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 3484/18 · Icebergs2018-11-09 → 2018-11-10
    Icebergs reported in: a. B09F, 61-36S 054-12W
  2. HYDROLANT 3473/18 · Icebergs2018-11-08 → 2018-11-09
    Icebergs reported in: a. B09F, 61-50S 054-34W
  3. HYDROPAC 3931/18 · Missiles2018-10-30 → 2018-11-04
    Hazardous operations, space debris 031900Z to 042230Z nov in area bound by 59-42.6S 165-49.2E, 57-28.8S…
  4. HYDROPAC 3912/18 · Missiles2018-10-28 → 2018-10-30
    Hazardous operations, space debris 031900Z to 042230Z nov in area bound by 62-11S 163-00E, 59-03S 131-00W,…
  5. HYDROLANT 3357/18 · Icebergs2018-10-28 → 2018-10-29
    Icebergs reported in: a. B09F, 61-36S 054-12W
  6. HYDROLANT 3350/18 · Icebergs2018-10-27 → 2018-10-28
    Icebergs reported in: a. B09F, 61-56S 054-22W
  7. HYDROLANT 3343/18 · Icebergs2018-10-26 → 2018-10-27
    Icebergs reported in: a. B09F, 61-36S 054-12W
  8. HYDROLANT 3319/18 · Icebergs2018-10-23 → 2018-10-24
    Icebergs reported in: a. B09F, 61-56S 054-22W
  9. HYDROLANT 3311/18 · Icebergs2018-10-22 → 2018-10-23
    Icebergs reported in: a. B09F, 61-56S 054-22W
  10. HYDROLANT 3283/18 · Icebergs2018-10-19 → 2018-10-20
    Icebergs reported in: a. B09F, 61-36S 054-12W
  11. HYDROLANT 3272/18 · Icebergs2018-10-18 → 2018-10-19
    Icebergs reported in: a. B09F, 61-36S 054-12W
  12. HYDROLANT 3258/18 · Icebergs2018-10-17 → 2018-10-18
    Icebergs reported in: a. B09F, 61-37S 054-01W
  13. HYDROLANT 3250/18 · Icebergs2018-10-16 → 2018-10-17
    Icebergs reported in: a. B09F, 61-37S 054-01W
  14. HYDROLANT 3241/18 · Icebergs2018-10-15 → 2018-10-16
    Icebergs reported in: a. B09F, 61-37S 054-01W
  15. HYDROLANT 3229/18 · Icebergs2018-10-14 → 2018-10-15
    Icebergs reported in: a. B09F, 61-51S 054-29W
  16. HYDROLANT 3222/18 · Icebergs2018-10-13 → 2018-10-14
    Icebergs reported in: a. B09F, 61-36S 054-12W
  17. HYDROLANT 3208/18 · Icebergs2018-10-12 → 2018-10-13
    Icebergs reported in: a. B09F, 61-51S 054-29W
  18. HYDROLANT 3200/18 · Icebergs2018-10-11 → 2018-10-12
    Icebergs reported in: a. B09F, 61-36S 054-12W
  19. HYDROLANT 3187/18 · Icebergs2018-10-10 → 2018-10-11
    Icebergs reported in: a. B09F, 61-36S 054-12W
  20. HYDROLANT 3179/18 · Icebergs2018-10-09 → 2018-10-10
    Icebergs reported in: a. B09F, 61-51S 054-29W

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