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 792/21 · Icebergs2021-03-20 → 2021-03-21
    Icebergs reported in: a. A63, 69-45S 056-50W
  2. HYDROLANT 781/21 · Icebergs2021-03-19 → 2021-03-20
    Icebergs reported in: a. A63, 70-13.8S 056-22.2W
  3. HYDROLANT 772/21 · Icebergs2021-03-18 → 2021-03-19
    Icebergs reported in: a. A63, 70-13.8S 056-22.2W
  4. HYDROLANT 761/21 · Icebergs2021-03-17 → 2021-03-18
    Icebergs reported in: a. A63, 70-13.8S 056-22.2W
  5. HYDROLANT 747/21 · Icebergs2021-03-16 → 2021-03-17
    Icebergs reported in: a. 70-13.8S 056-22.2W
  6. HYDROLANT 725/21 · Icebergs2021-03-14 → 2021-03-15
    Icebergs reported in: a. A63, 71-40.2S 054-54.0W
  7. HYDROLANT 717/21 · Icebergs2021-03-13 → 2021-03-14
    Icebergs reported in: a. A63, 71-40.2S 054-54.0W
  8. HYDROLANT 710/21 · Icebergs2021-03-12 → 2021-03-13
    Icebergs reported in: a. A63, 71-40.2S 054-54.0W
  9. HYDROLANT 700/21 · Icebergs2021-03-11 → 2021-03-12
    Icebergs reported in: a. 70-40.2S 054-54.0W
  10. HYDROLANT 695/21 · Icebergs2021-03-10 → 2021-03-11
    Icebergs reported in: a. 70-40.2S 054-54.0W
  11. HYDROLANT 682/21 · Icebergs2021-03-09 → 2021-03-10
    Icebergs reported in: a. A63, 71-40S 054-54W
  12. HYDROLANT 675/21 · Icebergs2021-03-08 → 2021-03-09
    Icebergs reported in: a. A63, 71-40S 054-54W
  13. HYDROLANT 671/21 · Icebergs2021-03-07 → 2021-03-08
    Icebergs reported in: a. A63, 71-40S 054-54W
  14. HYDROLANT 662/21 · Icebergs2021-03-06 → 2021-03-07
    Icebergs reported in: a. A63, 71-40S 054-54W
  15. HYDROLANT 651/21 · Icebergs2021-03-05 → 2021-03-06
    Icebergs reported in: a. A63, 71-40S 054-54W
  16. HYDROLANT 630/21 · Icebergs2021-03-04 → 2021-03-05
    Icebergs reported in: a. A63, 71-40S 054-54W
  17. HYDROLANT 617/21 · Icebergs2021-03-03 → 2021-03-04
    Icebergs reported in: a. A63, 71-40S 054-54W
  18. HYDROLANT 608/21 · Icebergs2021-03-02 → 2021-03-03
    Icebergs reported in: a. A63, 71-40S 054-54W
  19. HYDROLANT 604/21 · Icebergs2021-03-01 → 2021-03-02
    Icebergs reported in: a. A63, 71-40S 054-54W
  20. HYDROLANT 594/21 · Icebergs2021-02-28 → 2021-03-01
    Icebergs reported in: a. A63, 71-40S 054-54W

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