52.60W,…Western South Atlantic · Brazil
- HYDROLANT 232/242024-02-01 → 2024-02-06Hazardous operations 060001Z to 070001Z feb in area bound by 23-34.00S 041-58.50W, 23-22.60S 041-52.60W,…Western South Atlantic · Brazil
- HYDROLANT 161/242024-01-20 → 2024-01-26Hazardous operations 250001Z to 260001Z jan in area bound by 11-48.00S 035-37.00W, 10-45.60S 035-25.90W,…Western South Atlantic · Brazil
- HYDROLANT 149/242024-01-19 → 2024-01-27Hazardous operations 240300Z to 270300Z jan in area bound by 10-14.33S 035-50.58W, 10-32.00S 035-25.50W,…Western South Atlantic · Brazil
- HYDROLANT 138/242024-01-18 → 2024-01-26Hazardous operations 230300Z to 260300Z jan in area bound by 08-51.88S 034-17.63W, 08-51.87S 034-38.00W,…Western South Atlantic · Brazil
- HYDROLANT 102/242024-01-14 → 2024-01-21Hazardous operations 190300Z to 202300Z jan in area within ten miles of 24-45.00S 042-00.00WWestern South Atlantic
- HYDROLANT 63/242024-01-09 → 2024-01-17Hazardous operations 140300Z to 170300Z jan in area bound by 09-59.12S 034-20.27W, 09-55.87S 035-12.35W,…Western South Atlantic · Brazil
- HYDROLANT 21/242024-01-04 → 2024-01-12Hazardous operations 0800Z to 2200Z daily 08 thru 12 jan in area bound by 24-30.00S 040-03.00W, 24-20.00S…Western South Atlantic
- HYDROLANT 2925/232023-12-21 → 2023-12-30Hazardous operations 0800Z to 1800Z daily 26 thru 30 dec in area within ten miles of 23-34.28S 043-08.23WWestern South Atlantic · Brazil
- HYDROLANT 2898/232023-12-17 → 2023-12-22Hazardous operations 220300Z to 221800Z dec in area within ten miles of 23-34.30S 043-09.20WWestern South Atlantic · Brazil
- HYDROLANT 2874/232023-12-13 → 2023-12-19Hazardous operations 1100Z to 1700Z daily 18 and 19 dec in area bound by 24-15.00S 044-00.00W, 23-50.00S…Western South Atlantic · Brazil
- HYDROLANT 2873/232023-12-13 → 2023-12-19Hazardous operations 181300Z to 191800Z dec in area bound by 13-20.58S 038-16.30W, 13-20.58S 038-26.33W,…Western South Atlantic · Brazil
- HYDROLANT 2817/232023-12-06 → 2023-12-19Hazardous operations in progress until 182300Z dec in area bound by 24-51.58S 043-44.93W, 24-16.70S…Western South Atlantic · Brazil
- HYDROLANT 2789/232023-12-02 → 2023-12-08Hazardous operations 1300Z to 1800Z daily 07 thru 08 dec in area bound by 13-20.53S 038-26.33W, 13-20.58S…Western South Atlantic · Brazil
- HYDROLANT 2779/232023-12-01 → 2023-12-08Hazardous operations daily 1100Z to 2000Z 06 thru 08 dec in area bound by 05-51.89S 034-54.35W, 05-47.04S…Western South Atlantic · Brazil
- HYDROLANT 2775/232023-12-01 → 2023-12-05Hazardous operations 051100Z to 051500Z dec in area within ten miles of 05-39.00S 034-52.00WWestern South Atlantic · Brazil
- HYDROLANT 2773/232023-12-01 → 2023-12-06Hazardous operations 061300Z to 061800Z dec in area within ten miles of 13-20.00S 038-15.00WWestern South Atlantic · Brazil
- HYDROLANT 2762/232023-11-30 → 2023-12-08Hazardous operations 041200Z to 082000Z dec in area within 12 miles of 24-22.68S 045-50.95WWestern South Atlantic · Brazil
- HYDROLANT 2761/232023-11-30 → 2023-12-13Hazardous operations 040800Z to 131800Z dec in area within ten miles of 23-34.28S 043-08.23WWestern South Atlantic · Brazil
- HYDROLANT 2688/232023-11-22 → 2023-11-30Hazardous operations 270900Z to 301900Z nov in area within ten miles of 13-20.00S 038-15.00WWestern South Atlantic · Brazil
- HYDROLANT 2673/232023-11-21 → 2024-02-25Hazardous operations 25 nov thru 24 feb 24 in area bound by 23-11.38S 042-30.07W, 23-30.03S 042-30.03W,…Western South Atlantic · Brazil
- HYDROLANT 2658/232023-11-19 → 2023-12-09Hazardous operations 24 nov thru 08 dec in area bound by 20-50.78S 040-43.00W, 20-58.90S 040-29.12W,…Western South Atlantic · Brazil
- HYDROLANT 2653/232023-11-18 → 2023-11-23Hazardous operations 231000Z to 231700Z nov in area bound by 23-35.00S 042-45.10W, 23-10.00S 042-45.10W,…Western South Atlantic · Brazil
- HYDROLANT 2652/232023-11-18 → 2023-11-23Hazardous operations 230700Z to 232100Z nov in area bound by 01-04.30S 048-37.10W, 01-06.00S 048-39.50W,…Western South Atlantic · Brazil
- HYDROLANT 2623/232023-11-16 → 2023-11-22Hazardous operations 210300Z to 222300Z nov in area within five miles of 23-25.50S 043-02.30WWestern South Atlantic · Brazil
- HYDROLANT 2563/232023-11-09 → 2023-12-01Hazardous operations 1100Z to 2000Z daily 13 nov thru 01 dec in areas within five miles of: a. 24-00.00S…Western South Atlantic · Brazil
- HYDROLANT 2488/232023-11-01 → 2023-11-05Hazardous operations 051400Z to 052000Z nov in area within ten miles of 01-52.00S 031-58.00WWestern South Atlantic
- HYDROLANT 2486/232023-11-01 → 2023-11-01Hazardous operations 051400Z to 052000Z nov in area within ten miles of 01-52.00S 031-58.00WWestern South Atlantic
- HYDROLANT 2442/232023-10-26 → 2023-11-01Hazardous operations 1100Z to 1700Z daily 31 oct and 01 nov in area bound by 24-15.00S 044-00.00W, 23-50.00S…Western South Atlantic · Brazil
- HYDROLANT 2381/232023-10-20 → 2023-10-25Hazardous operations 251100Z to 251700Z oct in area bound by 24-15.00S 044-00.00W, 23-50.00S 044-00.00W,…Western South Atlantic · Brazil
- HYDROLANT 2331/232023-10-14 → 2023-10-19Hazardous operations 191530Z to 191930Z oct in area bound by 23-23.00S 043-25.00W, 23-23.00S 043-11.70W,…Western South Atlantic · Brazil
- HYDROLANT 2310/232023-10-11 → 2023-10-13Hazardous operations in progress until 130001Z oct in area bound by 23-55.00S 042-55.00W, 23-55.00S…Western South Atlantic · Brazil
- HYDROLANT 2304/232023-10-11 → 2023-10-16Hazardous operations 161800Z to 162100Z oct in area bound by 23-40.00S 043-25.00W, 23-23.00S 043-25.00W,…Western South Atlantic · Brazil
- HYDROLANT 2302/232023-10-10 → 2023-10-17Hazardous operations 150001Z to 170001Z oct in area bound by 23-35.60S 042-08.00W, 23-43.70S 042-13.70W,…Western South Atlantic · Brazil
- HYDROLANT 2292/232023-10-10 → 2023-10-10Hazardous operations 150001Z to 152359Z oct in area bound by 23-35.60S 042-08.00W, 23-43.70S 042-13.70W,…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.