Southern Ocean

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

in force
3
last 12 months
3
since 1999
3,131
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%
Missiles381%
Nav aids241%
Other181%
Wrecks120%
Derelicts40%
Exercises20%
Containers10%

Archive · 3,128 cancelled

  1. HYDROLANT 490/22 · Icebergs2022-02-19 → 2022-02-20
    Icebergs reported in: a. A64, 67-17S 059-43W
  2. HYDROLANT 476/22 · Icebergs2022-02-18 → 2022-02-19
    Icebergs reported in: a. A64, 67-17S 059-43W
  3. HYDROLANT 467/22 · Icebergs2022-02-17 → 2022-02-18
    Icebergs reported in: a. A64, 67-17S 059-43W
  4. HYDROLANT 463/22 · Icebergs2022-02-16 → 2022-02-17
    Icebergs reported in: a. A64, 67-17S 059-43W
  5. HYDROLANT 452/22 · Icebergs2022-02-15 → 2022-02-16
    Icebergs reported in: a. A64, 67-17S 059-43W
  6. HYDROLANT 443/22 · Icebergs2022-02-14 → 2022-02-15
    Icebergs reported in: a. A64, 67-17S 059-59W
  7. HYDROLANT 437/22 · Icebergs2022-02-13 → 2022-02-14
    Icebergs reported in: a. A64, 67-17S 059-59W
  8. HYDROLANT 431/22 · Icebergs2022-02-12 → 2022-02-13
    Icebergs reported in: a. A64, 67-17S 059-59W
  9. HYDROLANT 423/22 · Icebergs2022-02-11 → 2022-02-12
    Icebergs reported in: a. A64, 67-17S 059-59W
  10. HYDROLANT 417/22 · Other2022-02-11 → 2023-11-26
    Least depth 4.6 meters reported in area bound by 60-12.3S 045-42.2W, 60-12.3S 045-41.4W, 60-43.4S 045-41.4W,…
  11. HYDROLANT 416/22 · Icebergs2022-02-10 → 2022-02-11
    Icebergs reported in: a. B09I, 56-24S 030-05W
  12. HYDROLANT 414/22 · Icebergs2022-02-10 → 2022-02-11
    Icebergs reported in: a. A64, 67-17S 059-59W
  13. HYDROLANT 400/22 · Icebergs2022-02-09 → 2022-02-10
    Icebergs reported in: a. A64, 67-17S 059-59W
  14. HYDROLANT 386/22 · Icebergs2022-02-08 → 2022-02-09
    Icebergs reported in: a. A64, 67-17S 059-59W
  15. HYDROLANT 377/22 · Icebergs2022-02-07 → 2022-02-08
    Icebergs reported in: a. A64, 67-17S 059-59W
  16. HYDROLANT 373/22 · Icebergs2022-02-06 → 2022-02-07
    Icebergs reported in: a. A64, 67-17S 059-59W
  17. HYDROLANT 369/22 · Icebergs2022-02-05 → 2022-02-06
    Icebergs reported in: a. B09I, 56-44S 029-20W
  18. HYDROLANT 368/22 · Icebergs2022-02-05 → 2022-02-06
    Icebergs reported in: a. A64, 67-13S 059-40W
  19. HYDROLANT 358/22 · Icebergs2022-02-04 → 2022-02-05
    Icebergs reported in: a. A64, 67-13S 059-40W
  20. HYDROLANT 356/22 · Icebergs2022-02-04 → 2022-02-05
    Icebergs reported in: a. B09I, 56-48S 029-24W

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