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 551/18 · Icebergs2018-02-09 → 2018-02-10
    Icebergs reported in: a. B22A, 74-04S 108-54W
  2. HYDROPAC 535/18 · Surveys2018-02-08 → 2018-02-11
    Underwater operations 081800Z feb until further notice by M/V joides resolution in 74-13.04S 173-38.02W
  3. HYDROPAC 521/18 · Icebergs2018-02-07 → 2018-02-08
    Icebergs reported in: a. B22A, 74-04S 108-54W
  4. HYDROPAC 506/18 · Icebergs2018-02-06 → 2018-02-07
    Icebergs reported in: a. B22A, 74-04S 108-54W
  5. HYDROPAC 498/18 · Surveys2018-02-06 → 2018-02-08
    Underwater operations in progress until further notice by M/V joides resolution in 75-00.06S 173-55.21W
  6. HYDROPAC 481/18 · Icebergs2018-02-04 → 2018-02-05
    Icebergs reported in: a. B22A, 74-04S 108-54W
  7. HYDROPAC 475/18 · Surveys2018-02-03 → 2018-02-06
    Underwater operations in progress until further notice by M/V joides resolution in 74-13.04S 173-38.02W
  8. HYDROPAC 472/18 · Icebergs2018-02-03 → 2018-02-04
    Icebergs reported in: a. B22A, 74-04S 108-54W
  9. HYDROPAC 429/18 · Icebergs2018-01-31 → 2018-02-01
    Icebergs reported in: a. B22A, 74-04S 108-54W
  10. HYDROPAC 403/18 · Icebergs2018-01-29 → 2018-01-30
    Icebergs reported in: a. B22A, 74-04S 108-54W
  11. HYDROPAC 389/18 · Icebergs2018-01-28 → 2018-01-29
    Icebergs reported in: a. B22A, 74-04S 108-54W
  12. HYDROPAC 377/18 · Icebergs2018-01-27 → 2018-01-28
    Icebergs reported in: a. B22A, 74-04S 108-54W
  13. HYDROPAC 363/18 · Icebergs2018-01-26 → 2018-01-29
    Icebergs reported in: a. B22A, 74-04S 108-54W
  14. HYDROPAC 324/18 · Icebergs2018-01-24 → 2018-01-25
    Icebergs reported in: a. B22A, 74-04S 108-54W
  15. HYDROPAC 310/18 · Icebergs2018-01-23 → 2018-01-24
    Icebergs reported in: a. B22A, 74-04S 108-54W
  16. HYDROPAC 293/18 · Icebergs2018-01-22 → 2018-01-23
    Icebergs reported in: a. B22A, 74-04S 108-54W
  17. HYDROPAC 282/18 · Icebergs2018-01-21 → 2018-01-22
    Icebergs reported in: a. B22A, 74-04S 108-54W
  18. HYDROPAC 280/18 · Surveys2018-01-21 → 2018-02-03
    Underwater operations 211700Z jan until further notice by M/V joides resolution in 76-33.23S 174-45.48W
  19. HYDROPAC 267/18 · Icebergs2018-01-20 → 2018-01-21
    Icebergs reported in: a. B22A, 74-04S 108-54W
  20. HYDROPAC 247/18 · Icebergs2018-01-18 → 2018-01-19
    Icebergs reported in: a. B22A, 74-04S 108-54W

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