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 1946/99 · Icebergs1999-09-14 → 1999-09-21
    Large icebergs reported on 03 sep vicinity: a. 60-55S 048-36W
  2. HYDROPAC 904/99 · Icebergs1999-09-08 → 1999-09-14
    Large icebergs reported on 03 sep vicinity: a. 60-33S 048-21W
  3. HYDROLANT 1917/99 · Icebergs1999-09-08 → 1999-09-14
    Large icebergs reported on 03 sep vicinity: a. 60-33S 048-21W
  4. HYDROPAC 867/99 · Icebergs1999-08-30 → 1999-09-06
    Large icebergs reported on 20 aug vicinity: a. 61-06S 048-42W
  5. HYDROLANT 1834/99 · Icebergs1999-08-30 → 1999-09-06
    Large icebergs reported on 20 aug vicinity: a. 61-06S 048-42W
  6. HYDROPAC 824/99 · Icebergs1999-08-20 → 1999-08-27
    Large icebergs reported on 13 aug vicinity: a. 61-06S 048-42W
  7. HYDROLANT 1750/99 · Icebergs1999-08-20 → 1999-08-27
    Large icebergs reported on 13 aug vicinity: a. 61-06S 048-42W
  8. HYDROPAC 780/99 · Icebergs1999-08-11 → 1999-08-18
    Large icebergs reported on 06 aug vicinity: a. 61-07S 048-54W
  9. HYDROLANT 1681/99 · Icebergs1999-08-11 → 1999-08-18
    Large icebergs reported on 06 aug vicinity: a. 61-07S 048-54W
  10. HYDROPAC 764/99 · Icebergs1999-08-10 → 1999-08-11
    Large icebergs reported on 06 aug vicinity: a. 58-30S 057-00W
  11. HYDROLANT 1666/99 · Icebergs1999-08-10 → 1999-08-11
    Large icebergs reported on 06 aug vicinity: a. 58-30S 057-00W
  12. HYDROPAC 689/99 · Icebergs1999-07-26 → 1999-08-02
    Large icebergs reported on 23 jul vicinity: a. 61-15S 058-59W
  13. HYDROLANT 1537/99 · Icebergs1999-07-26 → 1999-08-02
    Large icebergs reported on 23 jul vicinity: a. 61-15S 058-59W
  14. HYDROPAC 678/99 · Icebergs1999-07-24 → 1999-07-25
    Large icebergs reported on 23 jul vicinity: a. 61-15S 058-59W
  15. HYDROLANT 1527/99 · Icebergs1999-07-24 → 1999-07-25
    Large icebergs reported on 23 jul vicinity: a. 61-15S 058-59W
  16. HYDROPAC 635/99 · Icebergs1999-07-13 → 1999-07-20
    Large icebergs reported on 12 jul vicinity: a. 61-15S 058-59W
  17. HYDROLANT 1447/99 · Icebergs1999-07-13 → 1999-07-20
    Large icebergs reported on 12 jul vicinity: a. 61-15S 058-59W
  18. HYDROPAC 609/99 · Icebergs1999-07-06 → 1999-07-13
    Large icebergs reported on 04 jul vicinity: a. 61-15S 058-59W
  19. HYDROLANT 1392/99 · Icebergs1999-07-06 → 1999-07-13
    Large icebergs reported on 04 jul vicinity: a. 61-15S 058-59W
  20. HYDROPAC 606/99 · Icebergs1999-07-05 → 1999-07-06
    Large icebergs reported on 04 jul vicinity: a. 61-15S 058-59W

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