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 751/192019-03-09 → 2019-03-13Hazardous operations 100900Z to 130900Z mar in area bound by 25-21.00S 046-26.00W, 25-28.00S 046-38.88W,…Western South Atlantic · Brazil-south Coast
- HYDROLANT 739/192019-03-08 → 2019-03-29Hazardous operations 131100Z to 292100Z mar in area bound by 24-09S 041-10W, 24-42S 039-33W, 26-14S 040-12W,…Western South Atlantic · Brazil-southeast Coast
- HYDROLANT 725/192019-03-07 → 2019-03-12Hazardous operations 080900Z to 130900Z mar in areas bound by: a. 25-11.49S 046-49.13W, 25-01.17S…Western South Atlantic · Brazil-south Coast
- HYDROLANT 664/192019-02-28 → 2019-03-03Hazardous operations in progress until 030900Z mar in area bound by 25-21.00S 046-26.00W, 25-28.02S…Western South Atlantic · Brazil-south Coast
- HYDROLANT 655/192019-02-28 → 2019-02-28Hazardous operations 280900Z feb to 030900Z mar in area bound by 25-21.00S 046-26.00W, 25-28.02S 046-38.88W,…Western South Atlantic · Brazil-south Coast
- HYDROLANT 613/192019-02-26 → 2019-03-16Hazardous operations 0900Z to 2200Z daily 27 feb thru 21 mar in area bound by 29-20.53S 049-05.53W,…Western South Atlantic · Brazil-south Coast
- HYDROLANT 605/192019-02-25 → 2019-02-28Hazardous operations 250900Z thru 280900Z feb in area bound by 25-21.00S 046-26.00W, 25-28.02S 046-38.88W,…Western South Atlantic · Brazil-south Coast
- HYDROLANT 598/192019-02-24 → 2019-03-02Hazardous operations 250900Z feb thru 020900Z mar by M/V vigdis knutsen and M/V el segundo voyager in areas…Western South Atlantic · Brazil-south Coast
- HYDROLANT 585/192019-02-22 → 2019-02-27Hazardous operations 220900Z to 270900Z feb in areas bound by: a. 25-11.50S 046-49.15W, 25-01.17S…Western South Atlantic · Brazil-south Coast
- HYDROLANT 567/192019-02-20 → 2019-02-25Hazardous operations in progress until 250900Z feb by M/V lena knutsen and M/V dht redwood in areas bound…Western South Atlantic · Brazil-south Coast
- HYDROLANT 555/192019-02-20 → 2019-03-01Hazardous operations 1000Z to 2100Z daily 25 feb thru 01 mar in area bound by 05-53.68S 035-11.15W,…Western South Atlantic · Brazil-northeast Coast
- HYDROLANT 534/192019-02-19 → 2019-02-20Hazardous operations 190900Z to 240900Z feb in areas bound by: a. 25-11.48S 046-49.13W, 25-01.17S…Western South Atlantic · Brazil-south Coast
- HYDROLANT 486/192019-02-15 → 2019-02-21Hazardous operations 190900Z to 212130Z feb in area bound by 22-58.72S 042-02.15W, 23-01.00S 042-00.00W,…Western South Atlantic · Brazil-southeast Coast
- HYDROLANT 393/192019-02-06 → 2019-02-09Hazardous operations 060800Z to 090800Z feb in area bound by 25-21.00S 046-26.00W, 25-28.00S 046-38.88W,…Western South Atlantic · Brazil-south Coast
- HYDROLANT 377/192019-02-05 → 2019-02-06Hazardous operations 050800Z to 080800Z feb in area bound by 25-21.00S 046-26.00W, 25-28.00S 046-38.88W,…Western South Atlantic · Brazil-south Coast
- HYDROLANT 351/192019-02-03 → 2019-02-08Hazardous operations 081000Z to 081500Z feb within eight miles of 05-45S 034-45WWestern South Atlantic · Brazil-northeast Coast
- HYDROLANT 269/192019-01-27 → 2019-02-02Hazardous operations 280800Z jan to 020800Z feb in areas bound by: a. 25-11.50S 046-49.13W, 25-01.17S…Western South Atlantic · Brazil-south Coast
- HYDROLANT 230/192019-01-24 → 2019-01-30Hazardous operations 250800Z to 300800Z jan in areas bound by: a. 25-11.50S 046-49.13W, 25-01.17S…Western South Atlantic · Brazil-south Coast
- HYDROLANT 229/192019-01-24 → 2019-01-30Hazardous operations 2100Z to 2359Z daily until 29 jan in area bound by 26-37S 045-26W, 26-29S 045-08W,…Western South Atlantic
- HYDROLANT 216/192019-01-23 → 2019-01-29Hazardous operations 240800Z to 290800Z jan in areas bound by: a. 25-01.85S 046-14.61W, 25-01.17S…Western South Atlantic · Brazil-south Coast
- HYDROLANT 201/192019-01-22 → 2019-01-26Hazardous operations 230800Z to 260800Z jan in area bound by 25-21.00S 046-26.00W, 25-28.00S 046-38.88W,…Western South Atlantic · Brazil-south Coast
- HYDROLANT 200/192019-01-22 → 2019-01-28Hazardous operations 230800Z to 280800Z jan in areas bound by: a. 25-01.85S 046-14.61W, 25-01.17S…Western South Atlantic · Brazil-south Coast
- HYDROLANT 157/192019-01-18 → 2019-01-21Hazardous operations 180800Z to 210800Z jan in area bound by 25-21.00S 046-26.00W, 25-28.00S 046-38.88W,…Western South Atlantic · Brazil-south Coast
- HYDROLANT 71/192019-01-08 → 2019-01-13Hazardous operations 090800Z to 130800Z jan in areas bound by: a. 25-11.48S 046-49.13W, 25-01.17S…Western South Atlantic · Brazil-south Coast
- HYDROLANT 67/192019-01-07 → 2019-01-12Hazardous operations 120900Z to 121400Z jan in area within 15 miles of 25-06S 044-45WWestern South Atlantic · Brazil-south Coast
- HYDROLANT 25/192019-01-04 → 2019-01-08Hazardous operations 081400Z to 082000Z jan in area within ten miles of 24-00S 043-00WWestern South Atlantic · Brazil-south Coast
- HYDROLANT 4030/182018-12-27 → 2018-12-30Hazardous operations 270800Z to 300800Z dec in area bound by 25-21.00S 046-26.00W, 25-28.00S 046-38.88W,…Western South Atlantic · Brazil-south Coast
- HYDROLANT 4016/182018-12-25 → 2018-12-27Hazardous operations 250800Z to 280800Z dec in area bound by 25-21.00S 046-26.00W, 25-28.00S 046-38.88W,…Western South Atlantic · Brazil-south Coast
- HYDROLANT 4006/182018-12-24 → 2018-12-27Hazardous operations 240800Z to 270800Z dec in area bound by 25-21.00S 046-26.00W, 25-28.00S 046-38.88W,…Western South Atlantic · Brazil-south Coast
- HYDROLANT 3977/182018-12-21 → 2018-12-24Hazardous operations 210800Z to 240900Z dec in area bound by 25-21.00S 046-26.00W, 25-28.00S 046-38.87W,…Western South Atlantic · Brazil-south Coast
- HYDROLANT 3948/182018-12-19 → 2018-12-21Hazardous operations 190800Z to 220800Z dec in area bound by 25-21.00S 046-26.00W, 25-28.00S 046-38.87W,…Western South Atlantic · Brazil-south Coast
- HYDROLANT 3906/182018-12-15 → 2018-12-19Hazardous operations 0800Z to 2000Z daily 13 thru 19 dec in areas: a. bound by 05-42.53S 034-45.02W,…Western South Atlantic · Brazil-northeast Coast
- HYDROLANT 3855/182018-12-11 → 2018-12-14Hazardous operations 110800Z to 140800Z dec in areas bound by: a. 25-11.48S 046-49.13W, 25-01.17S…Western South Atlantic · Brazil-south Coast
- HYDROLANT 3844/182018-12-10 → 2018-12-15Hazardous operations in progress until 150800Z dec in areas bound by: a. 25-11.50S 046-49.13W, 25-01.17S…Western South Atlantic · Brazil-south Coast
- HYDROLANT 3732/182018-11-30 → 2018-12-02Hazardous operations 300800Z nov to 020800Z dec in areas bound by: a. 25-11.50S 046-49.13W, 25-01.17S…Western South Atlantic · Brazil-south Coast
- HYDROLANT 3731/182018-11-30 → 2018-12-07Hazardous operations 050900Z to 071800Z dec in area within eight miles of 23-50S 044-15WWestern South Atlantic · Brazil-south Coast
- HYDROLANT 3696/182018-11-28 → 2018-12-07Hazardous operations 1000Z to 2100Z daily 03 thru 07 dec in area bound by 05-54.13S 035-10.00W, 05-47.04S…Western South Atlantic · Brazil-northeast Coast
- HYDROLANT 3695/182018-11-28 → 2018-12-09Hazardous operations 0800Z to 2000Z daily 03 thru 09 dec in areas: a. bound by 05-42.53S 034-45.02W,…Western South Atlantic · Brazil-northeast Coast
- HYDROLANT 3681/182018-11-27 → 2018-12-07Hazardous operations 021200Z to 071800Z dec in area bound by 24-09S 041-10W, 24-42S 039-33W, 26-14S 040-12W,…Western South Atlantic · Brazil-southeast Coast
- HYDROLANT 3666/182018-11-25 → 2018-11-30Hazardous operations 260800Z to 300800Z nov in areas bound by: a. 25-11.50S 046-49.13W, 25-01.17S…Western South Atlantic · Brazil-south Coast
- HYDROLANT 3660/182018-11-24 → 2018-12-13Hazardous operationsWestern South Atlantic · Brazil-north Coast
- HYDROLANT 3609/182018-11-20 → 2018-12-01Hazardous operations 261100Z nov to 012100Z dec in area bound by 02-18.93S 044-22.02W, 02-09.00S 044-24.00W,…Western South Atlantic · Brazil-north Coast
- HYDROLANT 3594/182018-11-19 → 2018-11-30Hazardous operations 251200Z to 301800Z nov in area bound by 24-09S 041-10W, 24-42S 039-33W, 26-14S 040-12W,…Western South Atlantic · Brazil-southeast Coast
- HYDROLANT 3567/182018-11-17 → 2018-11-21Hazardous operations 170800Z to 210800Z nov in area bound by a. 25-11.50S 046-49.13W, 25-01.17S 046-20.87W,…Western South Atlantic · Brazil-south Coast
- HYDROLANT 3481/182018-11-09 → 2018-11-15Hazardous operations 140900Z to 152130Z nov in area bound by 22-58.72S 042-02.15W, 23-01.00S 042-00.00W,…Western South Atlantic · Brazil-southeast Coast
- HYDROLANT 3433/182018-11-05 → 2018-11-06Hazardous operations 061300Z to 061700Z nov in area bound by 00-38.5S 046-32.5W, 00-40.0S 046-27.0W,…Western South Atlantic · Brazil-north Coast
- HYDROLANT 3427/182018-11-04 → 2018-11-13Hazardous operations 090300Z to 132000Z nov in areas: a. bound by 21-09.7S 040-54.5W, 20-51.5S 040-46.5W,…Western South Atlantic · Brazil-southeast Coast
- HYDROLANT 3423/182018-11-03 → 2018-11-10Hazardous operations 1100Z to 2100Z daily 05 thru 10 nov in area bound by 02-18.93S 044-22.02W, 02-09.00S…Western South Atlantic · Brazil-north Coast
- HYDROLANT 3421/182018-11-03 → 2018-11-08Hazardous operations 081000Z to 081500Z nov in area within eight miles of 05-40S 034-50WWestern South Atlantic · Brazil-northeast Coast
- HYDROLANT 3261/182018-10-17 → 2018-10-18Hazardous operations 191400Z to 191800Z oct in area within six miles of 23-10S 043-03WWestern 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.