Southern Ocean

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

in force
3
last 12 months
3
since 1999
3,131
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

Icebergs2,99095%
Surveys421%
Missiles381%
Nav aids241%
Other181%
Wrecks120%
Derelicts40%
Exercises20%
Containers10%

Archive · 3,128 cancelled

  1. HYDROLANT 1747/23 · Icebergs2023-08-07 → 2023-08-08
    Icebergs reported in: a. A23A, 70-30.00S 055-03.00W
  2. HYDROLANT 1743/23 · Icebergs2023-08-06 → 2023-08-07
    Icebergs reported in: a. A23A, 66-34.20S 055-03.00W
  3. HYDROLANT 1737/23 · Icebergs2023-08-05 → 2023-08-06
    Icebergs reported in: a. A23A, 70-30.00S 055-03.00W
  4. HYDROLANT 1733/23 · Icebergs2023-08-04 → 2023-08-05
    Icebergs reported in: a. A23A, 70-30.00S 055-03.00W
  5. HYDROLANT 1723/23 · Icebergs2023-08-03 → 2023-08-04
    Icebergs reported in: a. A23A, 70-30.00S 055-03.00W
  6. HYDROLANT 1716/23 · Icebergs2023-08-02 → 2023-08-03
    Icebergs reported in: a. A23A, 70-30.00S 055-03.00W
  7. HYDROLANT 1713/23 · Icebergs2023-08-02 → 2023-08-05
    Icebergs sighted in: a. 62-05.90S 056-25.60W
  8. HYDROLANT 1712/23 · Icebergs2023-08-01 → 2023-08-02
    Icebergs reported in: a. A23A, 70-30.00S 055-03.00W
  9. HYDROLANT 1708/23 · Icebergs2023-07-31 → 2023-08-01
    Icebergs reported in: a. A23A, 67-48.60S 055-33.00W
  10. HYDROLANT 1698/23 · Icebergs2023-07-30 → 2023-07-31
    Icebergs reported in: a. A23A, 67-48.60S 055-33.00W
  11. HYDROLANT 1697/23 · Icebergs2023-07-29 → 2023-07-30
    Icebergs reported in: a. A23A, 67-48.60S 055-33.00W
  12. HYDROLANT 1694/23 · Icebergs2023-07-28 → 2023-07-29
    Icebergs reported in: a. A23A, 67-48.60S 055-33.00W
  13. HYDROLANT 1690/23 · Icebergs2023-07-28 → 2023-07-31
    Icebergs reported in: a. 62-09.00S 056-31.00W
  14. HYDROLANT 1689/23 · Icebergs2023-07-27 → 2023-07-28
    Icebergs reported in: a. A23A, 67-48.60S 055-33.00W
  15. HYDROLANT 1682/23 · Icebergs2023-07-26 → 2023-07-27
    Icebergs reported in: a. A23A, 67-48.60S 055-33.00W
  16. HYDROLANT 1669/23 · Icebergs2023-07-25 → 2023-07-26
    Icebergs reported in: a. A23A, 67-48.60S 055-33.00W
  17. HYDROLANT 1660/23 · Icebergs2023-07-24 → 2023-07-25
    Icebergs reported in: a. A23A, 67-48.60S 055-33.00W
  18. HYDROLANT 1652/23 · Icebergs2023-07-22 → 2023-07-23
    Icebergs reported in: a. A23A, 67-48.60S 055-33.00W
  19. HYDROLANT 1649/23 · Icebergs2023-07-22 → 2023-07-25
    Icebergs reported in: a. 62-22.00S 056-46.00W
  20. HYDROLANT 1643/23 · Icebergs2023-07-21 → 2023-07-22
    Icebergs reported in: a. A23A, 67-48.60S 055-33.00W

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