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 1246/092009-07-05 → 2009-07-14
    Gunnery exercises 1500Z to 2000Z daily 10 thru 16 jul within 15 miles of 13-16S 038-00W
  2. HYDROLANT 1202/092009-06-27 → 2009-07-01
    Hazardous operations 1030Z to 2027Z daily 01 jul thru 01 aug in area bound by 04-11S 001-04W, 05-57S…
  3. HYDROLANT 1119/092009-06-18 → 2009-06-26
    Hazardous operations 221700Z to 222100Z jun, 1100Z to 2100Z daily 23 thru 25 jun and 261100Z to 261700Z jun…
  4. HYDROLANT 1023/092009-06-03 → 2009-06-10
    Hazardous operations 081700Z to 082100Z jun and 1100Z to 2100Z daily 09 and 10 jun in area bound by…
  5. HYDROLANT 1022/092009-06-03 → 2009-06-05
    Gunnery exercises 081300Z to 090100Z jun within ten miles of 29-45S 049-30W
  6. HYDROLANT 951/092009-05-23 → 2009-05-27
    Hazardous operations 260500Z to 261214Z may, alternate 270500Z to 271214Z may in area bound by 09-01S…
  7. HYDROLANT 945/092009-05-23 → 2009-06-04
    Hazardous operations 27 may thru 03 jun in area bound by 01-58.5S 044-07.0W, 01-55.5S 044-09.0W, 01-49.2S…
  8. HYDROLANT 941/092009-05-23 → 2009-05-23
    Hazardous operations 250500Z to 251214Z may, alternate 0500Z to 1214Z daily 26 and 27 may in area bound by…
  9. HYDROLANT 934/092009-05-22 → 2009-05-29
    Hazardous operations 0930Z to 2130Z daily 27 thru 29 may in area bound by 22-58.72S 042-02.15W, 23-01.00S…
  10. HYDROLANT 915/092009-05-18 → 2009-05-19
    Hazardous operations 192010Z to 200324Z may, alternate 202010Z to 210324Z may in area bound by 09-01S…
  11. HYDROLANT 900/092009-05-15 → 2009-05-18
    Hazardous operations 182010Z to 190124Z may, alternate 192010Z to 200124Z may in area bound by 09-01S…
  12. HYDROLANT 894/092009-05-15 → 2009-05-20
    Hazardous operations 201500Z to 202000Z may within 15 miles of 05-19.6S 034-39.8W
  13. HYDROLANT 893/092009-05-15 → 2009-05-21
    Hazardous operations 200900Z to 210300Z may within ten miles of 29-30S 048-56W
  14. HYDROLANT 892/092009-05-15 → 2009-05-21
    Hazardous operations 200900Z to 210300Z may within ten miles of 28-45S 048-10W
  15. HYDROLANT 886/092009-05-14 → 2009-05-15
    Hazardous operations 182010Z to 190124Z may, alternate 192010Z to 200124Z may in area bound by 09-01S…
  16. HYDROLANT 846/092009-05-07 → 2009-05-16
    Hazardous operations 110300Z to 160300Z may in areas bound by: a. 12-53.27S 038-37.70W, 12-53.02S…
  17. HYDROLANT 844/092009-05-07 → 2009-05-12
    Gunnery exercises 121100Z to 121500Z may within three miles of 23-07.2S 043-07.6W
  18. HYDROLANT 773/092009-04-26 → 2009-05-01
    Hazardous operations 011100Z to 012100Z may within ten miles of 25-34S 042-49W
  19. HYDROLANT 724/092009-04-18 → 2009-04-22
    Hazardous operations 221800Z to 222100Z apr within ten miles of 23-30S 043-07W
  20. HYDROLANT 678/092009-04-10 → 2009-04-16
    Hazardous operations 151300Z to 152300Z apr within 25 miles of 26-45S 045-40W
  21. HYDROLANT 641/092009-04-02 → 2009-04-07
    Hazardous operations 071100Z to 071300Z apr within eight miles of 23-01S 043-03W
  22. HYDROLANT 634/092009-04-01 → 2009-04-07
    Hazardous operations 062100Z to 070001Z apr within ten miles of 23-57.7S 044-46.5W
  23. HYDROLANT 633/092009-04-01 → 2009-04-06
    Hazardous operations 061600Z to 061930Z apr in area bound by 24-05.2S 045-49.0W, 23-56.5S 045-10.5W,…
  24. HYDROLANT 595/092009-03-27 → 2009-03-31
    Hazardous operations 012300Z to 020200Z apr within ten miles of 23-47.1S 044-05.9W
  25. HYDROLANT 588/092009-03-25 → 2009-03-31
    Hazardous operations 311000Z to 311930Z mar within ten miles of 23-46.0S 042-51.5W
  26. HYDROLANT 537/092009-03-18 → 2009-03-26
    Hazardous operations 231700Z to 232100Z, 241100Z to 242100Z, 251100Z to 252359Z and 261100Z to 262100Z mar…
  27. HYDROLANT 518/092009-03-15 → 2009-03-17
    Gunnery exercises 1000Z to 2100Z daily 20 thru 29 mar in area bound by 27-47.00S 048-27.25W, 27-50.25S…
  28. HYDROLANT 516/092009-03-14 → 2009-03-19
    Hazardous operations 181100Z to 182100Z, 191100Z to 192359Z and 201100Z to 201500Z mar in area bound by…
  29. HYDROLANT 515/092009-03-14 → 2009-03-19
    Hazardous operations 171700Z to 172100Z, 181100Z to 182100Z, 191100Z to 192359Z and 201100Z to 201500Z mar…
  30. HYDROLANT 504/092009-03-13 → 2009-03-19
    Hazardous operations 1100Z to 2100Z daily 18 and 19 mar in area bound by 23-30.0S 043-50.0W, 23-36.0S…
  31. HYDROLANT 492/092009-03-11 → 2009-03-12
    Gunnery exercises 120900Z to 121300Z mar within ten miles of 23-46S 042-59W
  32. HYDROLANT 469/092009-03-09 → 2009-03-14
    Gunnery exercises 141300Z to 141600Z mar within three miles of 23-10S 043-47W
  33. HYDROLANT 460/092009-03-07 → 2009-03-13
    Hazardous operations 121100Z to 122100Z and 131100Z to 131500Z mar in area bound by 23-30.0S 043-50.0W,…
  34. HYDROLANT 440/092009-03-04 → 2009-03-06
    Hazardous operations 051700Z to 052100Z and 061100Z to 062100Z mar in area bound by 23-30.0S 043-50.0W,…
  35. HYDROLANT 438/092009-03-04 → 2009-03-04
    Hazardous operations 051700Z to 052100Z and 061100Z to 062100Z mar in area bound by 23-30.0S 043-50.0W,…
  36. HYDROLANT 433/092009-03-03 → 2009-03-11
    Hazardous operations 091700Z to 092100Z and 111100Z to 112100Z mar in area bound by 23-30.0S 043-50.0W,…
  37. HYDROLANT 412/092009-02-28 → 2009-03-03
    Hazardous operations 051700Z to 052100Z and 061100Z to 062100Z mar in area bound by 23-30.0S 043-50.0W,…
  38. HYDROLANT 329/092009-02-16 → 2009-02-28
    Gunnery exercises 1800Z to 2300Z daily 21, 23, 26 and 27 feb in area bound by 36-17.0S 051-57.0W, 35-42.0S…
  39. HYDROLANT 307/092009-02-13 → 2009-02-18
    Gunnery exercises 181300Z to 181600Z feb within five miles of 23-15S 043-20W
  40. HYDROLANT 296/092009-02-12 → 2009-02-18
    Hazardous operations 1100Z to 1700Z daily 17 and 18 feb in area bound by 23-27.03S 043-52.03W, 23-30.03S…
  41. HYDROLANT 295/092009-02-12 → 2009-02-17
    Gunnery exercises 171430Z to 171930Z feb in area bound by 00-04N 045-05W, 00-04S 044-53W, 00-15S 045-02W,…
  42. HYDROLANT 289/092009-02-11 → 2009-02-17
    Hazardous operations 162300Z to 170200Z feb in area bound by 23-40.0S 044-10.0W, 23-36.5S 043-59.5W,…
  43. HYDROLANT 266/092009-02-07 → 2009-02-13
    Hazardous operations 1000Z to 2000Z daily 12 and 13 feb in area bound by 23-27.03S 043-52.03W, 23-30.03S…
  44. HYDROLANT 265/092009-02-07 → 2009-02-13
    Hazardous operations 1000Z to 2000Z daily 12 and 13 feb in area bound by 24-12.85S 046-08.31W, 24-15.03S…
  45. HYDROLANT 257/092009-02-06 → 2009-02-12
    Gunnery exercises 1100Z to 1700Z daily 11 and 12 feb within five miles of 35-30S 055-00W
  46. HYDROLANT 199/092009-01-30 → 2009-02-06
    Hazardous operations 0830Z to 2030Z daily 03 thru 06 feb in area bound by 22-58.72S 042-02.15W, 23-01.00S…
  47. HYDROLANT 138/092009-01-22 → 2009-01-28
    Hazardous operations 272100Z to 280500Z jan in area bound by 14-34S 038-49W, 14-22S 037-48W, 15-22S 037-36W,…
  48. HYDROLANT 78/092009-01-14 → 2009-02-06
    Gunnery exercises sunrise to sunset daily 19 jan thru 05 feb: a. in area bound by 05-42.53S 034-45.02W,…
  49. HYDROLANT 48/092009-01-08 → 2009-01-13
    Hazardous operations 130700Z to 131500Z jan in area bound by 09-27S 034-32W, 09-24S 033-32W, 10-05S 033-30W,…
  50. HYDROLANT 33/092009-01-06 → 2009-01-11
    Hazardous operations 111000Z to 111500Z jan in area bound by 16-27S 037-47W, 16-42S 037-21W, 17-08S 037-36W,…

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 32 · seahazards