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 507/19 · Icebergs2019-02-16 → 2019-02-17
    Icebergs reported in: a. B15T, 53-39S 026-16W
  2. HYDROLANT 506/19 · Icebergs2019-02-16 → 2019-02-17
    Icebergs reported in: a. B09F, 59-59S 051-47W
  3. HYDROLANT 499/19 · Icebergs2019-02-15 → 2019-02-16
    Icebergs reported in: a. B15T, 53-38S 02-07W
  4. HYDROLANT 497/19 · Icebergs2019-02-15 → 2019-02-16
    Icebergs reported in: a. B09F, 59-59S 051-47W
  5. HYDROLANT 484/19 · Icebergs2019-02-14 → 2019-02-15
    Icebergs reported in: a. B15T, 53-39S 025-57W
  6. HYDROLANT 479/19 · Icebergs2019-02-14 → 2019-02-15
    Icebergs reported in: a. B09F, 59-59S 051-47W
  7. HYDROLANT 473/19 · Icebergs2019-02-13 → 2019-02-14
    Icebergs reported in: a. B15T, 53-40S 025-51W
  8. HYDROLANT 467/19 · Icebergs2019-02-12 → 2019-02-13
    Icebergs reported in: a. B09F, 59-59S 051-47W
  9. HYDROLANT 466/19 · Icebergs2019-02-12 → 2019-02-13
    Icebergs reported in: a. B15T, 54-43S 025-48W
  10. HYDROLANT 454/19 · Icebergs2019-02-11 → 2019-02-12
    Icebergs reported in: a. B09F, 59-59S 051-47W
  11. HYDROLANT 449/19 · Icebergs2019-02-10 → 2019-02-11
    Icebergs reported in: a. B09F, 59-59S 051-47W
  12. HYDROLANT 442/19 · Icebergs2019-02-09 → 2019-02-10
    Icebergs reported in: a. B09F, 60-05S 053-04W
  13. HYDROLANT 431/19 · Icebergs2019-02-08 → 2019-02-09
    Icebergs reported in: a. A68B, 65-58S 058-52W
  14. HYDROLANT 421/19 · Icebergs2019-02-07 → 2019-02-08
    Icebergs reported in: a. B09F, 60-05S 053-04W
  15. HYDROLANT 402/19 · Icebergs2019-02-06 → 2019-02-07
    Icebergs reported in: a. B09F, 60-05S 053-04W
  16. HYDROLANT 382/19 · Icebergs2019-02-05 → 2019-02-06
    Icebergs reported in: a. B09F, 60-05S 053-04W
  17. HYDROLANT 370/19 · Icebergs2019-02-04 → 2019-02-05
    Icebergs reported in: a. B09F, 60-05S 053-04W
  18. HYDROLANT 353/19 · Icebergs2019-02-03 → 2019-02-04
    Icebergs reported in: a. B09F, 60-05S 053-04W
  19. HYDROLANT 348/19 · Icebergs2019-02-02 → 2019-02-03
    Icebergs reported in: a. B09F, 60-05S 053-04W
  20. HYDROLANT 336/19 · Icebergs2019-02-01 → 2019-02-02
    Icebergs reported in: a. B09F, 60-50S 055-05W

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