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 1304/17 · Icebergs2017-04-24 → 2017-04-25
    Icebergs reported in: a. A61, 63-06S 030-21W
  2. HYDROLANT 1286/17 · Icebergs2017-04-23 → 2017-04-23
    Icebergs reported in: a. A61, 63-07S 030-24W
  3. HYDROLANT 1279/17 · Icebergs2017-04-22 → 2017-04-23
    Icebergs reported in: a. A61, 63-08S 030-26W
  4. HYDROLANT 1270/17 · Icebergs2017-04-21 → 2017-04-22
    Icebergs reported in: a. A61, 63-10S 030-25W
  5. HYDROLANT 1259/17 · Icebergs2017-04-20 → 2017-04-21
    Icebergs reported in: a. A61, 63-12S 030-26W
  6. HYDROLANT 1251/17 · Icebergs2017-04-19 → 2017-04-20
    Icebergs reported in: a. A61, 63-17S 030-34W
  7. HYDROLANT 1239/17 · Icebergs2017-04-18 → 2017-04-19
    Icebergs reported in: a. A61, 63-17S 030-34W
  8. HYDROLANT 1228/17 · Icebergs2017-04-17 → 2017-04-18
    Icebergs reported in: a. A61, 63-18S 030-55W
  9. HYDROLANT 1227/17 · Wrecks2017-04-17 → 2017-06-10
    14.6 meter shoal reported in vicinity 63-23.87S 057-01.93W
  10. HYDROLANT 1219/17 · Icebergs2017-04-16 → 2017-04-17
    Icebergs reported in: a. A61, 63-18S 030-55W
  11. HYDROPAC 1337/17 · Icebergs2017-04-16 → 2017-04-19
    Icebergs reported at 161440Z apr in: a. B30, 73-44S 154-51W
  12. HYDROLANT 1209/17 · Icebergs2017-04-15 → 2017-04-16
    Icebergs reported in: a. A61, 63-18S 030-55W
  13. HYDROLANT 1195/17 · Icebergs2017-04-14 → 2017-04-15
    Icebergs reported in: a. A61, 63-09S 030-40W
  14. HYDROLANT 1184/17 · Icebergs2017-04-13 → 2017-04-14
    Icebergs reported in: a. A61, 63-09S 030-40W
  15. HYDROLANT 1172/17 · Icebergs2017-04-12 → 2017-04-13
    Icebergs reported in: a. A61, 63-07S 030-38W
  16. HYDROLANT 1160/17 · Icebergs2017-04-11 → 2017-04-12
    Icebergs reported in: a. A61, 63-07S 030-37W
  17. HYDROLANT 1155/17 · Icebergs2017-04-10 → 2017-04-11
    Icebergs reported in: a. A61, 63-07S 030-35W
  18. HYDROLANT 1145/17 · Icebergs2017-04-09 → 2017-04-10
    Icebergs reported in: a. A61, 63-12S 030-39W
  19. HYDROLANT 1139/17 · Icebergs2017-04-08 → 2017-04-09
    Icebergs reported in: a. A61, 63-11S 030-39W
  20. HYDROLANT 1129/17 · Icebergs2017-04-07 → 2017-04-08
    Icebergs reported in: a. A61, 63-16S 030-46W

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