Southern Ocean

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

in force
3
last 12 months
4
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

Icebergs2,99195%
Surveys421%
Missiles381%
Nav aids241%
Other181%
Wrecks120%
Derelicts40%
Exercises20%
Containers10%

Archive · 3,129 cancelled

  1. HYDROLANT 2395/21 · Icebergs2021-09-24 → 2021-09-25
    Icebergs reported in: a. 60-23S 047-32W
  2. HYDROLANT 2389/21 · Icebergs2021-09-23 → 2021-09-24
    Icebergs reported in: a. A63, 64-12S 054-31W
  3. HYDROLANT 2388/21 · Icebergs2021-09-23 → 2021-09-24
    Icebergs reported in: a. 60-23S 047-32W
  4. HYDROLANT 2381/21 · Icebergs2021-09-22 → 2021-09-23
    Icebergs reported in: a. 60-23S 047-32W b. 61-10S 047-00W c. 60-02S 046-03W d. 60-23S 045-20W 2. cancel this…
  5. HYDROLANT 2380/21 · Icebergs2021-09-22 → 2021-09-23
    Icebergs reported in: a. A63, 64-12S 054-31W
  6. HYDROLANT 2374/21 · Icebergs2021-09-21 → 2021-09-22
    Icebergs reported in: a. A63, 64-12S 054-31W
  7. HYDROLANT 2368/21 · Icebergs2021-09-20 → 2021-09-21
    Icebergs reported in: a. A63, 64-12S 054-31W
  8. HYDROLANT 2361/21 · Icebergs2021-09-19 → 2021-09-20
    Icebergs reported in: a. A63, 64-12S 054-31W
  9. HYDROLANT 2357/21 · Icebergs2021-09-18 → 2021-09-19
    Icebergs reported in: a. A63, 64-12S 054-31W
  10. HYDROLANT 2348/21 · Icebergs2021-09-17 → 2021-09-18
    Icebergs reported in: a. A63, 64-12S 054-31W
  11. HYDROLANT 2344/21 · Icebergs2021-09-16 → 2021-09-17
    Icebergs reported in: a. A63, 64-12S 054-31W
  12. HYDROLANT 2320/21 · Icebergs2021-09-13 → 2021-09-14
    Icebergs reported in: a. A63, 64-12S 054-31W
  13. HYDROLANT 2313/21 · Icebergs2021-09-12 → 2021-09-13
    Icebergs reported in: a. A63, 64-12S 054-31W
  14. HYDROLANT 2307/21 · Icebergs2021-09-11 → 2021-09-12
    Icebergs reported in: a. A63, 64-18S 054-42W
  15. HYDROLANT 2303/21 · Icebergs2021-09-10 → 2021-09-11
    Icebergs reported in: a. A63, 64-18S 054-42W
  16. HYDROLANT 2289/21 · Icebergs2021-09-09 → 2021-09-10
    Icebergs reported in: a. A63, 64-18S 054-42W
  17. HYDROLANT 2282/21 · Icebergs2021-09-07 → 2021-09-08
    Icebergs reported in: a. A63, 64-18S 054-42W
  18. HYDROLANT 2270/21 · Icebergs2021-09-05 → 2021-09-06
    Icebergs reported in: a. A63, 64-18S 054-42W
  19. HYDROLANT 2265/21 · Icebergs2021-09-04 → 2021-09-05
    Icebergs reported in: a. A63, 64-09S 055-12W
  20. HYDROLANT 2260/21 · Icebergs2021-09-03 → 2021-09-04
    Icebergs reported in: a. A63, 64-09S 055-12W

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