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)
J
F
M
A
M
J
J
A
S
O
N
D
Other hazards in the South Atlantic Ocean
Archive · 1,947 cancelled
- HYDROLANT 99/232023-01-12 → 2023-01-17Hazardous operations 171000Z to 171200Z jan in area within 20 miles of 23-44.98S 041-30.00WWestern South Atlantic · Brazil
- HYDROLANT 98/232023-01-12 → 2023-01-17Hazardous operations 171000Z to 171600Z jan in area bound by 23-55.00S 042-00.00W, 23-35.00S 042-00.00W,…Western South Atlantic · Brazil
- HYDROLANT 3209/222022-12-14 → 2022-12-16Hazardous operations 160900Z to 161500Z dec in area within eight miles of 06-00.00S 034-53.00WWestern South Atlantic · Brazil
- HYDROLANT 3190/222022-12-13 → 2022-12-13Hazardous operations 131500Z to 132000Z dec in area within six miles of 06-00.00S 034-55.00WWestern South Atlantic · Brazil
- HYDROLANT 3180/222022-12-11 → 2022-12-16Hazardous operations 161200Z to 162100Z dec in area bound by 26-44.00S 046-44.00W, 26-28.00S 046-44.00W,…Western South Atlantic
- HYDROLANT 3100/222022-12-02 → 2022-12-06Hazardous operations 061500Z to 062200Z dec in area within six miles of 23-19.00S 043-36.00WWestern South Atlantic · Brazil
- HYDROLANT 3090/222022-12-01 → 2022-12-07Hazardous operations 0900Z to 2000Z daily 06 and 07 dec in area bound by 13-30.53S 038-26.33W, 13-20.58S…Western South Atlantic · Brazil
- HYDROLANT 3088/222022-12-01 → 2022-12-09Hazardous operations 060001Z to 082359Z dec in area bound by 24-33.00S 040-03.00W, 24-20.00S 040-32.00W,…Western South Atlantic
- HYDROLANT 3045/222022-11-26 → 2022-11-28Hazardous operations 281400Z to 282000Z nov in area within six miles of 05-13.00S 034-57.00WWestern South Atlantic · Brazil
- HYDROLANT 3035/222022-11-25 → 2022-11-30Hazardous operations 301000Z to 302000Z nov in area bound by 13-30.53S 038-26.33W, 13-20.58S 038-26.33W,…Western South Atlantic · Brazil
- HYDROLANT 3020/222022-11-24 → 2022-11-29Hazardous operations 290800Z to 291600Z nov in area within 15 miles of 13-31.00S 038-19.00WWestern South Atlantic · Brazil
- HYDROLANT 2996/222022-11-22 → 2022-11-23Hazardous operations 231200Z to 232100Z nov in area within ten miles of 07-30.00S 034-22.00WWestern South Atlantic · Brazil
- HYDROLANT 2967/222022-11-19 → 2022-11-24Hazardous operations 240900Z to 241500Z nov in area within six miles of 23-24.80S 043-14.14WWestern South Atlantic · Brazil
- HYDROLANT 2947/222022-11-17 → 2022-11-22Hazardous operations 221100Z to 222000Z nov in area bound by 13-30.53S 038-26.33W, 13-20.58S 038-26.33W,…Western South Atlantic · Brazil
- HYDROLANT 2946/222022-11-17 → 2022-11-24Hazardous operations 1000Z to 2100Z daily 22 thru 24 nov in area bound by 24-30.00S 040-03.00W, 24-20.00S…Western South Atlantic
- HYDROLANT 2932/222022-11-16 → 2022-11-25Hazardous operations 212100Z to 252100Z nov in area bound by 23-45.00S 042-30.50W, 23-45.00S 041-59.00W,…Western South Atlantic · Brazil
- HYDROLANT 2931/222022-11-16 → 2022-11-25Hazardous operations 1000Z to 2100Z daily 21 thru 25 nov in area bound by 24-15.00S 043-16.70W, 23-50.00S…Western South Atlantic · Brazil
- HYDROLANT 2904/222022-11-13 → 2022-11-16Hazardous operations 161000Z to 162000Z nov in area within ten miles of 06-00.00S 034-30.00WWestern South Atlantic · Brazil
- HYDROLANT 2901/222022-11-13 → 2022-11-19Hazardous operations 1000Z to 2100Z daily 17 thru 19 nov in area bound by 24-30.00S 040-03.00W, 24-20.00S…Western South Atlantic
- HYDROLANT 2900/222022-11-12 → 2022-11-26Hazardous operations 17 thru 25 nov in area bound by 20-56.67S 040-32.52W, 20-49.42S 040-40.92W, 20-52.67S…Western South Atlantic · Brazil
- HYDROLANT 2899/222022-11-12 → 2022-11-12Hazardous operations 17 thru 25 nov in area bound by 20-33.78S 040-59.10W, 20-49.15S 041-07.62W, 21-01.50S…Western South Atlantic · Brazil
- HYDROLANT 2893/222022-11-12 → 2022-11-18Hazardous operations 1000Z to 2100Z daily 17 and 18 nov in area bound by 24-15.00S 043-16.70W, 23-50.00S…Western South Atlantic · Brazil
- HYDROLANT 2809/222022-11-04 → 2022-11-04Hazardous operations 040800Z to 041500Z nov in area bound by 10-24.00S 035-39.20W, 10-35.00S 035-21.00W,…Western South Atlantic · Brazil
- HYDROLANT 2806/222022-11-04 → 2022-11-04Hazardous operations 040800Z to 041500Z nov in area bound by 10-24.00S 035-39.20W, 10-35.00S 035-21.00W,…Western South Atlantic · Brazil
- HYDROLANT 2783/222022-11-02 → 2022-11-09Hazardous operations 070900Z to 092100Z nov in area within ten miles of 20-32.99S 039-25.00WWestern South Atlantic · Brazil
- HYDROLANT 2747/222022-10-29 → 2022-11-03Hazardous operations 031000Z to 032000Z nov in area bound by 09-21.90S 034-55.50W, 09-36.10S 034-29.60W,…Western South Atlantic · Brazil
- HYDROLANT 2746/222022-10-29 → 2022-11-12Hazardous operations 010001Z to 122200Z nov in area bound by 05-42.53S 034-45.02W, 05-51.31S 034-42.57W,…Western South Atlantic · Brazil
- HYDROLANT 2691/222022-10-23 → 2022-10-23Hazardous operations 231300Z to 231700Z oct in vicinity: a. 04-54.76S 035-49.73WWestern South Atlantic · Brazil
- HYDROLANT 2652/222022-10-19 → 2022-10-24Hazardous operations 241000Z to 241800Z oct in area bound by 13-14.00S 038-36.00W, 13-14.00S 038-26.00W,…Western South Atlantic · Brazil
- HYDROLANT 2632/222022-10-15 → 2022-10-21Hazardous operations 211000Z to 211500Z oct in area bound by 13-14.00S 038-36.00W, 13-14.00S 038-26.00W,…Western South Atlantic · Brazil
- HYDROLANT 2625/222022-10-15 → 2022-10-20Hazardous operations 201300Z to 201800Z oct in area bound by 13-14.00S 038-36.00W, 13-14.00S 038-26.00W,…Western South Atlantic · Brazil
- HYDROLANT 2606/222022-10-13 → 2022-10-21Hazardous operations 181500Z to 212100Z oct in area bound by 23-45.00S 042-30.83W, 23-45.00S 041-59.00W,…Western South Atlantic · Brazil
- HYDROLANT 2601/222022-10-13 → 2022-10-18Hazardous operations 181000Z to 181900Z oct in area within ten miles of 04-15.00S 036-48.00WWestern South Atlantic · Brazil
- HYDROLANT 2591/222022-10-12 → 2022-10-15Hazardous operations in progress until 150300Z oct in area bound by 23-45.00S 041-59.00W, 23-45.00S…Western South Atlantic · Brazil
- HYDROLANT 2569/222022-10-10 → 2022-10-15Hazardous operations 150900Z to 152130Z oct in area bound by 23-01.00S 042-00.00W, 22-58.72S 042-02.15W,…Western South Atlantic · Brazil
- HYDROLANT 2546/222022-10-07 → 2022-10-12Hazardous operations 120900Z to 121700Z oct in area bound by 23-01.00S 042-00.00W, 22-58.72S 042-02.15W,…Western South Atlantic · Brazil
- HYDROLANT 2536/222022-10-06 → 2022-10-12Hazardous operations 111500Z to 150300Z oct in area bound by 24-10.00S 041-43.00W, 24-10.00S 042-16.00W…Western South Atlantic · Brazil
- HYDROLANT 2535/222022-10-06 → 2022-10-11Hazardous operations 110900Z to 112130Z oct in area bound by 22-58.72S 042-02.15W, 23-01.00S 042-00.00W,…Western South Atlantic · Brazil
- HYDROLANT 2485/222022-09-30 → 2022-10-04Hazardous operations 041500Z to 041800Z oct in area bound by 00-45.00S 045-18.50W, 00-43.40S 045-27.00W,…Western South Atlantic · Brazil
- HYDROLANT 2483/222022-09-30 → 2022-10-05Hazardous operations 050300Z to 052300Z oct in area bound by 32-24.20S 052-04.30W, 32-22.40S 052-12.40W,…Western South Atlantic · Brazil
- HYDROLANT 2482/222022-09-30 → 2022-09-30Hazardous operations 300900Z sep to 050001Z oct in area bound by 12-55.00S 036-45.00W, 12-45.00S 037-05.00W,…Western South Atlantic · Brazil
- HYDROLANT 2472/222022-09-29 → 2022-10-07Hazardous operations 040300Z to 070300Z oct in area bound by 24-45.00S 044-00.00W, 24-25.00S 044-00.00W,…Western South Atlantic · Brazil
- HYDROLANT 2448/222022-09-27 → 2022-09-28Hazardous operations in progress until 272359Z sep in area within 20 miles of 11-54.99S 035-31.00WWestern South Atlantic · Brazil
- HYDROLANT 2433/222022-09-26 → 2022-10-01Hazardous operations 011100Z to 012000Z oct in area within five miles of 04-50.00S 033-53.00WWestern South Atlantic · Brazil
- HYDROLANT 2415/222022-09-24 → 2022-09-29Hazardous operations 241400Z to 292200Z sep along trackline joining 22-08.00S 034-52.20W, 03-50.50S 032-26.00WWestern South Atlantic · Brazil
- HYDROLANT 2402/222022-09-23 → 2022-09-28Hazardous operations 281200Z to 281900Z sep in area within 15 miles of 13-36.00S 038-27.00WWestern South Atlantic · Brazil
- HYDROLANT 2396/222022-09-22 → 2022-09-28Hazardous operations 270001Z to 272359Z sep in area within 20 miles of 13-04.99S 036-03.00WWestern South Atlantic
- HYDROLANT 2392/222022-09-21 → 2022-09-29Hazardous operations 1000Z to 2100Z daily 26 thru 29 sep in area bound by 24-30.00S 040-03.00W, 24-20.00S…Western South Atlantic
- HYDROLANT 2387/222022-09-20 → 2022-10-22Hazardous operations 211830Z sep to 212359Z oct, sunrise to sunset, in area bound by 23-27.03S 043-52.03W,…Western South Atlantic · Brazil
- HYDROLANT 2378/222022-09-20 → 2022-09-26Hazardous operations 250001Z to 252359Z sep in area within 20 miles of 19-34.98S 038-18.00WWestern 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.