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 1638/23 · Icebergs2023-07-20 → 2023-07-21
    Icebergs reported in: a. A23A, 67-48.60S 055-33.00W
  2. HYDROLANT 1629/23 · Icebergs2023-07-19 → 2023-07-20
    Icebergs reported in: a. A23A, 67-48.60S 055-33.00W
  3. HYDROLANT 1618/23 · Icebergs2023-07-18 → 2023-07-19
    Icebergs reported in: a. A23A, 67-48.60S 055-33.00W
  4. HYDROLANT 1610/23 · Icebergs2023-07-17 → 2023-07-18
    Icebergs reported in: a. A23A, 67-49.20S 055-33.00W
  5. HYDROLANT 1605/23 · Icebergs2023-07-16 → 2023-07-17
    Icebergs reported in: a. A23A, 67-49.20S 055-33.00W
  6. HYDROLANT 1599/23 · Icebergs2023-07-15 → 2023-07-16
    Icebergs reported in: a. A23A, 68-13.80S 055-40.80W
  7. HYDROLANT 1596/23 · Icebergs2023-07-15 → 2023-07-18
    Iceberg reported in 61-35.10S 053-28.90W
  8. HYDROLANT 1595/23 · Icebergs2023-07-15 → 2023-07-18
    Iceberg reported in 62-08.10S 055-23.90W
  9. HYDROLANT 1594/23 · Icebergs2023-07-15 → 2023-07-18
    Iceberg reported in 62-19.90S 057-02.20W
  10. HYDROLANT 1586/23 · Icebergs2023-07-14 → 2023-07-15
    Icebergs reported in: a. A23A, 68-13.80S 055-40.80W
  11. HYDROLANT 1577/23 · Icebergs2023-07-13 → 2023-07-14
    Icebergs reported in: a. A23A, 68-13.80S 055-40.80W
  12. HYDROLANT 1574/23 · Icebergs2023-07-12 → 2023-07-13
    Icebergs reported in: a. A23A, 68-13.80S 055-40.80W
  13. HYDROLANT 1566/23 · Icebergs2023-07-11 → 2023-07-12
    Icebergs reported in: a. A23A, 68-13.80S 055-40.80W
  14. HYDROLANT 1559/23 · Icebergs2023-07-11 → 2023-07-14
    Iceberg reported in vicinity 62-07.10S 055-33.10W
  15. HYDROLANT 1558/23 · Icebergs2023-07-11 → 2023-07-14
    Iceberg reported in vicinity 62-25.00S 057-03.80W
  16. HYDROLANT 1557/23 · Icebergs2023-07-11 → 2023-07-14
    Iceberg reported in vicinity 61-33.90S 053-28.60W
  17. HYDROLANT 1555/23 · Icebergs2023-07-10 → 2023-07-11
    Icebergs reported in: a. A23A, 68-19.80S 055-57.00W
  18. HYDROLANT 1548/23 · Icebergs2023-07-09 → 2023-07-10
    Icebergs reported in: a. A23A, 68-19.80S 055-57.00W
  19. HYDROLANT 1541/23 · Icebergs2023-07-08 → 2023-07-09
    Icebergs reported in: a. A23A, 68-19.80S 055-57.00W
  20. HYDROLANT 1534/23 · Icebergs2023-07-07 → 2023-07-08
    Icebergs reported in: a. A23A, 68-19.80S 055-57.00W

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