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. HYDROPAC 911/06 · Icebergs2006-05-17 → 2006-05-24
    Icebergs sighted on 16 may: a. A-22A, 61-13S 052-42W
  2. HYDROLANT 944/06 · Icebergs2006-05-17 → 2006-05-24
    Icebergs sighted on 16 may: a. A-22A, 61-13S 052-42W
  3. HYDROPAC 901/06 · Icebergs2006-05-16 → 2006-05-17
    Icebergs sighted on 15 may: a. A-22, 61-13S 052-42W
  4. HYDROLANT 935/06 · Icebergs2006-05-16 → 2006-05-17
    Icebergs sighted on 15 may: a. A-22, 61-13S 052-42W
  5. HYDROPAC 426/06 · Nav aids2006-03-14 → 2008-02-10
    RACON at nelson island light 62-18.4S 059-12.8W inoperative
  6. HYDROPAC 423/06 · Icebergs2006-03-14 → 2006-03-20
    Icebergs reported: a. A-22A, 63-22S 051-37W
  7. HYDROLANT 506/06 · Icebergs2006-03-14 → 2006-03-20
    Icebergs reported: a. A-22A, 63-22S 051-37W
  8. HYDROPAC 350/06 · Icebergs2006-03-03 → 2006-03-10
    Icebergs reported in: a. 63-31S 051-54W
  9. HYDROLANT 439/06 · Icebergs2006-03-03 → 2006-03-10
    Icebergs reported in: a. 63-31S 051-54W
  10. HYDROLANT 392/06 · Icebergs2006-02-24 → 2006-03-03
    Icebergs reported in: a. 63-31S 051-54W
  11. HYDROPAC 302/06 · Icebergs2006-02-24 → 2006-03-03
    Icebergs reported in: a. 63-31S 051-54W
  12. HYDROPAC 119/06 · Icebergs2006-01-24 → 2006-01-30
    Icebergs reported in: a. 63-58S 055-51W
  13. HYDROLANT 152/06 · Icebergs2006-01-24 → 2006-01-30
    Icebergs reported in: a. 63-58S 055-51W
  14. HYDROPAC 91/06 · Icebergs2006-01-17 → 2006-01-24
    Large icebergs reported on 16 jan vicinity: a. a 22 a, 64-00S 053-13W
  15. HYDROLANT 106/06 · Icebergs2006-01-17 → 2006-01-24
    Large icebergs reported on 16 jan vicinity: a. a 22 a, 64-00S 053-13W
  16. HYDROPAC 51/06 · Icebergs2006-01-10 → 2006-01-16
    Icebergs reported vicinity: a. 64-00S 053-37W
  17. HYDROLANT 55/06 · Icebergs2006-01-10 → 2006-01-16
    Icebergs reported vicinity: a. 64-00S 053-37W
  18. HYDROPAC 7/06 · Icebergs2006-01-03 → 2006-01-09
    Very large icebergs reported on 02 jan: a. A-22A, in 64-06S 057-37W
  19. HYDROLANT 11/06 · Icebergs2006-01-03 → 2006-01-09
    Very large icebergs reported on 02 jan: a. A-22A, in 64-06S 057-37W
  20. HYDROPAC 2004/05 · Nav aids2005-11-29 → 2006-01-10
    RACON at montravel rocks light 63-08S 058-03W inoperative

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