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 26/092009-01-05 → 2009-01-11
    Hazardous operations 102100Z to 110100Z jan within 30 miles of 18-33S 038-30W
  2. HYDROLANT 2214/082008-12-20 → 2008-12-31
    Hazardous operations 230300Z to 310300Z dec in area bound by 14-21.00S 038-59.75W, 14-25.00S 039-00.50W,…
  3. HYDROLANT 2171/082008-12-16 → 2008-12-21
    Hazardous operations 212130Z to 212215Z dec within five miles of 23-54S 045-05W
  4. HYDROLANT 2138/082008-12-12 → 2008-12-17
    Hazardous operations 171100Z to 172000Z dec within ten miles of 14-46S 038-38W
  5. HYDROLANT 2132/082008-12-12 → 2008-12-17
    Gunnery exercises 171400Z to 172100Z dec within 10 miles of 32-00S 051-30W
  6. HYDROLANT 2118/082008-12-09 → 2008-12-11
    Hazardous operations 101400Z to 110200Z dec in area bound by 23-35S 044-12W, 24-14S 043-55W, 24-36S 044-58W,…
  7. HYDROPAC 2429/082008-12-08 → 2008-12-11
    Gunnery exercises 0800Z to 1600Z daily 08 thru 11 dec in area bound by 34-20S 018-30E, 34-20S 018-47E,…
  8. HYDROLANT 2114/082008-12-08 → 2008-12-11
    Gunnery exercises 0800Z to 1600Z daily 08 thru 11 dec in area bound by 34-20S 018-30E, 34-20S 018-47E,…
  9. HYDROLANT 2103/082008-12-07 → 2008-12-19
    Hazardous operations 120001Z to 190001Z dec in area bound by 12-25S 037-53W, 12-25S 037-49W, 12-28S 037-56W,…
  10. HYDROLANT 2072/082008-12-03 → 2008-12-09
    Hazardous operations 082100Z to 082300Z dec within five miles of 31-23.4S 050-36.9W
  11. HYDROLANT 2071/082008-12-03 → 2008-12-03
    Hazardous operations 031100Z to 032000Z dec in area bound by 30-18S 050-04W, 30-32S 050-11W, 30-50S 049-37W,…
  12. HYDROLANT 2065/082008-12-02 → 2008-12-04
    Hazardous operations 021400Z to 022130Z dec and 0830Z to 2130Z daily 03 and 04 dec in area bound by…
  13. HYDROLANT 2052/082008-11-27 → 2008-12-05
    Hazardous operations 020900Z to 052100Z dec in area bound by 23-07.00S 043-57.08W, 23-03.08S 043-58.08W,…
  14. HYDROLANT 2025/082008-11-24 → 2008-11-28
    Hazardous operations 1100Z to 1300Z and 1600Z to 1800Z daily 26 thru 28 nov in area bound by 30-18S 050-04W,…
  15. HYDROLANT 2013/082008-11-22 → 2008-11-28
    Hazardous operations 1200Z to 1900Z daily 27 and 28 nov within 2.5 miles of 02-17S 044-21W
  16. HYDROLANT 2008/082008-11-21 → 2008-11-26
    Gunnery exercises 261000Z to 261200Z nov in area bound by 33-21.00S 052-47.90W, 33-33.45S 052-28.02W,…
  17. HYDROLANT 1994/082008-11-20 → 2008-11-26
    Gunnery exercises 252100Z to 260200Z nov within 20 miles of: 33-49S 051-34W
  18. HYDROLANT 1986/082008-11-18 → 2008-11-20
    Hazardous operations 191300Z to 192100Z and 201000Z to 202000Z nov in area bound by 23-27.03S 043-52.03W,…
  19. HYDROLANT 1978/082008-11-16 → 2008-11-18
    Hazardous operations 180800Z to 181900Z nov in areas bound by: a. 24-35S 043-33W, 24-35S 044-23W, 25-14S…
  20. HYDROLANT 1959/082008-11-14 → 2008-11-19
    Hazardous operations 182000Z to 190500Z nov in area bound by 25-42S 045-17W, 24-47S 044-13W, 25-17S 043-42W,…
  21. HYDROLANT 1955/082008-11-14 → 2008-11-20
    Hazardous operations 192200Z to 200200Z nov within 20 miles of 28-06S 047-32W
  22. HYDROLANT 1954/082008-11-14 → 2008-11-19
    Hazardous operations 190900Z to 191500Z nov within 25 miles of 25-28S 044-21W
  23. HYDROLANT 1937/082008-11-12 → 2008-11-17
    Hazardous operations 171500Z to 171900Z nov within 10 miles of 14-46S 038-38W
  24. HYDROLANT 1933/082008-11-11 → 2008-12-13
    Gunnery exercises 16 nov thru 12 dec: a. in area bound by 05-42.53S 034-45.02W, 06-09.83S 034-46.82W,…
  25. HYDROLANT 1922/082008-11-09 → 2008-11-14
    Gunnery exercises 141000Z to 141900Z nov within 20 miles of 03-24.6S 037-44.8W
  26. HYDROLANT 1899/082008-11-06 → 2008-11-11
    Hazardous operations 1200Z to 1800Z daily 10 and 11 nov within 5 miles of 32-25.5S 052-00.0W
  27. HYDROLANT 1886/082008-11-05 → 2008-11-10
    Hazardous operations 101500Z to 101900Z nov within ten miles of 14-46S 038-38W
  28. HYDROLANT 1851/082008-10-31 → 2008-11-01
    Hazardous operations 0830Z to 2130Z daily 04 thru 07 nov in area bound by 22-58.72S 042-02.15W, 23-01.00S…
  29. HYDROLANT 1850/082008-10-31 → 2008-11-04
    Hazardous operations 041000Z to 041900Z nov within ten miles of 29-22.5S 049-26.5W
  30. HYDROLANT 1846/082008-10-31 → 2008-11-06
    Hazardous operations 051400Z to 062000Z nov in area bound by 21-00.0S 040-18.0W, 21-08.5S 040-05.5W,…
  31. HYDROLANT 1794/082008-10-26 → 2008-10-31
    Hazardous operations 311000Z to 311600Z oct within 15 miles of 06-35S 034-22W
  32. HYDROLANT 1791/082008-10-26 → 2008-10-31
    Hazardous operations 311000Z to 311230Z oct in area bound by 23-35.00S 044-17.00W, 23-47.00S 044-11.00W,…
  33. HYDROLANT 1769/082008-10-23 → 2008-10-28
    Gunnery exercises 281200Z to 282100Z within 15 miles of 29-00.0S 048-30.0W
  34. HYDROLANT 1762/082008-10-22 → 2008-10-23
    Hazardous operations 221100Z to 230001Z oct in area bound by 33-42.72S 053-20.62W, 33-39.20S 053-14.58W,…
  35. HYDROLANT 1732/082008-10-17 → 2008-10-22
    Hazardous operations 1100Z to 1500Z and 1600Z to 2000Z daily 21 and 22 oct in area bound by 22-57.58S…
  36. HYDROLANT 1716/082008-10-15 → 2008-10-24
    Gunnery exercises 200900Z to 242100Z oct in area bound by 23-07.00S 043-57.08W, 23-03.08S 043-58.08W,…
  37. HYDROLANT 1699/082008-10-13 → 2008-10-22
    Hazardous operations 1100Z to 2000Z daily 18 thru 22 oct in area bound by 33-42.72S 053-20.62W, 33-39.20S…
  38. HYDROLANT 1696/082008-10-12 → 2008-11-01
    Hazardous operations 0001Z to 2359Z daily 17 thru 31 oct in areas bound by: a. 05-54.2S 035-11.0W, 05-50.0S…
  39. HYDROLANT 1678/082008-10-10 → 2008-10-15
    Hazardous operations 151100Z to 151900Z oct within 20 miles of 14-40S 038-00W
  40. HYDROLANT 1663/082008-10-08 → 2008-10-16
    Gunnery exercises 1000Z to 2030Z daily 13 thru 16 oct in area bound by 05-52.83S 035-06.50W, 05-50.00S…
  41. HYDROLANT 1661/082008-10-08 → 2008-10-08
    Gunnery exercises 1000Z to 2030Z daily 13 thru 16 oct in area bound by 05-52.83S 035-06.50W, 05-50.00S…
  42. HYDROLANT 1645/082008-10-06 → 2008-10-11
    Gunnery exercises 111200Z to 111600Z oct within five miles of 14-46S 038-34W
  43. HYDROLANT 1622/082008-10-02 → 2008-10-09
    Gunnery exercises 1200Z to 1900Z daily 07 thru 09 oct in area bound by 24-00.00S 046-24.00W, 24-10.00S…
  44. HYDROLANT 1615/082008-10-01 → 2008-10-18
    Gunnery exercises 0900Z to 2000Z daily 06 thru 18 oct: a. in area bound by 05-42.53S 034-45.02W, 06-09.83S…
  45. HYDROLANT 1584/082008-09-27 → 2008-10-02
    Gunnery excercises 021500Z to 022000Z oct within 20 miles of 05-10S 034-14W
  46. HYDROLANT 1556/082008-09-24 → 2008-10-11
    Gunnery exercises 1000Z to 1930Z daily 29 sep thru 04 oct and 06 thru 11 oct in area bound by 07-31.63S…
  47. HYDROLANT 1555/082008-09-24 → 2008-10-02
    Hazardous operations 291800Z to 292130Z sep and 0930Z to 2130Z daily 30 sep thru 02 oct in area bound by…
  48. HYDROLANT 1532/082008-09-20 → 2008-09-25
    Hazardous operations 251500Z to 252000Z sep within ten miles of 24-00S 043-00W
  49. HYDROLANT 1504/082008-09-17 → 2008-09-26
    Hazardous operations 1200Z to 1930Z daily 22 thru 26 sep in area bound by 05-55.35S 035-06.80W, 05-57.45S…
  50. HYDROLANT 1495/082008-09-16 → 2008-09-22
    Hazardous operations 211600Z to 220100Z sep in area bound by 20-49S 039-12W, 21-10S 039-12W, 21-10S 040-20W,…

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 33 · seahazards