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 584/21 · Icebergs2021-02-27 → 2021-02-28
    Icebergs reported in: a. A63, 71-40S 054-54W
  2. HYDROLANT 567/21 · Icebergs2021-02-26 → 2021-02-27
    Icebergs reported in: a. A63, 71-40S 054-54W
  3. HYDROLANT 546/21 · Icebergs2021-02-25 → 2021-02-26
    Icebergs reported in: a. A63, 71-40S 054-54W
  4. HYDROLANT 535/21 · Wrecks2021-02-24 → 2021-04-13
    5.7 meter depth reported in 65-16.92S 064-22.96W
  5. HYDROLANT 534/21 · Icebergs2021-02-24 → 2021-02-25
    Icebergs reported in: a. A63, 71-40S 054-54W
  6. HYDROLANT 521/21 · Icebergs2021-02-23 → 2021-02-24
    Icebergs reported in: a. A63, 71-40S 054-54W
  7. HYDROLANT 513/21 · Icebergs2021-02-22 → 2021-02-23
    Icebergs reported in: a. A63, 71-40S 054-54W
  8. HYDROPAC 380/21 · Icebergs2021-01-29 → 2021-01-30
    Icebergs reported in: a. A64, 60-59S 069-44W
  9. HYDROPAC 366/21 · Icebergs2021-01-28 → 2021-01-29
    Icebergs reported in: a. A64, 60-59S 069-44W
  10. HYDROPAC 352/21 · Icebergs2021-01-27 → 2021-01-28
    Icebergs reported in: a. A64, 60-59S 069-44W
  11. HYDROPAC 342/21 · Icebergs2021-01-26 → 2021-01-27
    Icebergs reported in: a. A64, 60-59S 069-44W
  12. HYDROPAC 334/21 · Icebergs2021-01-25 → 2021-01-26
    Icebergs reported in: a. A64, 60-59S 069-44W
  13. HYDROPAC 315/21 · Icebergs2021-01-23 → 2021-01-24
    Icebergs reported in: a. A64, 60-59S 069-44W
  14. HYDROPAC 306/21 · Icebergs2021-01-22 → 2021-01-23
    Icebergs reported in: a. A64, 60-59S 069-44W
  15. HYDROPAC 283/21 · Icebergs2021-01-21 → 2021-01-22
    Icebergs reported in: a. A64, 60-59S 069-44W
  16. HYDROPAC 266/21 · Icebergs2021-01-20 → 2021-01-21
    Icebergs reported in: a. A64, 60-59S 069-44W
  17. HYDROPAC 255/21 · Icebergs2021-01-19 → 2021-01-20
    Icebergs reported in: a. A64, 60-59S 069-44W
  18. HYDROPAC 238/21 · Icebergs2021-01-18 → 2021-01-19
    Icebergs reported in: a. A64, 60-59S 069-44W
  19. HYDROPAC 216/21 · Icebergs2021-01-17 → 2021-01-18
    Icebergs reported in: a. A64, 60-59S 069-44W
  20. HYDROPAC 207/21 · Icebergs2021-01-16 → 2021-01-17
    Icebergs reported in: a. A64, 60-59S 069-44W

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