Southern Ocean

IHO sea area 67 · -180° to 180° E, -86° to -60° N

in force
3
last 12 months
3
since 1999
3,131
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

Icebergs2,99095%
Surveys421%
Missiles381%
Nav aids241%
Other181%
Wrecks120%
Derelicts40%
Exercises20%
Containers10%

Archive · 3,128 cancelled

  1. HYDROLANT 2600/23 · Icebergs2023-11-14 → 2023-11-15
    Icebergs reported in: a. A23A, 63-07.80S 051-40.20W
  2. HYDROLANT 2594/23 · Icebergs2023-11-13 → 2023-11-14
    Icebergs reported in: a. A23A, 63-07.80S 051-40.20W
  3. HYDROLANT 2587/23 · Icebergs2023-11-12 → 2023-11-13
    Icebergs reported in: a. A23A, 63-07.80S 051-40.20W
  4. HYDROLANT 2582/23 · Icebergs2023-11-11 → 2023-11-12
    Icebergs reported in: a. A23A, 63-07.80S 051-40.20W
  5. HYDROLANT 2576/23 · Icebergs2023-11-10 → 2023-11-11
    Iceberg reported in: a. A23A, 63-20.40S 051-40.80W
  6. HYDROLANT 2565/23 · Icebergs2023-11-09 → 2023-11-10
    Icebergs reported in: a. A23A, 63-20.40S 051-40.80W
  7. HYDROLANT 2557/23 · Wrecks2023-11-08 → 2023-11-26
    Significantly less water than charted reported in 61-40.26S 060-44.82W
  8. HYDROLANT 2556/23 · Icebergs2023-11-08 → 2023-11-09
    Icebergs reported in: a. A23A, 63-20.40S 051-40.80W
  9. HYDROLANT 2548/23 · Icebergs2023-11-07 → 2023-11-08
    Icebergs reported in: a. A23A, 63-20.40S 051-40.80W
  10. HYDROLANT 2535/23 · Icebergs2023-11-06 → 2023-11-07
    Icebergs reported in: a. A23A, 63-20.40S 051-40.80W
  11. HYDROLANT 2530/23 · Icebergs2023-11-05 → 2023-11-06
    Iceberg reported in: a. A23A, 63-20.40S 051-40.80W
  12. HYDROLANT 2525/23 · Icebergs2023-11-04 → 2023-11-05
    Iceberg reported in: a. A23A, 63-34.80S 051-48.60W
  13. HYDROLANT 2514/23 · Icebergs2023-11-03 → 2023-11-04
    Icebergs reported in: a. A23A, 63-34.80S 051-48.60W
  14. HYDROLANT 2503/23 · Icebergs2023-11-02 → 2023-11-03
    Icebergs reported in: a. D30A, 57-31.80S 047-14.40W
  15. HYDROLANT 2492/23 · Icebergs2023-11-01 → 2023-11-02
    Icebergs reported in: a. D30A, 57-31.80S 047-14.40W
  16. HYDROLANT 2481/23 · Icebergs2023-10-31 → 2023-11-01
    Icebergs reported in: a. D30A, 57-31.80S 047-14.40W
  17. HYDROLANT 2474/23 · Icebergs2023-10-30 → 2023-10-31
    Icebergs reported in: a. D30A, 57-31.80S 047-14.40W
  18. HYDROLANT 2458/23 · Icebergs2023-10-27 → 2023-10-28
    Icebergs reported in: a. A23A, 63-46.80S 052-18.00W
  19. HYDROLANT 2447/23 · Icebergs2023-10-26 → 2023-10-27
    Icebergs reported in: a. A23A, 63-46.80S 052-18.00W
  20. HYDROLANT 2437/23 · Icebergs2023-10-25 → 2023-10-26
    Icebergs reported in: a. A23A, 64-00.00S 052-45.00W

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