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 708/22 · Icebergs2022-03-10 → 2022-03-11
    Icebergs reported in: a. A64, 67-19S 060-11W
  2. HYDROLANT 706/22 · Icebergs2022-03-10 → 2022-03-11
    Icebergs reported in: a. B09I, 54-58S 028-50W
  3. HYDROLANT 699/22 · Icebergs2022-03-09 → 2022-03-10
    Icebergs reported in: a. A64, 67-19S 060-11W
  4. HYDROLANT 689/22 · Icebergs2022-03-08 → 2022-03-09
    Icebergs reported in: a. A64, 67-19S 060-11W
  5. HYDROLANT 683/22 · Icebergs2022-03-07 → 2022-03-08
    Icebergs reported in: a. A64, 67-19S 060-11W
  6. HYDROLANT 668/22 · Icebergs2022-03-06 → 2022-03-07
    Icebergs reported in: a. A64, 67-19S 060-11W
  7. HYDROLANT 661/22 · Icebergs2022-03-05 → 2022-03-06
    Icebergs reported in: a. A64, 67-19S 060-11W
  8. HYDROLANT 655/22 · Icebergs2022-03-04 → 2022-03-05
    Icebergs reported in: a. A64, 67-19S 060-11W
  9. HYDROLANT 641/22 · Icebergs2022-03-03 → 2022-03-04
    Icebergs reported in: a. A64, 67-19S 060-11W
  10. HYDROLANT 625/22 · Icebergs2022-03-02 → 2022-03-03
    Icebergs reported in: a. A64, 67-19S 060-11W
  11. HYDROLANT 616/22 · Icebergs2022-03-01 → 2022-03-02
    Icebergs reported in: a. A64, 67-19S 060-11W
  12. HYDROLANT 598/22 · Icebergs2022-02-28 → 2022-03-01
    Icebergs reported in: a. A64, 67-19S 060-11W
  13. HYDROLANT 587/22 · Icebergs2022-02-27 → 2022-02-28
    Icebergs reported in: a. A64, 67-19S 060-11W
  14. HYDROLANT 581/22 · Icebergs2022-02-26 → 2022-02-27
    Icebergs reported in: a. A64, 67-16S 059-49W
  15. HYDROLANT 569/22 · Icebergs2022-02-25 → 2022-02-26
    Icebergs reported in: a. A64, 67-16S 059-49W
  16. HYDROLANT 553/22 · Icebergs2022-02-24 → 2022-02-25
    Icebergs reported in: a. A64, 67-17S 059-43W
  17. HYDROLANT 542/22 · Icebergs2022-02-23 → 2022-02-24
    Icebergs reported in: a. A64, 67-17S 059-43W
  18. HYDROLANT 534/22 · Icebergs2022-02-22 → 2022-02-23
    Icebergs reported in: a. A64, 67-17S 059-43W
  19. HYDROLANT 516/22 · Icebergs2022-02-21 → 2022-02-22
    Icebergs reported in: a. A64, 67-17S 059-43W
  20. HYDROLANT 496/22 · Icebergs2022-02-20 → 2022-02-21
    Icebergs reported in: a. A64, 67-17S 059-43W

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