Great Australian Bight
IHO sea area 62 · 118° to 146° E, -44° to -31° N
- in force
- 5
- last 12 months
- 18
- archive messages
- 565
- categories
- 13
What the archive shows
565 messages are recorded since 1991-02-13 for the Great Australian Bight. The selection uses the IHO sea area; a message may describe an exercise, equipment outage or continuing operation as well as a hazard report.
Nav aids accounts for 289 of 565 recorded messages (51%), the largest category group in this selection.
The NGA historical archive froze in 2024-05; live collection began 2026-08-17. Counts around that gap are incomplete, and changes in reporting volume do not establish changes in incident frequency.
- An older warning still listed in force · issued 2026-05-30 01:04ZThe vessel Dependable is conducting cable lay operations from 38-25S 144-28E to 40-22S 137-28E, with 1.5 nautical mile clearance requested.
In force now · 5
- AUSCOAST 292/26 · Nav aids2026-09-07Two 6 meter yellow buoys with white flashing light every 3 seconds are temporarily placed near 38-47.19S 142-36.00E; 2.5 nautical mile clearance requested.
- HYDROPAC 1864/26 · Nav aids2026-06-29A yellow six-meter buoy is established in the Great Australian Bight at 38-47.62S 142-37.77E; a three-mile berth is requested.
- AUSCOAST 228/26 · Nav aids2026-06-29A 6-meter yellow surface buoy is established at 38-47.62S 142-37.77E, requesting 2.5 nautical miles clearance.
- HYDROPAC 1585/26 · Cable ops2026-05-30Cable-laying is in progress in Bass Strait and Great Australian Bight, Australia, by the ship Dependable; a two-mile berth is requested.
- AUSCOAST 208/26 · Other2026-05-30The vessel Dependable is conducting cable lay operations from 38-25S 144-28E to 40-22S 137-28E, with 1.5 nautical mile clearance requested.
Longest in force
- AUSCOAST 208/26 · Other2026-05-30The vessel Dependable is conducting cable lay operations from 38-25S 144-28E to 40-22S 137-28E, with 1.5 nautical mile clearance requested.
- HYDROPAC 1585/26 · Cable ops2026-05-30Cable-laying is in progress in Bass Strait and Great Australian Bight, Australia, by the ship Dependable; a two-mile berth is requested.
- AUSCOAST 228/26 · Nav aids2026-06-29A 6-meter yellow surface buoy is established at 38-47.62S 142-37.77E, requesting 2.5 nautical miles clearance.
- HYDROPAC 1864/26 · Nav aids2026-06-29A yellow six-meter buoy is established in the Great Australian Bight at 38-47.62S 142-37.77E; a three-mile berth is requested.
- AUSCOAST 292/26 · Nav aids2026-09-07Two 6 meter yellow buoys with white flashing light every 3 seconds are temporarily placed near 38-47.19S 142-36.00E; 2.5 nautical mile clearance requested.
By year
91
99
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
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25
26
By month (all years)
J
F
M
A
M
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S
O
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By category · available archive
| Nav aids | 289 | 51% |
| Incidents | 125 | 22% |
| Surveys | 46 | 8% |
| Other | 42 | 7% |
| Derelicts | 21 | 4% |
| Missiles | 10 | 2% |
| Cable ops | 10 | 2% |
| Wrecks | 8 | 1% |
| Containers | 7 | 1% |
| Debris | 3 | 1% |
| Towing | 2 | 0% |
| Spills | 1 | 0% |
| Exercises | 1 | 0% |
Ports on this sea · 10
Busiest first by annual vessel calls (IMF PortWatch); each port page shows the warnings within 60 nm, its World Port Index profile and monthly port calls.
- Port Adelaide · Australia45 archived
- Portland · Australia3 in force
- Albany · Australia80 archived
- Port Lincoln · Australia95 archived
- Whyalla · Australia16 archived
- Port Pirie · Australia16 archived
- King Island · Australia2 in force
- Port Bonython · Australia11 archived
- Wallaroo · Australia22 archived
- Port Giles · Australia133 archived
Archive · 560 cancelled
- HYDROPAC 2583/26 · Nav aids2026-09-08 → 2026-09-08Twelve six-meter yellow buoys with white flashing every 3 seconds temporarily placed in Great Australian Bight near 38-41S 142-49E. Three-mile berth requested.
- AUSCOAST 293/26 · Nav aids2026-09-08 → 2026-09-23Twelve 6-meter yellow surface buoys with white flashing 3-second lights are temporarily established near 38-41.03S 142-49.49E; 2.5 nautical miles clearance requested.
- HYDROPAC 2578/26 · Nav aids2026-09-07 → 2026-09-08In the Great Australian Bight, two yellow 6-meter buoys with 3-second white flashes are temporarily established near 38-47.19S 142-36.00E; request three-mile berth.
- AUSCOAST 277/26 · Surveys2026-08-17 → 2026-10-02Drill rig Transocean Equinox is located at 38-46.20S 142-48.80E, with 2.5 nautical miles clearance requested.
- HYDROPAC 1863/26 · Nav aids2026-06-29 → 2026-08-21Twelve six-meter yellow buoys with flashing white light every 3 seconds are established in Great Australian Bight, Australia, near 38-46S 142-48.8E; three mile berth requested.
- AUSCOAST 227/26 · Other2026-06-29 → 2026-08-2112 six-meter yellow buoys with white flashing lights every 3 seconds are deployed within 1.5 nautical miles of 38-46.00S 142-48.80E; 2.5 nautical miles clearance requested.
- HYDROPAC 1108/26 · Wrecks2026-04-14 → 2026-08-17Plank Shoal light in Spencer Gulf, Australia, is unlit.
- HYDROPAC 419/26 · Nav aids2026-02-12 → 2026-08-17In the Great Australian Bight, Australia, twelve yellow six-meter buoys flashing white every 3 seconds are placed within two miles of 39-13.33S 142-50.33E. Three-mile berth requested.
- HYDROPAC 85/26 · Missiles2026-01-12 → 2026-04-17Hazardous operations, space debris 1100Z to 1500Z daily 17 thru 21 jan in area bound by 32-02.50S…
- HYDROPAC 3402/25 · Nav aids2025-12-20 → 2026-04-1712 yellow light buoys, fl w 3 sec, 6 meters in height established in area within one mile of 38-47.62S…
- HYDROPAC 3193/25 · Missiles2025-12-03 → 2026-01-16Hazardous operations, space debris 1420Z to 1705Z daily 07 thru 09 dec in area bound by 32-09.25S…
- HYDROPAC 3111/25 · Cable ops2025-11-27 → 2026-01-16Cable operations in progress until further notice by cableship ile d'yeu in area within 20 miles of…
- HYDROPAC 2741/25 · Nav aids2025-10-26 → 2026-04-17Eight, six meter buoys, yellow, fl w 3 sec, established in area within one mile of 39-00.85S 142-36.47E
- HYDROPAC 110/25 · Nav aids2025-01-17 → 2025-06-16West cape light 35-14.70S 136-49.44E unreliable
- HYDROPAC 78/25 · Surveys2025-01-12 → 2025-06-16Survey operations in progress until further notice by M/V offshore solution in area bound by 38-39.00S…
- HYDROPAC 24/25 · Other2025-01-06 → 2025-06-16Fishing gear reported in 35-20.50S 135-36.50E
- HYDROPAC 5/25 · Surveys2025-01-01 → 2025-06-16Underwater operations in progress until further notice by M/V seven sisters in 38-43.58S 142-58.42E
- HYDROPAC 3873/24 · Nav aids2024-12-21 → 2025-06-16Cape donington light 35-43.59S 135-59.63E unreliable
- HYDROPAC 3361/24 · Nav aids2024-10-26 → 2025-06-16Figure of eight island light 34-02.00S 121-36.17E unreliable
- HYDROPAC 3155/24 · Surveys2024-09-27 → 2024-11-22Underwater operations in progress until further notice by M/V seven pegasus in area bound by 39-11.00S…
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.