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 664/24 · Icebergs2024-03-31 → 2024-04-01
    Icebergs reported in: a. A23A, 59-22.80S 045-13.20W
  2. HYDROLANT 654/24 · Icebergs2024-03-30 → 2024-03-31
    Icebergs reported in: a. A23A, 59-22.80S 045-13.20W
  3. HYDROLANT 647/24 · Icebergs2024-03-29 → 2024-03-30
    Icebergs reported in: a. A23A, 60-33.60S 051-13.20W
  4. HYDROLANT 639/24 · Icebergs2024-03-28 → 2024-03-29
    Icebergs reported in: a. A23A, 60-33.60S 051-13.20W
  5. HYDROLANT 632/24 · Icebergs2024-03-27 → 2024-03-28
    Icebergs reported in: a. A23A, 60-33.60S 051-13.20W
  6. HYDROLANT 629/24 · Icebergs2024-03-26 → 2024-03-27
    Icebergs reported in: a. A23A, 60-33.60S 051-13.20W
  7. HYDROLANT 625/24 · Icebergs2024-03-25 → 2024-03-26
    Icebergs reported in: a. A23A, 60-33.60S 051-13.20W
  8. HYDROLANT 617/24 · Icebergs2024-03-24 → 2024-03-25
    Icebergs reported in: a. A23A, 60-33.60S 051-13.20W
  9. HYDROLANT 610/24 · Icebergs2024-03-23 → 2024-03-24
    Icebergs reported in: a. A23A, 60-03.00S 049-25.80W
  10. HYDROLANT 598/24 · Icebergs2024-03-22 → 2024-03-23
    Icebergs reported in: a. A23A, 60-03.00S 049-25.80W
  11. HYDROLANT 594/24 · Icebergs2024-03-21 → 2024-03-22
    Icebergs reported in: a. A23A, 60-03.00S 049-25.80W
  12. HYDROLANT 584/24 · Icebergs2024-03-20 → 2024-03-21
    Icebergs reported in: a. A23A, 60-03.00S 049-25.80W
  13. HYDROLANT 573/24 · Icebergs2024-03-19 → 2024-03-20
    Icebergs reported in: a. A23A, 60-03.00S 049-25.80W
  14. HYDROLANT 566/24 · Icebergs2024-03-18 → 2024-03-19
    Icebergs reported in: a. 60-03.00S 049-25.80W
  15. HYDROLANT 561/24 · Icebergs2024-03-17 → 2024-03-18
    Icebergs reported in: a. A23A, 60-03.00S 049-25.80W
  16. HYDROLANT 557/24 · Icebergs2024-03-16 → 2024-03-17
    Icebergs reported in: a. A23A, 60-17.40S 050-16.80W
  17. HYDROLANT 541/24 · Icebergs2024-03-15 → 2024-03-16
    Icebergs reported in: a. A23A, 60-17.40S 050-16.80W
  18. HYDROLANT 534/24 · Icebergs2024-03-14 → 2024-03-15
    Icebergs reported in: a. A23A, 60-17.40S 050-16.80W
  19. HYDROLANT 518/24 · Icebergs2024-03-13 → 2024-03-14
    Icebergs reported in: a. A23A, 60-17.40S 050-16.80W
  20. HYDROLANT 507/24 · Icebergs2024-03-12 → 2024-03-13
    Icebergs reported in: a. A23A, 60-17.40S 050-16.80W

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