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 217/23 · Icebergs2023-01-26 → 2023-01-27
    Icebergs reported in: a. A23A, 72-04.80S 047-11.40W
  2. HYDROLANT 214/23 · Icebergs2023-01-25 → 2023-01-26
    Icebergs reported in: a. A23A, 72-04.80S 047-11.40W
  3. HYDROLANT 195/23 · Icebergs2023-01-24 → 2023-01-25
    Icebergs reported in: a. A23A, 72-04.80S 047-11.40W
  4. HYDROLANT 187/23 · Icebergs2023-01-23 → 2023-01-24
    Icebergs reported in: a. A70, 65-10.80S 060-11.40W
  5. HYDROLANT 179/23 · Icebergs2023-01-22 → 2023-01-23
    Icebergs reported in: a. A23A, 72-04.80S 047-11.40W
  6. HYDROLANT 174/23 · Icebergs2023-01-21 → 2023-01-22
    Icebergs reported in: a. A23A, 72-15.00S 046-37.20W
  7. HYDROLANT 167/23 · Icebergs2023-01-20 → 2023-01-21
    Icebergs reported in: a. A23A, 72-15.00S 046-37.20W
  8. HYDROLANT 155/23 · Icebergs2023-01-19 → 2023-01-20
    Icebergs reported in: a. A23A, 72-15.00S 046-37.20W
  9. HYDROLANT 145/23 · Icebergs2023-01-18 → 2023-01-19
    Icebergs reported in: a. A23A, 72-15.00S 046-37.20W
  10. HYDROLANT 138/23 · Icebergs2023-01-17 → 2023-01-18
    Icebergs reported in: a. A23A, 72-15.00S 046-37.20W
  11. HYDROLANT 133/23 · Icebergs2023-01-16 → 2023-01-17
    Icebergs reported in: a. A23A, 72-15.00S 046-37.20W
  12. HYDROLANT 127/23 · Icebergs2023-01-15 → 2023-01-16
    Icebergs reported in: a. A23A, 72-15.00S 046-37.20W
  13. HYDROLANT 121/23 · Icebergs2023-01-14 → 2023-01-15
    Icebergs reported in: a. A23A, 72-15.00S 046-37.20W
  14. HYDROLANT 112/23 · Icebergs2023-01-13 → 2023-01-14
    Icebergs reported in: a. A23A, 72-15.00S 046-37.20W
  15. HYDROLANT 103/23 · Icebergs2023-01-12 → 2023-01-13
    Icebergs reported in: a. A23A, 72-15.00S 046-37.20W
  16. HYDROLANT 97/23 · Icebergs2023-01-11 → 2023-01-12
    Icebergs reported in: a. A23A, 72-15.00S 046-37.20W
  17. HYDROLANT 89/23 · Icebergs2023-01-10 → 2023-01-11
    Icebergs reported in: a. A23A, 72-15.00S 046-37.20W
  18. HYDROLANT 87/23 · Icebergs2023-01-10 → 2023-01-10
    Icebergs reported in: a. 72-15.00S 046-37.20W
  19. HYDROLANT 74/23 · Icebergs2023-01-09 → 2023-01-10
    Icebergs reported in: a. A23A, 72-15.00S 046-37.20W
  20. HYDROLANT 66/23 · Icebergs2023-01-08 → 2023-01-09
    Icebergs reported in: a. A23A, 72-15.00S 046-37.00W

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