Southern Ocean

IHO sea area 67 · -180° to 180° E, -86° to -60° N

in force
3
last 12 months
3
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

Icebergs2,99095%
Surveys421%
Missiles391%
Nav aids241%
Other181%
Wrecks120%
Derelicts40%
Exercises20%
Containers10%

Archive · 3,129 cancelled

  1. HYDROLANT 984/24 · Icebergs2024-05-10 → 2024-05-11
    Icebergs reported in: a. A74A, 70-17.40S 056-33.00W
  2. HYDROLANT 976/24 · Icebergs2024-05-09 → 2024-05-10
    Icebergs reported in: a. A74A, 70-17.40S 056-33.00W
  3. HYDROLANT 972/24 · Icebergs2024-05-08 → 2024-05-09
    Icebergs reported in: a. A74A, 70-17.40S 056-33.00W
  4. HYDROLANT 966/24 · Icebergs2024-05-07 → 2024-05-08
    Icebergs reported in: a. A74A, 70-17.40S 056-33.00W
  5. HYDROLANT 960/24 · Icebergs2024-05-06 → 2024-05-07
    Icebergs reported in: a. A74A, 70-17.40S 056-33.00W
  6. HYDROLANT 955/24 · Icebergs2024-05-05 → 2024-05-06
    Icebergs reported in: a. A74A, 70-17.40S 056-33.00W
  7. HYDROLANT 952/24 · Icebergs2024-05-04 → 2024-05-05
    1, icebergs reported in: a. A23A, 59-04.80S 044-45.60W
  8. HYDROLANT 944/24 · Icebergs2024-05-03 → 2024-05-04
    Icebergs reported in: a. A23A, 59-04.80S 044-45.60W
  9. HYDROLANT 940/24 · Icebergs2024-05-02 → 2024-05-03
    Icebergs reported in: a. A23A, 59-04.80S 044-45.60W
  10. HYDROLANT 930/24 · Icebergs2024-05-01 → 2024-05-02
    Icebergs reported in: a. A23A, 59-18.60S 044-46.20W
  11. HYDROLANT 920/24 · Icebergs2024-04-30 → 2024-05-01
    Icebergs reported in: a. A23A, 59-04.80S 044-45.60W
  12. HYDROLANT 912/24 · Icebergs2024-04-29 → 2024-04-30
    Icebergs reported in: a. A23A, 59-18.60S 044-46.20W
  13. HYDROLANT 906/24 · Icebergs2024-04-28 → 2024-04-29
    Icebergs reported in: a. A23A, 59-18.60S 044-46.20W
  14. HYDROLANT 900/24 · Icebergs2024-04-27 → 2024-04-28
    Icebergs reported in: a. A23A, 59-18.60S 044-46.20W
  15. HYDROLANT 889/24 · Icebergs2024-04-26 → 2024-04-27
    Icebergs reported in: a. A23A, 59-18.60S 044-46.20W
  16. HYDROLANT 880/24 · Icebergs2024-04-25 → 2024-04-26
    Icebergs reported in: a. A23A, 59-18.60S 044-46.20W
  17. HYDROLANT 875/24 · Icebergs2024-04-24 → 2024-04-25
    Icebergs reported in: a. A23A, 59-18.60S 044-46.20W
  18. HYDROLANT 863/24 · Icebergs2024-04-23 → 2024-04-24
    Icebergs reported in: a. A23A, 59-18.60S 044-46.20W
  19. HYDROLANT 856/24 · Icebergs2024-04-22 → 2024-04-22
    Icebergs reported in: a. A23A, 59-18.60S 044-46.20W
  20. HYDROLANT 849/24 · Icebergs2024-04-21 → 2024-04-22
    Icebergs reported in: a. A23A, 59-18.60S 044-46.20W

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