Great Southern notices

The Nornalup Inlet Sea Mouth Isolated Danger Buoy is reported to be MISSING.

Please navigate with caution when transiting the area

Mariners are advised that limestone reefs are scheduled to be installed at Oyster Harbour Albany at two (2) sites as follows:

Scheduled dates: 11 April 2023 to 30 June 2023
Operating hours: Monday to Saturday 7am to 6pm
Vessels: Barge ‘Shaw II’ (specs: 20m x 7.5m); Tug Leah (specs: 13.7m x 4.0m).

Limestone rock will be loaded onto ‘Shaw II’ at the Lower King Boat ramp. Tug Leah will then manoeuvre the barge to and from the 2 reef sites located as follows:


Bounded by the following corner coordinates:
Green Island:

Green Island (NW Corner): 34° 59.165'S, 117° 57.212'E (water depth:5.8m)
Green Island (NE Corner): 34° 59.200'S, 117° 57.263'E (water depth 7.1m)
Green Island (SE Corner): 34° 59.304'S, 117° 57.157'E (water depth 5.5m)
Green Island (SW Corner): 34° 59.269'S, 117° 57.106'E (water depth 6.1m)

Emu Point Water Ski Area:

Emu Point Waterski Area:
Emu Point Waterski Area (NW Corner): 34° 59.448'S, 117° 57.576'E (water depth 4.6m)
Emu Point Waterski Area (NE Corner): 34° 59.504'S. 117° 57.593'E (water depth 5.7m)
Emu Point Waterski Area (SE Corner): 34° 59.584'S, 117° 57.571'E (water depth 4.2m)
Emu Point Waterski Area (SW Corner): 34° 59.620'S, 117° 57.526'E (water depth 5.9m)


The reef sites will protrude approximately 0.2m – 1m from the seabed. A minimum of 3.5m clearance will be maintained from the highest point of the reef structures and the surface of the water at LAT (Lowest Astronomical Tide).
When at the reef sites, the barge will be anchored and an excavator will deploy the reef material. The barge will remain on location outside of operating hours.

During the works, the corners of the construction zones will be marked by yellow marker buoys equipped with flashing yellow lights.
All vessels taking part in the above works will exhibit shapes and lights in accordance with the Prevention of Collisions at Sea Regulations 1983 at all times.
Operators will monitor Marine Radio VHF Channel16 during operating hours.

Mariners are advised to navigate with caution when transiting the area and keep well clear of the above operations.

A directional wave buoy (DWR) has been deployed approximately 7 nautical miles offshore from Bremer Bay at the location below. The DWR is yellow in colour, approximately 700mm in diameter, and equipped with a whip antenna and flashing yellow light.

Flash rate: Fl (5) Y 5s


Mariners are advised to navigate with caution when transiting the area and keep well clear of the above DWR

Mariners are advised that shallowing has occurred throughout the Wilson Inlet including the mouth of the Denmark River near the Rivermouth Caravan Park. As water levels are subject to rainfall, levels may be lower than charted depths.

Mariners are advised that a small aquaculture research site is scheduled to be deployed in Princess Royal Harbour, Albany around 30 January 2023. The corners of the site will be marked with yellow buoys, approximately 1.0m in height, and equipped with a flashing yellow lights.

Location of marker buoys:

-35: 4.405S, 117: 54.713E
-35: 4.405S, 117: 54.738E
-35: 4.480S, 117: 54.738E
-35: 4.480S, 117: 54.713E

Flash rate: Fl Y 4s

Recovery date: 31/12/2023

Mariners are advised to navigate with caution when transiting the area and keep well clear of the above aquaculture research site

Mariners are advised that one (1) Directional Wave Buoy has been deployed in the Torndirrup Peninsula in Albany at the following location:

35° 04.1262’S, 117° 46.197’E

The above buoy is predominantly yellow in colour (with black solar panels), approximately 0.42m in diameter and equipped with flashing yellow light (flash rate: Fl Y 2.5s)

Recovery date: 18 October 2024

Mariners are advised to navigate with caution in the vicinity and not to secure to the buoy at anytime.

Mariners are advised that a build-up of sand has been identified adjacent to the Bremer Bay Boat Ramp. Charted depths have been reduced in some areas by 1.4m. A significant high spot of 1.3m at LAT exists approximately 38m directly adjacent to the boat ramp.

Large draft vessels are advised to exercise caution when navigating the area and on approach to the Southern Service Wharf.

Please see updated chartlet attached.

Mariners are advised that a wave buoy has been deployed approximately 0.5 nautical miles offshore from Salmon Holes Albany.

The above wave buoy is yellow in colour, approximately 420mm in diameter, and equipped with a flashing yellow light.

Flash rate: Fl Y 2.5s

A sub-surface recovery line connected to a second anchor extends approximately 90m to the north east. This second recovery anchor has a small orange unlit surface float approximately 300mm in diameter.

Provisional recovery date: 30/04/2023

No vessel is to moor to, or interfere with, the above wave buoy or float at any time.

Mariners are advised to navigate with caution when transiting the area and keep well clear of the above wave buoy and float at all times.

Mariners are advised that a wind data buoy has been deployed in King George Sound, approximately 1.3 nautical miles west, north west of Breaksea Island, at the following location:
Location: 35° 3.196' S, 118° 0.907' E

A second wind data buoy will be deployed around 7 February 2022 in King George Sound, approximately 1.5 nautical miles east, south east of Seal Island, at the following location:
Location: 35° 05.000' S, 118° 0.360' E

The above wind data buoys are yellow in colour, approximately 1.3 metres in height, and equipped with flashing yellow light.
Flash rate: Fl Y 4.5s

No vessel is to secure to or interfere with the above buoys at any time.
Recovery date: 31/12/2023