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Advice: Dredging Works - Northern Entrance to Port Mandurah canals
Mariners are advised that sand accretion has built up at the northern entrance to the Port Mandurah Canals reducing the channel width and depth. Temporary navigational aids have been installed.
Sand dredging works inside the northern entrance to the Port Mandurah Canals will commence in September 2021 and proceed until mid-December 2021.
Dredging will occur on Monday to Friday between the hours of 7am and 6pm.
The works will be carried out by the cutter suction dredge “Swan V” which has no self-propulsion and uses anchors to move, a 50 metre floating pipeline is connected to the stern of the dredge which is marked by orange buoys equipped with rhythmic orange lights operating at night.
For the duration of the works the dredge and pipeline will remain in the area of operation after normal operating hours.
When traversing the area mariners are requested to contact the dredge operators who will be monitoring the following radio frequencies.
- VHF Channel 12 or Marine 27 MHz Channel 90.
The dredge will exhibit shapes and lights in accordance with the Prevention of Collision at Sea Regulations 1983.
Mariners are advised to slow down, reduce wash, and navigate with caution when transiting the area. Please keep well clear of the above dredging operations at all times.
Chart reference: Department of Transport chart WA898 – Peel Inlet and Harvey Estuary
Mariners are advised to navigate with caution when transiting the area and keep well clear of the above monitoring buoy.
- Location: 32° 31.842'S, 115° 42.858'E
- Start date: September 2021
- End date: Mid December 2021
- Issued: 14/09/2021
- Number: 2021-125
Warning: Possible Debris – Murray and Serpentine Rivers
Description: Due to recent weather conditions, heavy rainfall and flooding, debris may have accumulated in various locations within the Murray and Serpentine Rivers.
Logs and debris may present a hazard to Navigation.
River users are advised to navigate with care and keep a lookout and travel at low speeds.
Chart reference: Department of Transport chart 848 – Peel Inlet and Harvey Estuary.
- Issued: 26/17/2021.
- Number: 2021 - 98.
Advice: Deployment of 4 directional wave buoys – offshore Dawesville vicinity
Mariners are advised that four directional wave buoys (DWRs) will be deployed in the offshore Dawesville vicinity from mid July 2021 to July 2022 at the following locations, approximately 2 nautical miles from the shore:
- 32.629°S, 115.580°’E
- 32.625°S, 115.593°’E
- 32.614°S, 115.583°’E
- 32.610°S, 115.596°’E
The above buoys are 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
- Location: 32.629°S, 115.580°’E
- Chart reference: Department of Transport chart 755– Bouvard
Mariners are advised to navigate with caution when transiting the above area and keep well clear of the above DWRs at all times.
- Start date: Mid July 2021
- End date: Mid July 2022
- Issued: 16/07/2021
- Number: 2021-92
Warning: Grounded Vessel ‘Bambi’, Harvey Estuary, Birchmont Vicinity
- Location: 32° 44.428’S, 115° 42.648’E.
- Chart reference: Department of Transport chart 848 – Peel Inlet and Harvey Estuary.
- Issued: 18/03/2021.
Warning: Shallowing around Port Marker adjacent to Novara Boat Ramp
Description: It has been reported that shallowing has occurred around the port marker adjacent to the Novara boat ramp.
Mariners are advised to navigate with caution in the area
Location: 32° 34.394'S, 115° 40.485'E.
Chart: Department of Transport Chart WA848 – Peel Inlet and Harvey Estuary
Warning: Submerged rocks, Waroona Dam
Southeast sector of Waroona Dam/Lake Navarino, east of the camp ground
Mariners are advised that submerged rocks have been reported near the shore in the southeast sector of Waroona Dam/Lake Navarino, to the east of the camp ground in the vicinity of the following coordinate:
- Location: 32° 51.042'S, 115° 59.990'E
Mariners are advised to navigate with caution when transiting in the vicinity of the above submerged rocks.
Mark Briant, Manager, Navigational Safety and Moorings, Marine Safety, Department of Transport.
- Start date:
- End date:
- Issued: 25/06/2019