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 2654/012001-10-12 → 2001-10-17
    Hazardous operations 171600Z to 172100Z oct in area bound by 05-54.0S 035-11.0W, 05-56.0S 035-11.0W,…
  2. HYDROLANT 2610/012001-10-06 → 2001-10-11
    Hazardous operations 111600Z to 112100Z oct in area bound by 05-54.0S 035-11.0W, 05-56.0S 035-11.0W,…
  3. HYDROLANT 2560/012001-09-29 → 2001-10-03
    Hazardous operations 031600Z to 032100Z oct in area bound by 05-54.0S 035-11.0W, 05-56.0S 035-11.0W,…
  4. HYDROLANT 2410/012001-09-05 → 2001-09-07
    Hazardous operations in progress until 112000Z sep within 3.5 miles of 05-55S 035-04W
  5. HYDROLANT 1791/012001-06-21 → 2001-07-07
    Hazardous operations 251200Z jun to 072100Z jul within: a. 2.7 miles of 06-02S 034-57W
  6. HYDROLANT 1782/012001-06-20 → 2001-06-21
    Hazardous operations 211300Z to 212000Z jun in area bound by 05-54S 035-11W, 05-56S 035-11W, 06-04S 034-57W,…
  7. HYDROLANT 1534/012001-05-26 → 2001-05-31
    Hazardous operations 311600Z to 312030Z may in area bound by 05-54.0S 035-11.0W, 05-56.0S 035-11.0W,…
  8. HYDROLANT 1427/012001-05-17 → 2001-05-22
    Hazardous operations 221600Z to 222100Z may in area bound by 05-54.0S 035-11.0W, 05-56.0S 035-11.0W,…
  9. HYDROLANT 1397/012001-05-14 → 2001-05-16
    Hazardous operations 141940Z to 150300Z may, alternate 151940Z to 160300Z may in area bound by 06-42S…
  10. HYDROLANT 1387/012001-05-13 → 2001-05-14
    Hazardous operations 141940Z to 150100Z may, alternate 151940Z to 160100Z may in area bound by 06-42S…
  11. HYDROLANT 1310/012001-05-04 → 2001-05-18
    Hazardous operations 1200Z to 2000Z daily 09 thru 18 may within 3.5 miles of 05-55S 035-04W
  12. HYDROLANT 1130/012001-04-12 → 2001-04-21
    Hazardous operations 1200Z to 2000Z daily 17 thru 21 apr within eight miles of 06-17S 034-27W
  13. HYDROLANT 916/012001-03-21 → 2001-03-24
    Hazardous operations 1200Z to 2000Z daily 26 thru 31 mar within eight miles of 06-17S 034-27W
  14. HYDROLANT 4010/002000-12-02 → 2000-12-12
    Hazardous operations 1100Z to 1600Z daily 05 thru 12 dec within 6.5 miles of 05-50S 034-56W
  15. HYDROLANT 4009/002000-12-02 → 2000-12-12
    Hazardous operations 1100Z to 1600Z daily 05 thru 12 dec in area bound by 04-26S 033-14W, 03-06S 030-38W,…
  16. HYDROLANT 3990/002000-12-01 → 2000-12-02
    Hazardous operations 1100Z to 1600Z daily 05 thru 12 dec within 5.4 miles of: a. 05-49S 035-01W
  17. HYDROLANT 3989/002000-12-01 → 2000-12-02
    Hazardous operations 1100Z to 1600Z daily 05 thru 12 dec within: a. 35 miles of 04-10S 033-02W, b. 40.5…
  18. HYDROLANT 3913/002000-11-23 → 2000-12-04
    Hazardous operations 1200Z to 2000Z daily 28 nov thru 04 dec within 3.5 miles of 05-55S 035-04W
  19. HYDROLANT 3460/002000-10-11 → 2000-10-19
    Hazardous operations 1200Z to 2000Z daily 15 thru 28 oct within 3.5 miles of 05-55S 035-04W
  20. HYDROLANT 3253/002000-09-21 → 2000-09-26
    Hazardous operations 261600Z to 262030Z sep in area bound by 05-54.0S 035-11.0W, 05-56.0S 035-11.0W,…
  21. HYDROLANT 2859/002000-08-16 → 2000-08-22
    Hazardous operations 1300Z to 2000Z daily 17 thru 22 aug in area bound by 01-56S 043-09W, 00-18S 040-45W,…
  22. HYDROLANT 2832/002000-08-13 → 2000-08-16
    Hazardous operations 1300Z to 2000Z daily 17 thru 22 aug in area bound by 01-56S 043-09W, 00-45S 041-45W,…
  23. HYDROLANT 2095/002000-06-11 → 2000-06-15
    Hazardous operations 151700Z to 151930Z in area bound by 05-54.0S 035-11.0W, 05-56.0S 035-11.0W, 06-03.9S…
  24. HYDROLANT 1807/002000-05-19 → 2000-05-20
    Hazardous operations 1200Z to 2000Z daily 23 may thru 02 jun within 3.5 miles of 05-55S 035-04W
  25. HYDROLANT 1525/002000-04-29 → 2000-05-03
    Hazardous operations 031700Z to 031930Z may in area bound by 05-54.0S 035-11.0W, 05-56.0S 035-11.0W,…
  26. HYDROLANT 1516/002000-04-28 → 2000-05-02
    Hazardous operations 301940Z apr to 010055Z may, alternate 011940Z to 020055Z may in area bound by 04-16S…
  27. HYDROLANT 711/002000-02-25 → 2000-02-28
    Hazardous operations 262000Z to 270110Z feb, alternate 272000Z to 280110Z feb in area bound by 04-46S…
  28. HYDROPAC 234/002000-02-07 → 2000-02-12
    Hazardous operations 111715Z to 112220Z feb, alternate 121710Z to 122215Z feb within 30 miles of trackline…
  29. HYDROLANT 456/002000-02-06 → 2000-02-08
    Hazardous operations in progress until 121900Z feb in area bound by 02-13.0S 043-39.3W, 01-34.0S 043-19.0W,…
  30. HYDROPAC 196/002000-01-31 → 2000-02-01
    Hazardous operations 011729Z to 012234Z feb within 30 miles of trackline joining 55-22S 174-23E, 54-27S…
  31. HYDROLANT 354/002000-01-30 → 2000-02-06
    Hazardous operations 261100Z jan to 061700Z feb in area bound by 02-13.0S 043-39.3W, 01-34.0S 043-19.0W,…
  32. HYDROPAC 159/002000-01-26 → 2000-01-31
    Hazardous operations 311732Z to 312237Z jan within 30 miles of trackline joining 55-22S 174-23E, 54-27S…
  33. HYDROLANT 292/002000-01-26 → 2000-01-30
    Hazardous operations 261100Z to 301700Z jan in area bound by 02-13.0S 043-39.3W, 01-34.0S 043-19.0W,…
  34. HYDROLANT 244/002000-01-23 → 2000-01-25
    Hazardous operations 261100Z to 301400Z jan within 11 miles of 02-22S 043-02W
  35. HYDROLANT 235/002000-01-22 → 2000-01-25
    Hazardous operations 261400Z jan to 041800Z feb within 24 miles of 01-08S 043-21W
  36. HYDROLANT 223/002000-01-22 → 2000-02-01
    Gunnery exercises 261400Z jan to 011200Z feb in area bound by 35-30S 052-20W, 35-15S 052-40W, 35-30S…
  37. HYDROLANT 2665/991999-12-09 → 1999-12-13
    Gunnery exercises 130900Z to 132100Z dec in area bound by 36-12S 053-00W, 36-23S 052-48W, 36-33S 053-02W,…
  38. HYDROLANT 2650/991999-12-08 → 1999-12-13
    Hazardous operations 1700Z to 2359Z daily until 20 dec within: a. 60 miles of 02-53S 035-36W
  39. HYDROLANT 2608/991999-12-03 → 1999-12-13
    Hazardous operations 1500Z to 2200Z daily 07 thru 20 dec in areas: a. bound by 01-24.0S 042-23.0W, 02-24.0S…
  40. HYDROLANT 2554/991999-11-27 → 1999-12-10
    Hazardous operations 1100Z to 1900Z daily 30 nov thru 10 dec in area bound by 05-54.0S 035-11.0W, 05-56.0S…
  41. HYDROLANT 2543/991999-11-26 → 1999-11-27
    Hazardous operations 1600Z to 2030Z daily 30 nov thru 03 dec in area bound by 05-54-01S 035-11-01W,…
  42. HYDROLANT 2485/991999-11-20 → 1999-11-22
    Hazardous operations 241500Z to 241600Z nov in area bound by 23-02.00S 043-51.65W, 23-05.00S 043-51.65W,…
  43. HYDROLANT 2472/991999-11-18 → 1999-12-03
    Hazardous operations 1100Z to 1900Z daily 22 nov thru 10 dec within 20 miles of 05-55S 034-45W
  44. HYDROLANT 2407/991999-11-10 → 1999-11-19
    Hazardous operations 1200Z to 2000Z daily 11 thru 21 nov within 20 miles of 05-55S 034-45W
  45. HYDROLANT 2406/991999-11-10 → 1999-11-19
    Hazardous operations 1500Z to 2200Z daily 14 thru 25 nov within: a. 22 miles of 01-45S 041-58W
  46. HYDROLANT 2391/991999-11-09 → 1999-11-12
    Hazardous operations 101920Z to 110035Z nov, alternate 112350Z to 120505Z nov in areas: a. bound by 29-08N…
  47. NAVAREA IV 378/991999-11-09 → 1999-11-12
    Hazardous operations 101920Z to 110035Z nov, alternate 112350Z to 120505Z nov in areas: a. bound by 29-08N…

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 39 · seahazards