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 2579/21 · Icebergs2021-10-19 → 2021-10-20
    Icebergs reported in: a. 63-38S 051-37W
  2. HYDROLANT 2572/21 · Icebergs2021-10-18 → 2021-10-19
    Icebergs reported in: a. 63-40S 051-38W
  3. HYDROLANT 2571/21 · Icebergs2021-10-18 → 2021-10-19
    Icebergs reported in: a. A63, 63-55S 052-35W
  4. HYDROLANT 2560/21 · Icebergs2021-10-17 → 2021-10-18
    Icebergs reported in: a. A63, 63-55S 052-35W
  5. HYDROLANT 2559/21 · Icebergs2021-10-17 → 2021-10-18
    Icebergs reported in: a. 63-40S 051-38W
  6. HYDROLANT 2550/21 · Icebergs2021-10-16 → 2021-10-17
    Icebergs reported in: a. 63-44S 051-49W
  7. HYDROLANT 2549/21 · Icebergs2021-10-16 → 2021-10-17
    Icebergs reported in: a. A63, 63-55S 052-35W
  8. HYDROLANT 2544/21 · Icebergs2021-10-15 → 2021-10-16
    Icebergs reported in: a. A63, 63-56S 053-32W
  9. HYDROLANT 2543/21 · Icebergs2021-10-15 → 2021-10-16
    Icebergs reported in: a. 63-43S 051-51W
  10. HYDROLANT 2538/21 · Icebergs2021-10-14 → 2021-10-15
    Icebergs reported in: a. A63, 63-56S 053-32W
  11. HYDROLANT 2537/21 · Icebergs2021-10-14 → 2021-10-15
    Iceberg reported in: a. 63-46S 051-58W
  12. HYDROLANT 2528/21 · Icebergs2021-10-13 → 2021-10-14
    Iceberg reported in: a. 63-51S 052-10W 2. cancel this msg 141613Z oct 21
  13. HYDROLANT 2527/21 · Icebergs2021-10-13 → 2021-10-14
    Icebergs reported in: a. A63, 63-56S 053-32W
  14. HYDROLANT 2518/21 · Icebergs2021-10-12 → 2021-10-13
    Icebergs reported in: a. A63, 63-56S 053-32W
  15. HYDROLANT 2516/21 · Icebergs2021-10-11 → 2021-10-12
    Icebergs reported in: a. A63, 63-56S 053-32W
  16. HYDROLANT 2509/21 · Icebergs2021-10-10 → 2021-10-11
    Icebergs reported in: a. A63, 64-05S 054-19W
  17. HYDROLANT 2503/21 · Icebergs2021-10-09 → 2021-10-10
    Icebergs reported in: a. A63, 64-05S 054-19W
  18. HYDROLANT 2497/21 · Icebergs2021-10-08 → 2021-10-09
    Icebergs reported in: a. A63, 64-05S 054-19W
  19. HYDROLANT 2489/21 · Icebergs2021-10-07 → 2021-10-08
    Icebergs reported in: a. A63, 64-05S 054-19W
  20. HYDROLANT 2483/21 · Icebergs2021-10-06 → 2021-10-07
    Icebergs reported in: a. A63, 64-05S 054-19W

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