Perth notices
View navigational warnings, event notices and Temporary Notices To Mariners for the Perth region.
Warning: Large Yacht ran aground - Penguin Island, Rockingham
The vessel has been smashed up against the reef leaving significant amounts of debris in the area including large timber masts.
Mariners are advised to proceed with extreme caution when navigating the area and to be aware for floating debris.
Advice: Strobe Lighting – SFM Marines, Henderson
Mariners are advised to exercise caution when transiting through the area.
Advice: Installation of Directional Wave Buoy - Hillarys
• Latitude: -31.84474
• Longitude: 115.64639
The yellow DWRB is unlit and secured with a 45-meter poly rope, featuring an in-line float positioned 5 meters above the seabed. It is anchored to the seafloor with a 60-kilogram clump steel anchor.
Mariners are advised to navigate with caution and maintain a safe distance from the monitoring device.
Advice: Hydrographic Surveying - Alkimos Offshore
Location: Alkimos Offshore and vicinity.
Bounding box of survey area coordinates:
• 31 36.921 S 115 35.826 E
• 31 36.921 S 115 39.433 E
• 31 38.669 S 115 39.433 E
• 31 38.669 S 115 35.826 E
Duration
• 13/01/25 – 19/01/25
Warning: Vessel Semi-Submerged - Mangles Bay
Please proceed with caution when transsiting the area and be aware for potential debris.
Advice: Rottnest Ferries - Impeded by Water Depth within Thomson Bay Entrance
Mariners are advised to keep a lookout before entering the channel and are not to impede to passage of all Rottnest Ferries.
Advice: Construction Works and Closures, Ocean Reef Marina, WA
These works form part of the Ocean Reef Marina Project.
The on-water stages comprise of the following works,
• Beach and edge wall works within the marina
• Demolition and construction of various boat ramps.
• Opening of all 8 new boat ramps
On water works will be in place until September 2025
The works area will be delineated by yellow buoys placed along the length of the silt curtain at 30m intervals. Flashing yellow lights visible to 1 nautical mile will be affixed to the buoys to alert mariners/users of the construction zone. Please refer below to a diagram of the works area.
These works will occur between 07:00 am and 07:00 pm Monday to Saturday.
Operators will monitor Marine Radio VHF Channel 16 during operating hours.
Access to the boat ramps will be maintained however not at full capacity.
I Graeme Meinema, delegate of the Chief Executive Officer, acting pursuant to section 66 of the Western Australian Marine Act 1982 hereby cancel notice 5792 published on the 15 April 2024 and close the following area of water to all vessels from 29 October 2024.
Closure area:
Area 1
All waters of the Ocean Reef Boat Harbour bounded by the shore and line commencing at -31° 45.505' S, 115° 43.516' E thence to -31° 45.461' S, 115° 43.426' E. This corresponds to an area of waters that have been enclosed by a silt curtain (bunding).
Area 2
All waters of the Ocean Reef Boat Harbour bounded by the shore and line commencing at -31° 45.617' S, 115° 43.576' E thence to -31° 45.540' S, 115° 43.541' E. This corresponds to an area of waters that have been enclosed by a silt curtain (bunding).
Area 3
All waters in the vicinity of the boat ramp jetties that are encapsulated by silt curtains (bunding).
Conditions of closure;
Bonafide vessels associated with the construction works and all Government vessels are exempt from the closure.
Mariners are advised to use caution when transiting the area and always keep well clear of the above operations when transiting to the boat ramps that remain open and note, all waters of the Ocean Reef Marina are closed to windsurfing, kitesurfing, and winging activities.
Swimming and kayaking are prohibited within the above works area.
This notice is in effect as of 29 October 2024
All coordinates based on GDA 2020

Advice: Two Rocks Marina service wharf restrictions
The Western wharf including access to fuel and boat lift operations remain open.
For further information please contact the Two Rocks Marina office on 1300 863 308.
Please refer to the PDF below for further information.

Warning: Boat Ramp Closure – Bent Street Boat Ramp – Rockingham
Mariners are advised to use the eastern formal concrete boat ramp lane, including the beach launching area with caution, keeping in mind the potential for shallow water depths at this boat ramp. The eastern formal concrete boat ramp lane associated with the jetty, and the informal eastern beach launching area can be used for both launching and retrieving of recreational vessels.
Mariners are advised to exercise caution and be aware of changing conditions.
All enquiries to the City of Rockingham – 08 9528 0333
Advice: Deployment Of 1x Directional Wave Buoy - Hillarys
-31: 50.8680 S 115: 38.7900 S
The Yellow DWRB is equipped with a flashing yellow light.
Flash Rate: Fl Y 2.5s
The small yellow wave buoy is connected to an orange surface float 10m apart. It's fitted with 45m poly rope which is moored to the seafloor with a clump weight and consists of one in-line float 5m above the seabed.
Mariners are advised to navigate with caution and keep well clear of monitoring device.
Advice: Deployment of 3x AWACs – Fremantle Fishing Boat Harbour and vicinity
32: 3.850S, 115: 43.366E (approximately 1 nautical mile west of FFBH)
32: 3.850S, 115: 44.465 (approximately 5m seaward of the FFBH inner traffic separation marker)
32: 3.610S, 115: 44.801E (Fremantle Sardine Jetty)
Provisional deployment: 01/04/2024
Provisional recovery: 01/04/2025
Each of the above AWACs will be mounted on a seabed aluminium box frame (800mm (L) x 800mm (W) x 500mm (H)
No vessel is to interfere with the above AWACs at any time.
Mariners are advised to navigate with caution when transiting the area and keep well clear of the above AWACs at all times.
Advice: Deployment of 3 x Directional Wave Buoy – Wanneroo Vicinity
Location 1: 31° 39.6000'S, 115° 39.8760’E
Location 2: 31° 40.6260'S, 115° 40.2360’E
Location 3: 31° 33.2760'S, 115° 37.2960’E
The above lit directional wave buoys (Fl 2.5s) are predominantly yellow in colour with black panels with a surface height of approximately 150mm. The directional wave buoy will be attached to a lit yellow surface float (Fl 2.5s) approximately 20 metres from the wave buoy.
Provisional recovery date: The above directional wave buoy will be deployed as part of the as part of environmental monitoring of waves and temperatures by UWA and will be recovered around November 2026.
Warning: Grounded Vessel – Kwinana Beach
The vessel and vessel debris may come adrift in prevailing conditions.
Mariners are advised to proceed with caution when transiting the area.
Warning: Semi-submerged fixed metal pole, Shoalwater Islands Marine Park
Mariners are advised to exercise caution when transiting the area.
Advice: Fremantle Seaweed Aquaculture Site Installation - Port Coogee
This will involve the laying of multiple surface lines and floats within the farm lease boundary in long-line formation.
This area is marked by lit Yellow Special Markers at the extremity of the lease area.
Location of marker buoys:
32: 05.193S, 115: 45.007E
32: 05.141S, 115: 45.171E
32: 05.782S, 115: 45.420E
32: 05.819S, 115: 45.271E
Flash rate: Fl Y 3s
Mariners are advised to navigate with caution when transiting the area and keep well clear of the above aquaculture site
Advice: Deployment of Sub Surface Mooring Lines - Offshore Alkimos Vicinity
Locations:
31° 42.3882'S, 115° 38.9472'E
31° 42.3218'S, 115° 38.9203'E
31° 38.1459'S, 115° 38.0995'E
31° 38.0906'S, 115° 38.0465'E
31° 34.3645'S, 115° 35.6441'E
31° 34.3042'S, 115° 35.5811'E
Each of the above mooring lines is attached to a subsurface float with a 4m clearance to the surface of the water at LAT (Lowest Astronomical Tide), with a logger and a clump weight on the seabed
Mariners are advised to exercise caution when transiting the area and keep well clear of the above subsurface mooring lines.
Warning: Bent St Channel (Safety Bay) Encroaching Sandbar
The Bent Street boat ramp is currently open however, mariners are advised to exercise caution whilst navigating through this area and should not rely solely on the two (2) lit navigational buoys outside of Tern Island for safe navigation past any sand hazard or shallow water to the boat ramp.
Skippers are reminded to keep a proper lookout and safe speed at all times.
Alternative boat ramps can be accessed at Palm Beach, Point Peron and Port Kennedy (Southern Warnbro Sound)
Advice: Deployment of LIDAR buoys, offshore Trigg vicinity
LIDAR buoy location 1: 31° 52.696'S, 115° 43.113'E
LIDAR buoy location 2: 31° 52.594'S, 115° 43.121'E
LIDAR buoy location 3: 31° 52.532'S, 115° 43.318E
LIDAR buoys are circular buoys with side mounted solar panels and wind generators extended on top. They are yellow and black in colour, approximately 4.5m in diameter and 4m in height, and equipped with flashing yellow light.
Flash rate: Q(5) Y 20s
LIDAR buoys will be deployed periodically at the above locations until around 31 December 2024.
No vessel is to moor to or interfere with the above buoys at any time.
Mariners are advised to navigate with caution when transiting the area and keep well clear of the above buoys.
Advice: Installation of submerged Light Logger Moorings, Offshore Ocean Reef
Location 1: 31° 45.705’S , 115° 43.337’E
Location 2: 31° 45.498’S , 115° 43.252’E
Location 3: 31° 45.071’S , 115° 43.477’E
Location 4: 31° 43.981’S , 115° 43.072’E
Location 5: 31° 44.184’S , 115° 43.042’E
Location 6: 31° 44.600’S , 115° 43.169’E
The above moorings will be submerged (1m at LAT) and are equipped with subsurface buoys, which are predominantly white in colour, approximately 0.2m in diameter.
Recovery date: 31/12/2025
Mariners are advised to navigate with caution when transiting the above area and keep well clear of the above light loggers at all times.