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 2599/20 · Icebergs2020-08-22 → 2020-08-23
    Icebergs reported in: a. A64, 69-44S 060-59W
  2. HYDROLANT 2589/20 · Icebergs2020-08-21 → 2020-08-22
    Icebergs reported in: a. A64, 69-44S 060-59W
  3. HYDROLANT 2583/20 · Icebergs2020-08-20 → 2020-08-21
    Icebergs reported in: a. A64, 69-44S 060-59W
  4. HYDROLANT 2570/20 · Icebergs2020-08-19 → 2020-08-20
    Icebergs reported in: a. A64, 69-44S 060-59W
  5. HYDROLANT 2556/20 · Icebergs2020-08-18 → 2020-08-19
    Icebergs reported in: a. A64, 69-44S 060-59W
  6. HYDROLANT 2545/20 · Icebergs2020-08-17 → 2020-08-18
    Icebergs reported in: a. A64, 69-44S 060-59W
  7. HYDROLANT 2539/20 · Icebergs2020-08-16 → 2020-08-17
    Icebergs reported in: a. A64, 69-44S 060-59W
  8. HYDROLANT 2534/20 · Icebergs2020-08-15 → 2020-08-16
    Icebergs reported in: a. A64, 69-44S 060-59W
  9. HYDROLANT 2524/20 · Icebergs2020-08-14 → 2020-08-15
    Icebergs reported in: a. A64, 69-44S 060-59W
  10. HYDROLANT 2509/20 · Icebergs2020-08-13 → 2020-08-14
    Icebergs reported in: a. A64, 69-44S 060-59W
  11. HYDROLANT 2500/20 · Icebergs2020-08-12 → 2020-08-13
    Icebergs reported in: a. A64, 69-44S 060-59W
  12. HYDROLANT 2488/20 · Icebergs2020-08-11 → 2020-08-12
    Icebergs reported in: a. A64, 69-44S 060-59W
  13. HYDROLANT 2479/20 · Icebergs2020-08-10 → 2020-08-11
    Icebergs reported in: a. A64, 69-44S 060-59W
  14. HYDROLANT 2470/20 · Icebergs2020-08-09 → 2020-08-10
    Icebergs reported in: a. A64, 69-44S 060-59W
  15. HYDROLANT 2465/20 · Icebergs2020-08-08 → 2020-08-09
    Icebergs reported in: a. A64, 69-44S 060-59W
  16. HYDROLANT 2454/20 · Icebergs2020-08-07 → 2020-08-08
    Icebergs reported in: a. A64, 69-44S 060-59W
  17. HYDROLANT 2440/20 · Icebergs2020-08-06 → 2020-08-07
    Icebergs reported in: a. A64, 69-44S 060-59W
  18. HYDROLANT 2435/20 · Icebergs2020-08-05 → 2020-08-06
    Icebergs reported in: a. A64, 69-44S 060-59W
  19. HYDROLANT 2427/20 · Icebergs2020-08-04 → 2020-08-05
    Icebergs reported in: a. A64, 69-44S 060-59W
  20. HYDROLANT 2420/20 · Icebergs2020-08-03 → 2020-08-04
    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.