Southern Ocean

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

in force
3
last 12 months
4
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

Icebergs2,99195%
Surveys421%
Missiles381%
Nav aids241%
Other181%
Wrecks120%
Derelicts40%
Exercises20%
Containers10%

Archive · 3,129 cancelled

  1. HYDROLANT 2653/21 · Icebergs2021-10-28 → 2021-10-29
    Icebergs reported in: a. 63-22S 050-58W
  2. HYDROLANT 2649/21 · Icebergs2021-10-27 → 2021-10-28
    Icebergs reported in: a. 63-24S 051-08W
  3. HYDROLANT 2648/21 · Icebergs2021-10-27 → 2021-10-28
    Icebergs reported in: a. A63, 63-38S 051-38W
  4. HYDROLANT 2640/21 · Icebergs2021-10-26 → 2021-10-27
    Icebergs reported in: a. A63, 63-38S 051-38W
  5. HYDROLANT 2639/21 · Icebergs2021-10-26 → 2021-10-27
    Icebergs reported in: a. 63-25S 051-09W
  6. HYDROLANT 2632/21 · Icebergs2021-10-25 → 2021-10-26
    Icebergs reported in: a. A63, 63-38S 051-38W
  7. HYDROLANT 2631/21 · Icebergs2021-10-25 → 2021-10-26
    Icebergs reported in: a. 63-25S 051-11W
  8. HYDROLANT 2624/21 · Icebergs2021-10-24 → 2021-10-25
    Icebergs reported in: a. 63-26S 051-12W
  9. HYDROLANT 2623/21 · Icebergs2021-10-24 → 2021-10-25
    Icebergs reported in: a. A63, 63-38S 051-38W
  10. HYDROLANT 2618/21 · Icebergs2021-10-23 → 2021-10-24
    Icebergs reported in: a. A63, 63-55S 052-35W
  11. HYDROLANT 2617/21 · Icebergs2021-10-23 → 2021-10-24
    Icebergs reported in: a. 63-23S 051-20W
  12. HYDROLANT 2610/21 · Icebergs2021-10-22 → 2021-10-23
    Icebergs reported in: a. A63, 63-55S 052-35W
  13. HYDROLANT 2609/21 · Icebergs2021-10-22 → 2021-10-23
    Icebergs reported in: A.63-27S 051-28W
  14. HYDROLANT 2602/21 · Icebergs2021-10-21 → 2021-10-22
    Icebergs reported in: A.63-27S 051-28W
  15. HYDROLANT 2600/21 · Icebergs2021-10-21 → 2021-10-22
    Icebergs reported in: a. A63, 63-55S 052-35W
  16. HYDROLANT 2595/21 · Icebergs2021-10-20 → 2021-10-21
    Icebergs reported in: a. 63-30S 051-31W
  17. HYDROLANT 2594/21 · Icebergs2021-10-20 → 2021-10-21
    Icebergs reported in: a. A63, 63-55S 052-35W
  18. HYDROLANT 2590/21 · Icebergs2021-10-20 → 2021-10-21
    Icebergs reported in: a. 63-34S 051-35W
  19. HYDROLANT 2581/21 · Icebergs2021-10-19 → 2021-10-20
    Icebergs reported in: a. 63-38S 051-37W
  20. HYDROLANT 2580/21 · Icebergs2021-10-19 → 2021-10-20
    Icebergs reported in: a. A63, 63-55S 052-35W

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