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 1192/102010-06-26 → 2010-07-01
    Hazardous operations
    Brazil-south Coast
  2. HYDROLANT 1177/102010-06-25 → 2010-06-25
    Gunnery exercises 301000Z jun to 011700Z jul within five miles of 05-48.0S 034-44.5W
    Brazil-east Coast · Gunnery
  3. HYDROLANT 1176/102010-06-25 → 2010-07-02
    Hazardous operations
    Brazil-southeast Coast
  4. HYDROLANT 1078/102010-06-11 → 2010-06-18
    Hazardous operations
    Brazil-southeast Coast
  5. HYDROLANT 1077/102010-06-11 → 2010-06-17
    Hazardous operations
    Brazil-south Coast
  6. HYDROLANT 1062/102010-06-09 → 2010-06-16
    Gunnery exercises 0900Z to 2100Z daily 14 thru 16 jun within 2.5 miles of 05-56.20S 035-08.53W
    Brazil-northeast Coast · Gunnery
  7. HYDROLANT 1037/102010-06-06 → 2010-06-10
    Hazardous operations
    Eastern South Atlantic
  8. HYDROLANT 960/102010-05-27 → 2010-06-02
    Hazardous operations
    Brazil-south Coast
  9. HYDROLANT 920/102010-05-22 → 2010-06-14
    Gunnery exercises 27 may thru 13 jun in area bound by 27-52.18S 048-14.35W, 27-59.35S 048-03.47W, 28-33.68S…
    Brazil-south Coast · Gunnery
  10. HYDROLANT 893/102010-05-18 → 2010-05-24
    Hazardous operations
    Brazil-northeast Coast
  11. HYDROLANT 866/102010-05-15 → 2010-05-21
    Hazardous operations
    Brazil-south Coast
  12. HYDROLANT 834/102010-05-12 → 2010-05-21
    Hazardous operations
    Brazil-south Coast
  13. HYDROLANT 801/102010-05-07 → 2010-06-03
    Gunnery exercises in progress until 032000Z jun: a. in area bound by 05-42.53S 034-45.02W, 06-09.83S…
    Brazil-northeast Coast · Gunnery
  14. HYDROLANT 765/102010-05-02 → 2010-05-07
    Hazardous operations
    Brazil-south Coast
  15. HYDROLANT 761/102010-05-01 → 2010-05-05
    Gunnery exercises 050900Z to 051700Z may in area bound by 31-37.83S 048-22.83W, 31-15.00S 048-08.00W,…
    Brazil-south Coast · Gunnery
  16. HYDROLANT 760/102010-05-01 → 2010-05-05
    Hazardous operations
    Brazil-south Coast
  17. HYDROLANT 759/102010-05-01 → 2010-05-07
    Hazardous operations
    Brazil-south Coast
  18. HYDROLANT 743/102010-04-28 → 2010-05-07
    Gunnery exercises 03 thru 17 may: a. in area bound by 05-42.53S 034-45.02W, 06-09.83S 034-46.82W, 06-03.93S…
    Brazil-northeast Coast · Gunnery
  19. HYDROLANT 666/102010-04-17 → 2010-04-24
    Hazardous operations
    Brazil-southeast Coast
  20. HYDROLANT 578/102010-04-03 → 2010-04-16
    Hazardous operations
    Brazil-southeast Coast
  21. HYDROLANT 523/102010-03-26 → 2010-03-30
    Hazardous operations
    Brazil-southeast Coast
  22. HYDROLANT 464/102010-03-18 → 2010-03-22
    Hazardous operations
    South Atlantic · Gulf of Guinea
  23. HYDROLANT 463/102010-03-18 → 2010-03-23
    Hazardous operations
    Brazil-south Coast
  24. HYDROLANT 430/102010-03-12 → 2010-03-19
    Hazardous operations
    Brazil-south Coast
  25. HYDROLANT 308/102010-02-18 → 2010-02-24
    Gunnery exercises 231600Z to 232300Z feb within five miles of 29-17.5S 048-55.0W
    Brazil-south Coast · Gunnery
  26. HYDROLANT 307/102010-02-17 → 2010-02-23
    Gunnery exercises 230800Z to 231500Z feb within ten miles of 30-05.5S 049-31.0W
    Brazil-south Coast · Gunnery
  27. HYDROLANT 302/102010-02-17 → 2010-02-23
    Gunnery exercises 221500Z to 230001Z feb within ten miles of 31-50S 051-00W
    Brazil-south Coast · Gunnery
  28. HYDROLANT 301/102010-02-17 → 2010-03-13
    Gunnery exercises 22 feb thru 12 mar: a. in area bound by 05-42.53S 034-45.02W, 06-09.83S 034-46.82W,…
    Brazil-northeast Coast · Gunnery
  29. HYDROLANT 100/102010-01-16 → 2010-01-22
    Hazardous operations
    Brazil-northeast Coast
  30. HYDROLANT 87/102010-01-15 → 2010-01-20
    Gunnery exercises 200900Z to 201500Z jan in area bound by 11-03.5S 035-10.0W, 11-17.0S 034-32.5W, 11-41.0S…
    Brazil-east Coast · Gunnery
  31. HYDROLANT 76/102010-01-14 → 2010-01-19
    Hazardous operations
    Brazil-east Coast
  32. HYDROLANT 66/102010-01-13 → 2010-01-19
    Hazardous operations
    Brazil-south Coast
  33. HYDROLANT 7/102010-01-02 → 2010-01-08
    Gunnery exercises 071800Z to 072330Z jan in area bound by 29-33.0S 048-50.5W, 29-12.5S 048-33.5W, 28-59.0S…
    Brazil-south Coast · Gunnery
  34. HYDROLANT 2463/092009-12-18 → 2009-12-21
    Hazardous operations 191940Z to 200050Z dec, alternate 201940Z to 210050Z dec in area bound by 05-00S…
  35. HYDROLANT 2454/092009-12-17 → 2009-12-18
    Hazardous operations 181940Z to 190050Z dec, alternate 191940Z to 200050Z dec in area bound by 05-00S…
  36. HYDROLANT 2449/092009-12-16 → 2009-12-21
    Gunnery exercises 211000Z to 212000Z dec within 20 miles of 32-00.0S 051-12.5W
  37. HYDROLANT 2441/092009-12-15 → 2009-12-20
    Gunnery exercises 201400Z to 201600Z dec within 0.5 miles of 21-00.0S 040-21.4W
  38. HYDROLANT 2434/092009-12-13 → 2009-12-19
    Gunnery exercises 180900Z to 182300Z dec within ten miles of 11-02S 036-00W
  39. HYDROLANT 2433/092009-12-13 → 2009-12-18
    Hazardous operations 181000Z to 181200Z dec within ten miles of 23-45S 044-20W
  40. HYDROLANT 2415/092009-12-12 → 2009-12-30
    Hazardous operations 1000Z to 2000Z daily 12 thru 18, 21 thru 23 and 28 thru 30 dec in areas: a. bound by…
  41. HYDROLANT 2408/092009-12-11 → 2009-12-15
    Hazardous operations 142000Z to 150200Z dec within 15 miles of 20-35S 039-25W
  42. HYDROLANT 2352/092009-12-03 → 2009-12-09
    Hazardous operations in progress until further notice within five miles of 14-32S 038-56W
  43. HYDROLANT 2337/092009-12-02 → 2009-12-08
    Hazardous operations 070900Z to 072300Z dec within ten miles of 14-45.83S 038-10.00W
  44. HYDROLANT 2318/092009-11-29 → 2009-12-04
    Hazardous operations 030900Z to 032300Z dec within ten miles of 13-44S 037-55W
  45. HYDROLANT 2307/092009-11-27 → 2009-12-02
    Gunnery exercises 021000Z to 022000Z dec in area bound by 26-57S 046-53W, 27-20S 046-20W, 28-31S 047-17W,…
  46. HYDROLANT 2306/092009-11-27 → 2009-12-03
    Gunnery exercises 022200Z to 030001Z dec in area bound by 27-06S 046-09W, 26-46S 046-39W, 26-30S 046-26W,…
  47. HYDROLANT 2298/092009-11-26 → 2009-12-01
    Hazardous operations 010800Z to 012000Z dec in area bound by 24-01S 045-35W, 24-02S 045-46W, 24-14S 045-51W,…
  48. HYDROLANT 2266/092009-11-21 → 2009-11-20
    Hazardous operations 1200Z to 1900Z daily 23, 24, 26, 27 and 30 nov within 22 miles of 06-02.0S 034-35.4W
  49. HYDROLANT 2259/092009-11-20 → 2009-12-11
    Hazardous operations 251000Z to 272000Z nov, 301000Z nov to 032000Z dec and 071000Z to 112000Z dec in areas…
  50. HYDROLANT 2233/092009-11-18 → 2009-11-25
    Hazardous operations 231500Z to 232000Z, 241000Z to 241900Z and 251000Z to 251200Z nov in areas: a. bound by…

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 30 · seahazards