Southern Ocean

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

in force
3
last 12 months
3
since 1999
3,132
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%
Missiles391%
Nav aids241%
Other181%
Wrecks120%
Derelicts40%
Exercises20%
Containers10%

Archive · 3,129 cancelled

  1. HYDROLANT 500/24 · Icebergs2024-03-11 → 2024-03-12
    Icebergs reported in: a. A23A, 60-17.40S 050-16.80W
  2. HYDROLANT 494/24 · Icebergs2024-03-10 → 2024-03-11
    Icebergs reported in: a. A23A, 60-17.40S 050-16.80W
  3. HYDROLANT 485/24 · Icebergs2024-03-09 → 2024-03-10
    Icebergs reported in: a. A23A, 60-17.40S 050-16.80W
  4. HYDROLANT 479/24 · Icebergs2024-03-08 → 2024-03-09
    Icebergs reported in: a. A23A, 60-33.60 s 051-13.20 w. b. A74A, 72-04.20 s 054-44.40 w. c. A74B, 65-07.80 s,…
  5. HYDROLANT 473/24 · Icebergs2024-03-07 → 2024-03-08
    Icebergs reported in: a. A23A, 60-33.60 s 051-13.20 w. b. A74A, 72-04.20 s 0054-44.40 w. c. A74B, 65-07.80…
  6. HYDROLANT 464/24 · Icebergs2024-03-06 → 2024-03-07
    Icebergs reported in: a. A23A, 60-33.60S 051-13.20W
  7. HYDROLANT 454/24 · Icebergs2024-03-05 → 2024-03-06
    Icebergs reported in: a. A23A, 60-33.60S 051-13.20W
  8. HYDROLANT 446/24 · Icebergs2024-03-04 → 2024-03-05
    Icebergs reported in: a. A23A, 60-33.60S 051-13.20W
  9. HYDROLANT 439/24 · Icebergs2024-03-03 → 2024-03-04
    Icebergs reported in: a. A23A, 60-33.60S 051-13.20W
  10. HYDROLANT 437/24 · Icebergs2024-03-03 → 2024-03-04
    Icebergs reported in: a. A23A, 60-33.60S 051-13.20W
  11. HYDROLANT 433/24 · Icebergs2024-03-02 → 2024-03-03
    Icebergs reported in: a. A23A, 60-42.60S 051-35.40W
  12. HYDROLANT 427/24 · Icebergs2024-03-02 → 2024-03-03
    Icebergs reported in: a. A23A, 60-42.60S 051-35.40W
  13. HYDROLANT 423/24 · Icebergs2024-03-01 → 2024-03-02
    Icebergs reported in: a. A23A, 60-42.60S 051-35.40W
  14. HYDROLANT 420/24 · Icebergs2024-02-29 → 2024-03-01
    Icebergs reported in: a. A23A, 60-42.60S 051-35.40W
  15. HYDROLANT 414/24 · Icebergs2024-02-28 → 2024-02-29
    Icebergs reported in: a. A23A, 60-42.60S 051-35.40W
  16. HYDROLANT 408/24 · Icebergs2024-02-27 → 2024-02-28
    Icebergs reported in: a. A23A, 60-42.60S 051-35.40W
  17. HYDROLANT 401/24 · Icebergs2024-02-26 → 2024-02-27
    Icebergs reported in: a. A23A, 60-42.60S 051-35.40W
  18. HYDROLANT 396/24 · Icebergs2024-02-25 → 2024-02-26
    Icebergs reported in: a. D30B, 69-43.20S 044-12.00W
  19. HYDROLANT 390/24 · Icebergs2024-02-24 → 2024-02-25
    Icebergs reported in: a. D30B, 69-43.20S 044-12.00W
  20. HYDROLANT 381/24 · Icebergs2024-02-23 → 2024-02-23
    Icebergs reported in: a. A23A, 60-48.00S 051-38.40W

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