South West

Mariners are advised that the Gnarabup boat ramp in the Shire of Augusta will be closed from 28 April 2026 to 1 May 2026 while beach nourishment activities are undertaken.

Mariners are advised that Jetty and Marine Constructions Pty Ltd (JMC) will be undertaking demolition works at the old Pilot boat jetty from 20 April 2026 to 31 May 2026.

The works will occur in the immediate vicinity of the old Pilot boat jetty, within the Casuarina Boat Harbour, adjacent to the Marine Rescue Bunbury building.

Works will be conducted Monday to Saturday between the hours of 7:00 am to 5:00 pm subject to daylight, weather, and sea conditions.

During the works period:
•    A JMC barge with crane operations will be positioned at the worksite
•    A silt curtain will be installed around the demolition area
•    Temporary yellow flashing buoys will mark the works area; these will be located external to the silt curtain
•    Diving operations will be conducted in and around the worksite
•    All dive vessels will be clearly marked with dive flags in accordance with regulations

All vessels associated with the works will display lights and shapes as required by the Prevention of Collisions in State Waters Regulations 1983.

When navigating the area mariners are advised to reduce their speed and wake, keep well clear of all work areas and follow all temporary markers and signage.

For assistance or further information, contact site vessels on Marine VHF Channel 12, which will be continuously monitored by JMC.

Mariners are advised that there is an area of shallow water caused by sand accumulation on the east end approximately 75m along Berth 1 and 50m away from the berth edge. Approximately 800m SSW of McKenna Point.

Mariners are advised to navigate the area with caution.

Mariners are advised that 1 x Acoustic receiver will be deployed on Wednesday 27 March 2024 at the entrance of Leschenault Estuary, The Cut, Bunbury at approximately 33° 18.273'S, 115° 40.594'E.

The above acoustic receiver will be attached to a concrete block set with a steel rod approximately 50 cm from the seabed. (0.8m W x 0.8m L x 0.2m H - concrete, 0.3m H - steel).

Provisional recovery date: September 2026

No vessel is to moor to or interfere with the above receiver at any time.
 

A directional wave buoy (DWRB) has been deployed approximately 12 nautical miles west of Cape Naturaliste at the location below. The DWRB is yellow in colour, approximately 700mm in diameter, and equipped with a 2m whip antenna and flashing yellow light.

Flash rate: Fl (5) Y 20s

Mariners are requested to maintain a minimum distance of 100 meters from the DWRB, including any associated fishing equipment at all times so as to not interfere with or damage the DWRB.

Mariners are advised that three wave buoys are scheduled to be deployed in Geographe Bay as follows:

Locations:

-33.5915S, 115.1165E (Dunsborough)
-33.6001S, 115.2499E (Abbey)
-33.628S, 115.338E (Busselton Jetty)


Deployment date: 08/09/2022
Provisional recovery date: 08/09/2024

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

Flash rate: Fl Y 2.5s

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

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

Mariners are advised that shallowing has occurred at the northern entrance to the Pelican Point Canals (immediately downstream of the mouth of the Collie River, Bunbury) reducing depths and restricting navigation in the vicinity.

The shallowest area of the canals, outside the edges of the canals, is reported to be on the southern side of the approach channel, about 20m upstream of the pedestrian bridge into the northern canal entrance

Mariners are advised that the Marlston Waterfront Jetty (adjacent to the Dome Café, Bonnefoi Boulevard Bunbury) has been closed until further notice due to storm damage.

A boom and yellow marker buoys have been deployed around the jetty.

Mariners are advised to remain east of the yellow marker buoys and exercise caution when towing skiers in the adjacent Koombana Bay water ski area.

Mariners are advised that mobile seagrass wrack is present throughout the Port Geographe Harbour entrance channel.

This material can vary significantly in thickness and position over short time frames, reducing depths and restricting navigation in the channel.

The affected area includes the full extent of the entrance channel, with the worst affected area being in the entrance channel directly adjacent to the lagoon rock-wall.

Mariners are advised to navigate with caution in the entrance channel, allowing for changing conditions when traversing the area. Vessels may be at risk of grounding when navigating through this area.