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 · 25 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)
J
F
M
A
M
J
J
A
S
O
N
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Other hazards in the South Atlantic Ocean
Archive · 1,947 cancelled
- HYDROLANT 147/112011-01-24 → 2011-01-27Hazardous operationsBrazil-south Coast
- HYDROLANT 146/112011-01-24 → 2011-01-27Gunnery exercises 271000Z to 271400Z jan in area bound by 30-09.0S 049-38.5W, 29-41.5S 049-18.0W, 30-01.0S…Brazil-south Coast · Gunnery
- HYDROLANT 132/112011-01-21 → 2011-01-27Hazardous operationsBrazil-south Coast
- HYDROLANT 131/112011-01-21 → 2011-01-26Hazardous operationsBrazil-south Coast
- HYDROLANT 81/112011-01-13 → 2011-01-19Hazardous operationsBrazil-south Coast
- HYDROLANT 78/112011-01-13 → 2011-01-19Gunnery exercises 181500Z to 190030Z jan in area bound by 30-24S 049-46W, 29-35S 048-59W, 29-55S 048-19W,…Brazil-south Coast · Gunnery
- HYDROLANT 33/112011-01-07 → 2011-01-11Hazardous operationsBrazil-south Coast
- HYDROLANT 15/112011-01-04 → 2011-01-10Hazardous operationsBrazil-south Coast
- HYDROLANT 2430/102010-12-16 → 2010-12-17Hazardous operationsBrazil-south Coast
- HYDROLANT 2403/102010-12-12 → 2010-12-17Gunnery exercises 171200Z to 171600Z dec within 15 miles of 13-22S 037-50WBrazil-east Coast · Gunnery
- HYDROLANT 2402/102010-12-12 → 2010-12-16Hazardous operationsBrazil-south Coast
- HYDROLANT 2337/102010-12-04 → 2010-12-09Gunnery exercise 091600Z to 092000Z dec within five miles of 06-30S 034-40WBrazil-northeast Coast · Gunnery
- HYDROLANT 2299/102010-12-01 → 2010-12-07Hazardous operationsBrazil-east Coast
- HYDROLANT 2250/102010-11-25 → 2010-11-30Gunnery exercises 301600Z to 302000Z nov within four miles of 06-05S 035-00WBrazil-northeast Coast · Gunnery
- HYDROLANT 2198/102010-11-18 → 2010-11-25Hazardous operationsBrazil-south Coast
- HYDROLANT 2181/102010-11-17 → 2010-11-25Hazardous operationsBrazil-south Coast
- HYDROLANT 2180/102010-11-17 → 2010-11-26Gunnery exercises 1100Z to 2100Z daily 22 thru 26 nov in area bound by 24-00.00S 046-24.00W, 24-10.00S…Brazil-south Coast · Gunnery
- HYDROLANT 2179/102010-11-17 → 2010-11-25Gunnery exercises 0900Z to 2100Z daily 22 thru 25 nov in area bound by 05-54.30S 035-09.23W, 05-57.93S…Brazil-northeast Coast · Gunnery
- HYDROLANT 2146/102010-11-12 → 2010-11-17Hazardous operationsBrazil-southeast Coast
- HYDROLANT 2141/102010-11-11 → 2010-11-17Hazardous operationsBrazil-southeast Coast
- HYDROLANT 2109/102010-11-05 → 2010-11-11Gunnery exercises 102130Z to 110030Z nov in area bound by 33-08.1S 051-58.8W, 33-22.1S 051-46.9W, 33-37.9S…Brazil-south Coast · Gunnery
- HYDROLANT 2108/102010-11-05 → 2010-11-10Gunnery exercises 101500Z to 101900Z nov in area bound by 32-41.3S 052-07.8W, 32-34.3S 051-46.1W, 33-00.8S…Brazil-south Coast · Gunnery
- HYDROLANT 2103/102010-11-04 → 2010-11-12Gunnery exercises 091100Z to 091800Z and 121100Z to 121800Z nov within five miles of 05-40S 034-50WBrazil-northeast Coast · Gunnery
- HYDROLANT 2053/102010-10-29 → 2010-11-17Hazardous operationsBrazil-south Coast
- HYDROLANT 2011/102010-10-24 → 2010-10-29Gunnery exercises 291100Z to 291500Z oct within five miles of 05-30S 034-53WBrazil-northeast Coast · Gunnery
- HYDROLANT 1991/102010-10-21 → 2010-10-26Gunnery exercises 261100Z to 262100Z oct within ten miles of 12-37S 037-29WBrazil-east Coast · Gunnery
- HYDROLANT 1957/102010-10-15 → 2010-10-20Gunnery exercises 201300Z to 202000Z oct in area bound by 29-55S 048-43W, 30-31S 049-16W, 30-05S 049-46W,…Brazil-south Coast · Gunnery
- HYDROLANT 1944/102010-10-13 → 2010-10-22Gunnery exercises 1100Z to 1500Z and 1600Z to 2000Z daily 18 thru 22 oct in area bound by 22-57.58S…Brazil-south Coast · Gunnery
- HYDROLANT 1943/102010-10-13 → 2010-10-20Hazardous operationsBrazil-south Coast
- HYDROLANT 1880/102010-10-03 → 2010-10-07Gunnery exercises 071100Z to 072000Z oct in area bound by 11-11.6S 036-40.2W, 11-19.2S 036-33.7W, 11-12.7S…Brazil-east Coast · Gunnery
- HYDROLANT 1872/102010-10-02 → 2010-10-07Gunnery exercises 071000Z to 071900Z oct in area bound by 07-36.00S 034-49.35W, 07-42.35S 034-44.32W,…Brazil-northeast Coast · Gunnery
- HYDROLANT 1788/102010-09-22 → 2010-09-28Hazardous operationsBrazil-east Coast
- HYDROLANT 1786/102010-09-22 → 2010-09-27Gunnery exercises 271100Z to 271500Z sep in area bound by 30-06S 048-32W, 30-38S 049-07W, 30-10S 049-40W,…Brazil-south Coast · Gunnery
- HYDROLANT 1737/102010-09-15 → 2010-09-24Gunnery exercises 1600Z to 2030Z daily 20 thru 24 sep in area bound by 27-43.93S 047-53.93W, 27-45.93S…Brazil-south Coast · Gunnery
- HYDROLANT 1701/102010-09-10 → 2010-09-16Gunnery exercises 1100Z to 2000Z daily 15 and 16 sep in area bound by 32-12.50S 052-12.00W, 32-22.32S…Brazil-south Coast · Gunnery
- HYDROLANT 1688/102010-09-08 → 2010-09-14Hazardous operationsBrazil-south Coast
- HYDROLANT 1656/102010-09-02 → 2010-09-10Hazardous operationsBrazil-south Coast
- HYDROLANT 1628/102010-08-30 → 2010-09-04Gunnery exercises 041000Z to 041400Z sep in area bound by 30-06S 048-32W, 30-38S 049-07W, 30-10S 049-40W,…Brazil-south Coast · Gunnery
- HYDROLANT 1570/102010-08-19 → 2010-08-27Hazardous operationsBrazil-south Coast
- HYDROLANT 1490/102010-08-04 → 2010-08-28Gunnery exercises 09 thru 27 aug in area bound by 29-20.88S 049-05.88W, 29-27.05S 049-32.05W, 30-38.05S…Brazil-south Coast · Gunnery
- HYDROLANT 1410/102010-07-23 → 2010-07-28Hazardous operationsBrazil-southeast Coast
- HYDROLANT 1389/102010-07-21 → 2010-07-27Hazardous operationsBrazil-east Coast
- HYDROLANT 1365/102010-07-18 → 2010-07-28Hazardous operationsBrazil-southeast Coast
- HYDROLANT 1352/102010-07-16 → 2010-08-27Gunnery exercises 0800Z to 2000Z daily 21 jul thru 27 aug: a. in area bound by 05-42.53S 034-45.02W,…Brazil-northeast Coast · Gunnery
- HYDROLANT 1308/102010-07-10 → 2010-07-13Gunnery exercises 1700Z to 1800Z daily 12 and 13 jul in area bound by 23-02.03S 043-51.03W, 23-02.00S…Brazil-south Coast · Gunnery
- HYDROLANT 1287/102010-07-07 → 2010-07-12Gunnery exercises 121500Z to 121900Z jul within five miles of 06-30S 034-45WBrazil-northeast Coast · Gunnery
- HYDROLANT 1256/102010-07-04 → 2010-07-09Hazardous operationsBrazil-south Coast
- HYDROLANT 1240/102010-07-01 → 2010-07-08Hazardous operationsBrazil-southeast Coast
- HYDROLANT 1239/102010-07-01 → 2010-07-07Gunnery exercises 070900Z to 071900Z jul within ten miles of 13-23S 037-42WBrazil-east Coast · Gunnery
- HYDROLANT 1230/102010-07-01 → 2010-07-06Hazardous operationsBrazil-southeast 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.