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

  1. HYDROLANT 1564/26in force2026-08-13
    Hazardous operations occur daily from August 18 to 20, 0800Z to 2100Z, within ten miles of 25°06'S 041°13'W.
    South Atlantic
  2. HYDROLANT 1462/26in force2026-07-29
    Hazardous operations are occurring off Brazil in a bounded area from August 3 through September 11.
    South Atlantic · Brazil
  3. HYDROLANT 1457/26in force2026-07-29
    Hazardous 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

  1. HYDROLANT 1457/26in force2026-07-29 · 25 d
    Hazardous operations are in progress in the South Atlantic until 060400Z June 27 near 24-39S 042-30W; two-mile berth requested.
    South Atlantic
  2. HYDROLANT 1462/26in force2026-07-29 · 24 d
    Hazardous operations are occurring off Brazil in a bounded area from August 3 through September 11.
    South Atlantic · Brazil
  3. HYDROLANT 1564/26in force2026-08-13 · 9 d
    Hazardous operations occur daily from August 18 to 20, 0800Z to 2100Z, within ten miles of 25°06'S 041°13'W.
    South Atlantic

By year

99
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
26

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

  1. HYDROLANT 1654/052005-09-10 → 2005-09-15
    Hazardous operations 151700Z to 151830Z sep in area bound by 50-48S 067-43W, 50-48S 067-28W, 51-16S 067-28W,…
  2. HYDROLANT 1653/052005-09-10 → 2005-09-16
    Hazardous operations 152130Z to 152330Z sep in area bound by 49-45S 066-50W, 49-48S 066-36W, 50-17S 066-56W,…
  3. HYDROLANT 1645/052005-09-09 → 2005-09-16
    Hazardous operations 1600Z to 1800Z daily 14 thru 16 sep within 15 miles of 05-47.20S 034-40.00W
  4. HYDROLANT 1644/052005-09-09 → 2005-09-15
    Hazardous operations 1100Z to 2000Z daily 14 and 15 sep in area bound by 32-12.50S 052-12.00W, 32-22.32S…
  5. HYDROLANT 1625/052005-09-07 → 2005-09-16
    Hazardous operations 1000Z to 2030Z daily 12 thru 16 sep in areas bound by: a. 29-27.05S 049-32.05W,…
  6. HYDROLANT 1607/052005-09-03 → 2005-09-07
    Hazardous operations 071930Z to 072100Z sep in area bound by 46-14S 065-18W, 46-14S 065-04W, 46-45S 065-08W,…
  7. HYDROLANT 1563/052005-08-27 → 2005-09-01
    Hazardous operations 011000Z to 011700Z sep in area bound by 24-02S 042-35W, 23-44S 042-46W, 23-35S 042-28W,…
  8. HYDROLANT 1564/052005-08-27 → 2005-09-01
    Hazardous operations 011000Z to 011700Z sep in area bound by 24-02S 042-35W, 23-44S 042-46W, 23-35S 042-28W,…
  9. HYDROLANT 1556/052005-08-26 → 2005-08-31
    Hazardous operations 310900Z to 311400Z aug within six miles of 13-00S 037-30W
  10. HYDROLANT 1549/052005-08-25 → 2005-08-31
    Hazardous operations as follows: a. 1500Z to 2100Z daily 30 and 31 aug in area bound by 23-50.0S 043-16.8W,…
  11. HYDROLANT 1527/052005-08-22 → 2005-08-24
    Hazardous operations 231100Z to 242100Z aug within five miles of 32-12.0S 052-03.5W
  12. HYDROLANT 1522/052005-08-21 → 2005-08-22
    Hazardous operations 231100Z to 242100Z aug within five miles of 32-12.0S 052-03.5W
  13. HYDROLANT 1511/052005-08-19 → 2005-08-25
    Hazardous operations 242100Z to 250130Z aug in area bound by 24-00S 042-41W, 23-49S 042-32W, 24-06S 042-04W,…
  14. HYDROLANT 1508/052005-08-18 → 2005-09-04
    Hazardous operations 1000Z to 2100Z daily 19 aug thru 04 sep in area bound by 02-08.0S 044-27.0W, 02-06.0S…
  15. HYDROLANT 1498/052005-08-17 → 2005-08-23
    Hazardous operations 221500Z to 232200Z aug in area bound by 24-06.0S 045-27.0W, 24-01.0S 045-35.0W,…
  16. HYDROLANT 1478/052005-08-15 → 2005-08-18
    Hazardous operations 1000Z to 2100Z daily 19 aug thru 04 sep in area bound by 02-08.0S 044-27.0W, 02-06.0S…
  17. HYDROLANT 1470/052005-08-13 → 2005-08-16
    Hazardous operations 181930Z to 182300Z aug within 15 miles of 01-25S 031-22W
  18. HYDROLANT 1457/052005-08-11 → 2005-08-19
    Hazardous operations 1000Z to 2000Z daily 15 thru 19 aug in area bound by 23-07.00S 043-59.05W, 23-03.05S…
  19. HYDROLANT 1455/052005-08-11 → 2005-08-17
    Hazardous operations 0930Z to 2130Z daily 16 and 17 aug in area bound by 22-58.72S 042-02.15W, 23-01.00S…
  20. HYDROLANT 1448/052005-08-09 → 2005-08-11
    Hazardous operations 151000Z to 192000Z aug in area bound by 23-07.00S 043-57.08W, 23-03.08S 043-58.08W,…
  21. HYDROLANT 1424/052005-08-06 → 2005-08-11
    Hazardous operations 111900Z to 112200Z aug within ten miles of 06-46.0S 034-29.3W
  22. HYDROLANT 1393/052005-08-01 → 2005-08-05
    Hazardous operations 050900Z to 052100Z aug in area bound by 23-50.0S 043-16.8W, 24-00.0S 043-05.5W,…
  23. HYDROLANT 1261/052005-07-07 → 2005-07-13
    Hazardous operations: a. 121500Z to 122000Z jul in area bound by 23-50.0S 043-16.8W, 24-00.0S 043-05.5W,…
  24. HYDROLANT 1249/052005-07-05 → 2005-07-12
    Hazardous operations 1100Z to 1930Z daily 10 thru 12 jul in area bound by 05-52.8S 035-06.5W, 05-50.0S…
  25. HYDROLANT 1239/052005-07-03 → 2005-07-08
    Hazardous operations 081800Z to 082100Z jul within ten miles of 04-12S 032-57W
  26. HYDROLANT 1228/052005-07-01 → 2005-07-06
    Hazardous operations 060900Z to 061500Z jul in area bound by 23-50.0S 043-16.8W, 24-00.0S 043-05.5W,…
  27. HYDROLANT 1227/052005-07-01 → 2005-07-05
    Hazardous operations 061700Z to 061900Z jul within ten miles of 05-21.2S 034-36.0W 2. cancel this msg…
  28. HYDROLANT 1202/052005-06-27 → 2005-07-03
    Hazardous operations 1500Z to 1700Z daily 02 and 03 jul in area bound by 23-02.1S 043-36.2W, 23-13.1S…
  29. HYDROLANT 1186/052005-06-24 → 2005-06-29
    Hazardous operations 291000Z to 291500Z jun in area bound by 16-03S 037-40W, 15-58S 037-20W, 16-17S 037-16W,…
  30. HYDROLANT 1164/052005-06-21 → 2005-07-12
    Hazardous operations 0900Z to 2000Z daily 22 jun thru 12 jul: a. in area bound by 05-42.53S 034-45.02W,…
  31. HYDROLANT 1086/052005-06-10 → 2005-06-17
    Hazardous operations 1100Z to 2000Z daily 15 thru 17 jun in area bound by 05-54.22S 035-09.25W, 05-55.87S…
  32. HYDROLANT 1047/052005-06-03 → 2005-06-07
    Hazardous operations 071200Z to 071600Z jun in area bound by 13-06.3S 038-39.9W, 13-13.3S 038-32.8W,…
  33. HYDROLANT 1034/052005-06-01 → 2005-06-10
    Hazardous operations 060900Z to 102100Z jun within 70 miles of trackline joining 25-39.5S 042-01.2W,…
  34. HYDROLANT 1033/052005-06-01 → 2005-07-02
    Hazardous operations 1000Z to 2000Z daily 06 jun thru 02 jul in areas bound by: a. 29-27.1S 049-32.1W,…
  35. HYDROLANT 1026/052005-05-31 → 2005-06-03
    Hazardous operations 031400Z to 032000Z jun in area bound by 23-50.0S 043-16.5W, 24-00.0S 043-05.5W,…
  36. HYDROLANT 1016/052005-05-30 → 2005-06-05
    Hazardous operations 1500Z to 1700Z daily 04 and 05 jun in area bound by 23-02S 043-36W, 23-03S 043-35W,…
  37. HYDROLANT 1008/052005-05-28 → 2005-06-07
    Hazardous operations 021000Z to 021600Z and 071500Z to 072100Z jun in area bound by 00-25S 045-40W, 00-35S…
  38. HYDROLANT 993/052005-05-26 → 2005-06-01
    Hazardous operations 0930Z to 2030Z daily 31 may and 01 jun in area bound by 22-58.72S 042-02.15W, 23-01.00S…
  39. HYDROLANT 549/052005-03-25 → 2005-03-31
    Hazardous operations 1100Z to 1700Z daily 30 and 31 mar within 15 miles of 29-37S 049-00W
  40. HYDROLANT 534/052005-03-24 → 2005-03-29
    Hazardous operations 291200Z to 291600Z mar in area bound by 13-06.3S 038-39.9W, 13-13.3S 038-32.8W,…
  41. HYDROLANT 528/052005-03-23 → 2005-04-08
    Hazardous operations 1230Z to 2030Z daily 28 mar thru 08 apr in area bound by 27-53S 048-18W, 28-04S…
  42. HYDROLANT 422/052005-03-02 → 2005-03-08
    Hazardous operations: a. 071600Z to 072100Z mar in area bound by 23-50.00S 043-16.80W, 24-00.00S 043-05.50W,…
  43. HYDROLANT 420/052005-03-02 → 2005-04-02
    Hazardous operations 1000Z to 2100Z daily 07 mar thru 02 apr in area bound by 27-47.00S 048-27.15W,…
  44. HYDROLANT 1831/042004-11-12 → 2004-11-12
    Gunnery exercises 140100Z to 140400Z nov in area bound by 37-03.5S 053-17.0W, 37-23.0S 053-11.5W, 37-34.0S…
  45. HYDROLANT 1718/042004-10-23 → 2004-10-27
    Hazardous operations in progress until 02 nov 1600Z to 2100Z daily: a. in area bound by 01-00S 043-50W,…
  46. HYDROLANT 1642/042004-10-09 → 2004-10-22
    Hazardous operations 1600Z to 2100Z daily 14 thru 22 oct: a. in area bound by 01-00S 43-50W, 01-35S 043-17W,…
  47. HYDROLANT 1632/042004-10-06 → 2004-10-13
    Hazardous operations 1230Z to 2000Z daily 10 thru 13 oct within two miles of 02-17S 044-21W
  48. HYDROLANT 1630/042004-10-05 → 2004-10-13
    Hazardous operations 1230Z to 2000Z 10 thru 13 oct within two miles of 01-17S 044-21W
  49. HYDROLANT 1581/042004-09-27 → 2004-10-31
    Hazardous operations: a. 1700Z to 1800Z daily 04, 11, 18 and 25 oct in area between 23-02S 23-04S and…
  50. HYDROLANT 1550/042004-09-22 → 2004-09-28
    Hazardous operations in progress until 282100Z sep within two miles of 02-17S 044-21W

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.

Military exercises in the South Atlantic Ocean — page 37 · seahazards