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 682/19 · Icebergs2019-03-02 → 2019-03-03
    Icebergs reported in: a. B15T, 54-15S 026-34W
  2. HYDROLANT 677/19 · Icebergs2019-03-01 → 2019-03-02
    Icebergs reported in: a. B15T, 54-29S 026-17W
  3. HYDROLANT 676/19 · Icebergs2019-03-01 → 2019-03-02
    Icebergs reported in: a. B09F, 59-45S 051-50W
  4. HYDROLANT 661/19 · Icebergs2019-02-28 → 2019-02-27
    Icebergs reported in: a. B15T, 54-29S 026-17W
  5. HYDROLANT 645/19 · Icebergs2019-02-27 → 2019-02-28
    Icebergs reported in: a. B15T, 54-49S 026-25W
  6. HYDROLANT 643/19 · Icebergs2019-02-27 → 2019-02-28
    Icebergs reported in: a. B09F, 59-45S 051-50W
  7. HYDROLANT 625/19 · Icebergs2019-02-26 → 2019-02-27
    Icebergs reported in: a. B09F, 59-45S 051-50W
  8. HYDROLANT 624/19 · Icebergs2019-02-26 → 2019-02-27
    Icebergs reported in: a. B15T, 54-49S 026-25W
  9. HYDROLANT 610/19 · Icebergs2019-02-25 → 2019-02-26
    Icebergs reported in: a. B15T, 54-48S 026-36W
  10. HYDROLANT 608/19 · Icebergs2019-02-25 → 2019-02-26
    Icebergs reported in: a. B09F, 59-45S 051-50W
  11. HYDROLANT 600/19 · Icebergs2019-02-24 → 2019-02-25
    Icebergs reported in: a. B15T, 54-37S 027-09W
  12. HYDROLANT 595/19 · Icebergs2019-02-23 → 2019-02-24
    Icebergs reported in: a. B15T, 54-25S 027-41W
  13. HYDROLANT 588/19 · Icebergs2019-02-22 → 2019-02-23
    Icebergs reported in: a. B15T, 54-09S 027-57W
  14. HYDROLANT 581/19 · Icebergs2019-02-22 → 2019-02-23
    Icebergs reported in: a. B15T, 54-03S 027-54W
  15. HYDROLANT 560/19 · Icebergs2019-02-20 → 2019-02-21
    Icebergs reported in: a. B15T, 53-56S 027-35W
  16. HYDROLANT 548/19 · Icebergs2019-02-19 → 2019-02-20
    Icebergs reported in: a. B15T, 53-50S 027-10W
  17. HYDROLANT 528/19 · Icebergs2019-02-18 → 2019-02-19
    Icebergs reported in: a. B15T, 53-45S 026-44W
  18. HYDROLANT 527/19 · Icebergs2019-02-18 → 2019-02-19
    Icebergs reported in: a. B09F, 59-59S 051-47W
  19. HYDROLANT 513/19 · Icebergs2019-02-17 → 2019-02-18
    Icebergs reported in: a. B09F, 59-59S 051-47W
  20. HYDROLANT 512/19 · Icebergs2019-02-17 → 2019-02-18
    Icebergs reported in: a. B15T, 53-40S 026-16W

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