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 1302/112011-08-18 → 2011-08-23
    Hazardous operations
    Brazil-south Coast
  2. HYDROLANT 1277/112011-08-13 → 2011-08-17
    Hazardous operations 1. hazardous operations 0900Z to 2130Z 18 and 19 aug in area bound by 22-58.72S…
    Brazil-southeast Coast
  3. HYDROLANT 1234/112011-08-04 → 2011-08-09
    Gunnery exercises 1300Z to 1800Z daily 08 and 09 aug within ten miles of 05-30S 034-50W
    Brazil-northeast Coast · Gunnery
  4. HYDROLANT 1190/112011-07-28 → 2011-08-02
    Gunnery exercises 021600Z to 021900Z aug within ten miles of 16-48S 038-06W
    Brazil-southeast Coast · Gunnery
  5. HYDROLANT 1173/112011-07-24 → 2011-07-29
    Gunnery exercises 291100Z to 291800Z jul within ten miles of 05-30S 034-50W
    Brazil-northeast Coast · Gunnery
  6. HYDROLANT 1143/112011-07-15 → 2011-07-28
    Hazardous operations
    Brazil-southeast Coast
  7. HYDROLANT 1121/112011-07-08 → 2011-07-15
    Hazardous operations 0930Z to 2030Z daily 08 thru 28 jul a. in areas bound by: 1. 22-58.11S 043-09.30W,…
  8. HYDROLANT 1102/112011-07-03 → 2011-07-08
    Hazardous operations
    Brazil-east Coast
  9. HYDROLANT 1084/112011-07-01 → 2011-07-06
    Gunnery exercises 061000Z to 061800Z jul within ten miles of 05-30S 034-50W
    Brazil-northeast Coast · Gunnery
  10. HYDROLANT 1083/112011-06-30 → 2011-07-05
    Hazardous operations
    Brazil-east Coast
  11. HYDROLANT 1043/112011-06-25 → 2011-06-30
    Hazardous operations
    Brazil-south Coast
  12. HYDROLANT 1032/112011-06-22 → 2011-06-24
    Gunnery exercises 1000Z to 0001Z commencing daily 22 and 23 jun in area bound by 34-39.46S 054-08.63W,…
    Uruguay-southeast Coast · Gunnery
  13. HYDROLANT 984/112011-06-13 → 2011-06-19
    Hazardous operations
    Brazil-south Coast
  14. HYDROLANT 971/112011-06-11 → 2011-06-16
    Hazardous operations
    Brazil-south Coast
  15. HYDROLANT 968/112011-06-10 → 2011-06-16
    Hazardous operations
    Brazil-south Coast
  16. HYDROLANT 906/112011-05-31 → 2011-06-05
    Hazardous operations
    Brazil-south Coast
  17. HYDROLANT 905/112011-05-30 → 2011-06-05
    Hazardous operations
    Brazil-south Coast
  18. HYDROLANT 898/112011-05-29 → 2011-06-03
    Hazardous operations
    Brazil-south Coast
  19. HYDROLANT 844/112011-05-19 → 2011-05-26
    Hazardous operations 1. hazardous operations 0900Z to 2130Z 24 thru 26 may in area bound by 22-58.72S…
    Brazil-south Coast
  20. HYDROLANT 841/112011-05-18 → 2011-05-18
    Hazardous operations
    Brazil-southeast Coast
  21. HYDROLANT 815/112011-05-13 → 2011-05-18
    Hazardous operations
    Brazil-south Coast
  22. HYDROLANT 805/112011-05-12 → 2011-05-17
    Hazardous operations
    Brazil-south Coast
  23. HYDROLANT 797/112011-05-11 → 2011-05-20
    Hazardous operations
    Brazil-south Coast
  24. HYDROLANT 725/112011-04-29 → 2011-05-04
    Hazardous operations
    Brazil-south Coast
  25. HYDROLANT 724/112011-04-28 → 2011-05-03
    Hazardous operations
    Brazil-south Coast
  26. HYDROLANT 723/112011-04-28 → 2011-05-03
    Hazardous operations
    Brazil-south Coast
  27. HYDROLANT 647/112011-04-18 → 2011-04-23
    Hazardous operations
    Brazil-southeast Coast
  28. HYDROLANT 641/112011-04-17 → 2011-04-23
    Hazardous operations
    Brazil-east Coast
  29. HYDROLANT 634/112011-04-16 → 2011-04-19
    Gunnery exercises 191100Z to 191500Z apr within ten miles of 23-31S 042-00W 2. cancel this msg 191600Z apr
    Brazil-south Coast · Gunnery
  30. HYDROLANT 633/112011-04-15 → 2011-04-21
    Gunnery exercises 1100Z to 1500Z daily 20 and 21 apr in area bound by 30-14.0S 049-51.0W, 30-38.0S…
    Brazil-south Coast · Gunnery
  31. HYDROLANT 631/112011-04-15 → 2011-04-22
    Hazardous operations
    Brazil-east Coast
  32. HYDROLANT 628/112011-04-15 → 2011-04-15
    Hazardous operations
    Brazil-south Coast
  33. HYDROLANT 622/112011-04-14 → 2011-04-20
    Hazardous operations
    Brazil-east Coast
  34. HYDROLANT 606/112011-04-12 → 2011-04-14
    Hazardous operations
    Brazil-southeast Coast
  35. HYDROLANT 595/112011-04-09 → 2011-04-14
    Hazardous operations
    Brazil-east Coast
  36. HYDROLANT 590/112011-04-08 → 2011-04-14
    Gunnery exercises 131600Z to 140100Z apr in area bound by 29-40.5S 049-19.0W, 30-06.0S 048-44.0W, 28-59.7S…
    Brazil-south Coast · Gunnery
  37. HYDROLANT 576/112011-04-06 → 2011-04-12
    Hazardous operations 1. hazardous operations 112200Z to 120100Z apr in area bound by 21-48.0S 038-33.0W,…
    Brazil-southeast Coast
  38. HYDROLANT 570/112011-04-05 → 2011-04-11
    Hazardous operations
    Brazil-south Coast
  39. HYDROLANT 549/112011-04-01 → 2011-04-08
    Hazardous operations
    Brazil-southeast Coast
  40. HYDROLANT 530/112011-03-30 → 2011-04-01
    Hazardous operations
    Brazil-south Coast
  41. HYDROLANT 509/112011-03-27 → 2011-04-01
    Gunnery exercises 011200Z to 011500Z apr within ten miles of 05-30S 034-50W
    Brazil-northeast Coast · Gunnery
  42. HYDROLANT 493/112011-03-25 → 2011-03-31
    Hazardous operations
    Brazil-south Coast
  43. HYDROLANT 490/112011-03-24 → 2011-03-30
    Hazardous operations
    Brazil-south Coast
  44. HYDROLANT 457/112011-03-19 → 2011-03-21
    Hazardous operations
    Brazil-south Coast
  45. HYDROLANT 451/112011-03-19 → 2011-03-24
    Gunnery exercises 241200Z to 241500Z mar within ten miles of 05-30S 034-50W
    Brazil-northeast Coast · Gunnery
  46. HYDROLANT 450/112011-03-19 → 2011-03-24
    Gunnery exercises 241300Z to 241800Z mar within three miles of 13-10S 038-12W
    Brazil-east Coast · Gunnery
  47. HYDROLANT 443/112011-03-18 → 2011-03-22
    Hazardous operations
    Brazil-south Coast
  48. HYDROLANT 426/112011-03-16 → 2011-03-19
    Gunnery exercises 0800Z to 2030Z daily 21 mar thru 04 apr a. in area bound by 05-42.53S 034-45.02W,…
    Brazil-east Coast · Gunnery
  49. HYDROLANT 340/112011-02-28 → 2011-03-09
    Hazardous operations
    Brazil-east Coast
  50. HYDROLANT 298/112011-02-19 → 2011-02-25
    Hazardous operations
    Brazil-south 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.

Military exercises in the South Atlantic Ocean — page 28 · seahazards