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 1355/23 · Icebergs2023-06-18 → 2023-06-19
    Icebergs reported in: a. A23A, 70-12.00S 055-34.20W
  2. HYDROLANT 1349/23 · Icebergs2023-06-17 → 2023-06-18
    Icebergs reported in: a. A23A, 70-12.00S 055-34.20W
  3. HYDROLANT 1337/23 · Icebergs2023-06-16 → 2023-06-17
    Icebergs reported in: a. A23A, 70-12.00S 055-34.20W
  4. HYDROLANT 1329/23 · Icebergs2023-06-15 → 2023-06-16
    Icebergs reported in: a. A23A, 70-12.00S 055-34.20W
  5. HYDROLANT 1322/23 · Icebergs2023-06-14 → 2023-06-15
    Icebergs reported in: a. A23A, 70-12.00S 055-34.20W
  6. HYDROLANT 1312/23 · Icebergs2023-06-13 → 2023-06-14
    Icebergs reported in: a. A23A, 70-12.00S 055-34.20W
  7. HYDROLANT 1311/23 · Icebergs2023-06-13 → 2023-06-16
    Iceberg reported in vicinity 62-20.10S 054-59.20W
  8. HYDROLANT 1304/23 · Icebergs2023-06-12 → 2023-06-13
    Icebergs reported in: a. A23A, 70-45.60S 054-30.00W
  9. HYDROLANT 1295/23 · Icebergs2023-06-11 → 2023-06-12
    Icebergs reported in: a. A23A, 70-45.60S 054-30.00W
  10. HYDROLANT 1289/23 · Icebergs2023-06-10 → 2023-06-11
    Icebergs reported in: a. A23A, 70-45.60S 054-30.00W
  11. HYDROLANT 1283/23 · Icebergs2023-06-09 → 2023-06-10
    Icebergs reported in: a. A23A, 70-45.60S 054-30.00W
  12. HYDROLANT 1273/23 · Icebergs2023-06-08 → 2023-06-09
    Icebergs reported in: a. A23A, 70-45.60S 054-30.00W
  13. HYDROLANT 1260/23 · Icebergs2023-06-07 → 2023-06-08
    Icebergs reported in: a. A23A, 70-45.60S 054-30.00W
  14. HYDROLANT 1254/23 · Icebergs2023-06-06 → 2023-06-07
    Icebergs reported in: a. A23A, 70-45.60S 054-30.00W
  15. HYDROLANT 1247/23 · Icebergs2023-06-05 → 2023-06-06
    Icebergs reported in: a. A23A, 70-45.60S 054-30.00W
  16. HYDROLANT 1242/23 · Icebergs2023-06-04 → 2023-06-05
    Icebergs reported in: a. A23A, 70-45.60S 054-30.00W
  17. HYDROLANT 1240/23 · Icebergs2023-06-03 → 2023-06-04
    Icebergs reported in: a. A23A, 70-45.60S 054-30.00W
  18. HYDROLANT 1232/23 · Icebergs2023-06-02 → 2023-06-03
    Icebergs reported in: a. A23A, 71-01.20S 054-07.80W
  19. HYDROLANT 1221/23 · Icebergs2023-06-01 → 2023-06-02
    Icebergs reported in: a. A23A, 71-01.20S 054-07.80W
  20. HYDROLANT 1212/23 · Icebergs2023-05-31 → 2023-06-01
    Icebergs reported in: a. A23A, 71-01.20S 054-07.80W

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