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 3474/19 · Icebergs2019-11-12 → 2019-11-13
    Icebergs reported in: a. A64, 69-44S 060-59W
  2. HYDROLANT 3459/19 · Icebergs2019-11-10 → 2019-11-11
    Icebergs reported in: a. A64, 69-44S 060-59W
  3. HYDROLANT 3456/19 · Icebergs2019-11-09 → 2019-11-10
    Icebergs reported in: a. A64, 69-44S 060-59W
  4. HYDROLANT 3448/19 · Icebergs2019-11-08 → 2019-11-09
    Icebergs reported in: a. A64, 69-44S 060-59W
  5. HYDROLANT 3435/19 · Icebergs2019-11-07 → 2019-11-08
    Icebergs reported in: a. A64, 69-44S 060-59W
  6. HYDROLANT 3409/19 · Icebergs2019-11-05 → 2019-11-06
    Icebergs reported in: a. A64, 69-44S 060-59W
  7. HYDROLANT 3396/19 · Icebergs2019-11-04 → 2019-11-05
    Icebergs reported in: a. A64, 69-44S 060-59W
  8. HYDROLANT 3380/19 · Icebergs2019-11-03 → 2019-11-04
    Icebergs reported in: a. A64, 69-44S 060-59W
  9. HYDROLANT 3376/19 · Icebergs2019-11-02 → 2019-11-03
    Icebergs reported in: a. A64, 69-44S 060-59W
  10. HYDROLANT 3332/19 · Icebergs2019-10-30 → 2019-10-31
    Icebergs reported in: a. A64, 69-44S 060-59W
  11. HYDROLANT 3323/19 · Icebergs2019-10-29 → 2019-10-30
    Icebergs reported in: a. A64, 69-44S 060-59W
  12. HYDROLANT 3305/19 · Icebergs2019-10-28 → 2019-10-29
    Icebergs reported in: a. A64, 69-44S 060-59W
  13. HYDROLANT 3288/19 · Icebergs2019-10-27 → 2019-10-28
    Icebergs reported in: a. A64, 69-44S 060-59W
  14. HYDROLANT 3282/19 · Icebergs2019-10-26 → 2019-10-27
    Icebergs reported in: a. A64, 69-44S 060-59W
  15. HYDROLANT 3278/19 · Icebergs2019-10-25 → 2019-10-26
    Icebergs reported in: a. A64, 69-44S 060-59W
  16. HYDROLANT 3260/19 · Icebergs2019-10-24 → 2019-10-25
    Icebergs reported in: a. A64, 69-44S 060-59W
  17. HYDROLANT 3252/19 · Icebergs2019-10-23 → 2019-10-24
    Icebergs reported in: a. A64, 69-44S 060-59W
  18. HYDROLANT 3213/19 · Icebergs2019-10-20 → 2019-10-21
    Icebergs reported in: a. A64, 69-44S 060-59W
  19. HYDROLANT 3205/19 · Icebergs2019-10-19 → 2019-10-20
    Icebergs reported in: a. A64, 69-44S 060-59W
  20. HYDROLANT 3177/19 · Icebergs2019-10-17 → 2019-10-18
    Icebergs reported in: a. A64, 69-44S 060-59W

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