Southern Ocean

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

in force
3
last 12 months
5
since 1999
3,133
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

Icebergs2,99295%
Surveys421%
Missiles381%
Nav aids241%
Other181%
Wrecks120%
Derelicts40%
Exercises20%
Containers10%

Archive · 3,130 cancelled

  1. HYDROLANT 3763/18 · Icebergs2018-12-02 → 2018-12-03
    Icebergs reported in: a. B09F, 61-45S 054-39W
  2. HYDROLANT 3753/18 · Icebergs2018-12-01 → 2018-12-02
    Icebergs reported in: a. B09F, 61-45S 054-39W
  3. HYDROLANT 3705/18 · Icebergs2018-11-28 → 2018-11-29
    Icebergs reported in: a. B09F, 61-36S 054-12W
  4. HYDROLANT 3688/18 · Icebergs2018-11-27 → 2018-11-28
    Icebergs reported in: a. B09F, 61-36S 054-12W
  5. HYDROLANT 3677/18 · Icebergs2018-11-26 → 2018-11-27
    Icebergs reported in: a. B09F, 61-40S 054-15W
  6. HYDROLANT 3664/18 · Icebergs2018-11-25 → 2018-11-26
    Icebergs reported in: a. B09F, 61-36S 054-12W
  7. HYDROLANT 3658/18 · Icebergs2018-11-24 → 2018-11-25
    Icebergs reported in: a. B09F, 61-36S 054-12W
  8. HYDROLANT 3648/18 · Icebergs2018-11-23 → 2018-11-24
    Icebergs reported in: a. B09F, 61-40S 054-15W
  9. HYDROLANT 3634/18 · Icebergs2018-11-22 → 2018-11-23
    Icebergs reported in: a. B09F, 61-40S 054-15W
  10. HYDROLANT 3621/18 · Icebergs2018-11-21 → 2018-11-22
    Icebergs reported in: a. B09F, 61-40S 054-12W
  11. HYDROLANT 3606/18 · Icebergs2018-11-20 → 2018-11-21
    Icebergs reported in: a. B09F, 61-36S 054-12W
  12. HYDROLANT 3589/18 · Icebergs2018-11-19 → 2018-11-20
    Icebergs reported in: a. B09F, 61-36S 054-12W
  13. HYDROLANT 3573/18 · Icebergs2018-11-17 → 2018-11-18
    Icebergs reported in: a. B09F, 61-36S 054-12W
  14. HYDROLANT 3560/18 · Icebergs2018-11-16 → 2018-11-17
    Icebergs reported in: a. B09F, 61-36S 054-12W
  15. HYDROLANT 3545/18 · Icebergs2018-11-15 → 2018-11-16
    Icebergs reported in: a. B09F, 61-47S 054-24W
  16. HYDROLANT 3531/18 · Icebergs2018-11-14 → 2018-11-15
    Icebergs reported in: a. B09F, 61-47S 054-24W
  17. HYDROLANT 3521/18 · Icebergs2018-11-13 → 2018-11-14
    Icebergs reported in: a. B09F, 61-36S 054-12W
  18. HYDROLANT 3512/18 · Icebergs2018-11-12 → 2018-11-13
    Icebergs reported in: a. B09F, 61-36S 054-12W
  19. HYDROLANT 3507/18 · Icebergs2018-11-11 → 2018-11-12
    Icebergs reported in: a. B09F, 61-47S 054-24W
  20. HYDROLANT 3498/18 · Icebergs2018-11-10 → 2018-11-11
    Icebergs reported in: a. B09F, 61-36S 054-12W

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