Southern Ocean

IHO sea area 67 · -180° to 180° E, -86° to -60° N

in force
3
last 12 months
4
since 1999
3,132
categories
9

In force now · 3

  1. HYDROLANT 1570/26 · Icebergs2026-08-14
    Icebergs reported in the Scotia Sea and Antarctica at several coordinates; message cancels August 15, 2026, 06:32 UTC.
  2. HYDROPAC 2289/26 · Missiles2026-08-10
    Space debris hazard operations daily 13 to 26 August, 2100Z to 1800Z, in the South Pacific.
  3. HYDROLANT 1279/26 · Icebergs2026-06-30
    Icebergs are reported in South Atlantic, South Pacific, and Antarctica at positions A81, A84, A85, D33A, D33C; cancel message 011327Z July 26.

Longest in force

  1. HYDROLANT 1279/26 · Icebergs2026-06-30
    Icebergs are reported in South Atlantic, South Pacific, and Antarctica at positions A81, A84, A85, D33A, D33C; cancel message 011327Z July 26.
  2. HYDROPAC 2289/26 · Missiles2026-08-10
    Space debris hazard operations daily 13 to 26 August, 2100Z to 1800Z, in the South Pacific.
  3. HYDROLANT 1570/26 · Icebergs2026-08-14
    Icebergs reported in the Scotia Sea and Antarctica at several coordinates; message cancels August 15, 2026, 06:32 UTC.

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

By category · since 1997

Icebergs2,99195%
Surveys421%
Missiles381%
Nav aids241%
Other181%
Wrecks120%
Derelicts40%
Exercises20%
Containers10%

Archive · 3,129 cancelled

  1. HYDROLANT 1569/21 · Icebergs2021-06-11 → 2021-06-12
    Icebergs reported in: a. A63, 66-53S 057-04W
  2. HYDROLANT 1557/21 · Icebergs2021-06-10 → 2021-06-11
    Icebergs reported in: a. A63, 66-53S 057-04W
  3. HYDROLANT 1550/21 · Icebergs2021-06-09 → 2021-06-10
    Icebergs reported in: a. A63, 66-53S 057-04W
  4. HYDROLANT 1538/21 · Icebergs2021-06-08 → 2021-06-09
    Icebergs reported in: a. A63, 66-53S 057-04W
  5. HYDROLANT 1528/21 · Icebergs2021-06-07 → 2021-06-08
    Icebergs reported in: a. A63, 68-10S 056-11W
  6. HYDROLANT 1509/21 · Icebergs2021-06-05 → 2021-06-06
    Iceberg reported in 60-40S 023-33W
  7. HYDROLANT 1506/21 · Icebergs2021-06-05 → 2021-06-06
    Icebergs reported in: a. A63, 68-10S 056-11W
  8. HYDROLANT 1498/21 · Icebergs2021-06-04 → 2021-06-05
    Icebergs reported in: a. A63, 68-10S 056-11W
  9. HYDROLANT 1497/21 · Icebergs2021-06-04 → 2021-06-05
    Iceberg reported in 60-40S 023-33W
  10. HYDROLANT 1492/21 · Icebergs2021-06-03 → 2021-06-04
    Icebergs reported in 60-40S 023-33W
  11. HYDROLANT 1487/21 · Icebergs2021-06-02 → 2021-06-03
    Icebergs reported in: a. A63, 68-10S 056-11W
  12. HYDROLANT 1477/21 · Icebergs2021-06-01 → 2021-06-02
    Icebergs reported in: a. A63, 68-10S 056-11W
  13. HYDROLANT 1468/21 · Icebergs2021-05-31 → 2021-06-01
    Icebergs reported in: a. A63, 67-37S 056-11W
  14. HYDROLANT 1455/21 · Icebergs2021-05-30 → 2021-05-31
    Icebergs reported in: a. A63, 68-10S 055-50W
  15. HYDROLANT 1447/21 · Icebergs2021-05-29 → 2021-05-30
    Icebergs reported in: a. A63, 68-10S 055-50W
  16. HYDROLANT 1440/21 · Icebergs2021-05-28 → 2021-05-29
    Icebergs reported in: a. A63, 68-10S 055-50W
  17. HYDROLANT 1424/21 · Icebergs2021-05-27 → 2021-05-28
    Icebergs reported in: a. A63, 68-06S 056-17W
  18. HYDROLANT 1417/21 · Icebergs2021-05-26 → 2021-05-27
    Icebergs reported in: a. A63, 68-06S 056-17W
  19. HYDROLANT 1403/21 · Icebergs2021-05-25 → 2021-05-26
    Icebergs reported in: a. A63, 68-06S 056-17W
  20. HYDROLANT 1393/21 · Icebergs2021-05-24 → 2021-05-25
    Icebergs reported in: a. A63, 68-06S 056-17W

Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.