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 342/22 · Icebergs2022-02-03 → 2022-02-04
    Icebergs reported in: a. A64, 67-13S 059-40W
  2. HYDROLANT 341/22 · Icebergs2022-02-03 → 2022-02-04
    Icebergs reported in: a. B09I, 56-48S 029-33W
  3. HYDROLANT 340/22 · Icebergs2022-02-03 → 2022-02-04
    Icebergs reported in: a. B09I, 56-48S 029-33W
  4. HYDROLANT 331/22 · Icebergs2022-02-03 → 2022-02-03
    Icebergs reported in: a. B09I, 56-46S 029-32W
  5. HYDROLANT 330/22 · Icebergs2022-02-03 → 2022-02-03
    Icebergs reported in: a. A64, 67-13S 059-40W
  6. HYDROLANT 323/22 · Icebergs2022-02-03 → 2022-02-02
    Icebergs reported in: a. A64, 67-13S 059-40W
  7. HYDROLANT 309/22 · Icebergs2022-01-31 → 2022-02-01
    Icebergs reported in: a. A64, 67-13S 059-40W
  8. HYDROLANT 300/22 · Icebergs2022-01-30 → 2022-01-31
    Icebergs reported in: a. A64, 67-12S 059-25W
  9. HYDROLANT 299/22 · Icebergs2022-01-30 → 2022-01-31
    Icebergs reported in: a. B09I, 56-46S 029-14W
  10. HYDROLANT 289/22 · Icebergs2022-01-29 → 2022-01-30
    Icebergs reported in: a. A64, 67-12S 059-25W
  11. HYDROLANT 275/22 · Icebergs2022-01-28 → 2022-01-29
    Icebergs reported in: a. A64, 67-12S 059-25W
  12. HYDROLANT 259/22 · Icebergs2022-01-27 → 2022-01-28
    Icebergs reported in: a. A64, 67-12S 059-25W
  13. HYDROLANT 244/22 · Icebergs2022-01-26 → 2022-01-27
    Icebergs reported in: a. A64, 67-12S 059-25W
  14. HYDROLANT 235/22 · Icebergs2022-01-25 → 2022-01-26
    Icebergs reported in: a. A64, 67-12S 059-25W
  15. HYDROLANT 225/22 · Icebergs2022-01-24 → 2022-01-25
    Icebergs reported in: a. A64, 67-12S 059-25W
  16. HYDROLANT 217/22 · Icebergs2022-01-23 → 2022-01-24
    Icebergs reported in: a. A64, 67-12S 059-25W
  17. HYDROLANT 202/22 · Icebergs2022-01-22 → 2022-01-23
    Icebergs reported in: a. A64, 67-08S 059-11W
  18. HYDROLANT 195/22 · Icebergs2022-01-21 → 2022-01-22
    Icebergs reported in: a. A64, 67-08S 059-11W
  19. HYDROLANT 184/22 · Icebergs2022-01-20 → 2022-01-21
    Icebergs reported in: a. A64, 67-08S 059-11W
  20. HYDROLANT 174/22 · Icebergs2022-01-19 → 2022-01-20
    Icebergs reported in: a. A64, 67-08S 059-11W

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