View navigational warnings, event notices and Temporary Notices To Mariners for the Perth region.
Advice: Installation of aquaculture equipment and marker buoys - Owen Anchorage
The corners of the aquaculture site will be marked with yellow buoys, approximately 1.0m in height, and equipped with a flashing yellow lights.
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
Warning: Sunken Vessel – Two Rocks Marina vicinity
Advice: Dredging Works - Port Beach Sand Nourishment Project
Dredging will occur 24/7
The works will be carried out by the Trailing Suction Hopper Dredger ‘Modi R’ (67.05m x 12.80m).
‘Modi R’ is self-propelled and is restricted in its ability to manoeuvre.
‘Rind R’ survey vessel will be involved in the works independently as required.
The Dredge will be ‘Rainbowing’ the sand which is a method by which trailing suction hopper dredgers place material in shallow areas by pumping into the air through a hose with a nozzle.
‘Modi R’ will exhibit shapes and lights in accordance with the Prevention of collisions at Sea Regulations 1983.
Before navigating past ‘Modi R’, mariners are requested to contact the operators who will be monitoring the following radio frequencies:
VHF Channel 16 and Channel 12
Mariners are advised to use caution when navigating in the area and keep well clear of the above operations.
Advice: Advice - Land Reclamation Works - Jetty 3 - Fremantle Fishing Boat Harbour
The marine work will include the installation of sheet piles from a floating barge. The barge will transit between the existing wharf and Jetty 3.
Works will take place from Monday to Saturday between 7am to 6pm.
The works area will be delineated by yellow buoys, approximately one metre in height and equipped with flashing yellow lights.
There will be times when the work barge will remain in situ inside the works area outside of operating hours. All vessels taking part in these works will display shapes and lights in accordance with the Prevention of Collisions at Sea Regulations 1983 at all times. Operators will monitor Marine VHF Channels 14 and 16 during operating hours.
Mariners are advised to use caution when transiting the area and always keep well clear of the operations.
Advice: Jetty Works – Hillarys Boat Harbour
These works will take place in a staged approach at multiple jetties concurrently, and include demolition of existing jetties and construction of new replacement floating jetties A, E, F, G, H and J, Each respective works area will be closed whilst works are in progress
The works are divided into 5 stages as follows (subject to changes):
09/01/2023 – 20/04/2023: Stage 1: Demolition and construction of Jetty A fingers and Jetty A walkway
21/02/23 - 31/03/23: Stage 2: Demolition of existing Jetty A walkway between Jetty E and Jetty D
28/03/23 - 19/07/23: Stage 3: Demolition of existing jetty J/H and construction of jetty E/F
29/05/23 – 09/08/2023: Stage 4: Demolition of existing jetty A walkway; concrete panels between Jetty D and Jetty C (29/05/23 to 28/06/23).; concrete panels between Jetty C and B (29/06/23 to 26/07/23); concrete panels between Jetty B and BO (26/07/23 to 09/08/23)
07/08/23 - 02/02/24: Stage 5: Demolition of existing jetties G/F and construction of new Jetty J/H/G
Each works area will be delineated by yellow buoys, approximately one metre in height and equipped with flashing yellow lights.
These works will impact vessel traffic entering and transiting within the marina. However, fairways and access to all existing jetties and the boat ramp within the marina will be maintained at all times.
Diving operations will also take place during these works. The International Code Flag ‘A’ will be exhibited whilst diving operations are underway.
Operators will monitor Marine VHF Channel16 during operating hours.
Advice: Bent Street Boat Ramp inner Port and Starboard buoys removed
The outer set of Port and Starboard buoys 1 & 2 will remain as charted.
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.
Advice: Deployment of Sub Surface Mooring Liness - Offshore Alkimos Vicinity
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: Wrecked vessel - Alkimos Vicinity
Debris from the vessel may come adrift intermittently in prevailing conditions. Wreckage from the vessel is reported to be spread over approximately 2 kilometres of beach between Eden Beach and Alkimos.
Mariners are advised to exercise caution when transiting the area and to keep a lookout for debris.
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: Demolition and installation of new floating Jetty, Fremantle Fishing Boat Harbour Jetty 3, Capo D Orlando Drive
A walkway link between Jetty 1 & 2 and Jetty 3 and 4 will also be constructed.
Works will take place from Monday to Saturday between 7am to 6pm.
A works barge will transit between Jetty 1 & 2 and Jetty 3 during operating hours.
The works area will be delineated by yellow buoys. Flashing yellow lights visible 1 nautical mile (Flashes every 3 seconds on for 0.3 and off for 2.7 seconds) (1.3m high with) will be positioned as shown to alert mariners/users of the construction zone.
An operator will monitor Marine Radio VHF Channel 16 during operating hours and/or call site supervisor David on 0417929153.
Mariners are advised to use caution when transiting the area and always keep well clear of the below operations.
All coordinates are in GDA94.
Advice: Two Rocks Marina High Spot
• 31° 29.68693'S, 115° 34.92327'E (10m x 7m x 0.5m)
Coordinates in GDA94
The above high spot is understood to be a large exposed rock which significantly reduces the navigational depth to 1.0m CD.
Mariners are advised to navigate with caution when transiting inside Two Rocks Marina
Advice: Deployment of AWAC and Data Buoy – Offshore Alkimos
Location: 31° 38.165'S, 115° 39.077’E
The above AWAC is attached to a seabed frame (1m L x 1m W x 1m H). The data buoy is yellow in colour, approx. 1.3m in height, and equipped with flashing yellow light
Flash rate: Fl Y 4s
Provisional recovery date: 15/05/2023
No vessel is to moor to, or interfere with, the above AWAC and data buoy at any time
Mariners are advised to navigate with caution when transiting the area and keep well clear of the above AWAC and data buoy at all times.
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 2023.
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: Breakwater construction and reclamation works, Ocean Reef Marina
Access to the marina’s boat ramp and jetties will be maintained at all times.
Works on the reclamation areas commenced in September 2022 and is expected to be completed around June 2023.
Works will take place Monday to Saturday, between 7am to 6pm as required, using land based heavy machinery, including long reach excavators (approximately 30m reach), front end loaders, dump trucks and dozers.
Construction works for the reclamation areas will be within a silt curtain located in an alignment from the northern end of the boat ramp to the head of the northern breakwater. The silt curtain will be marked by red flashing lights spaced at approximately 100m intervals.
Land based operators will monitor Marine Radio VHF Channel 16 during operating hours.
Pursuant to section 66 of the Western Australian Marine Act 1982, I vary the previous notice relating to the closure of waters published on the Departments Temporary Notice to Mariners website on 26 March 2021 and close the waters to all vessels within 20m of construction works occurring on the Ocean Reef Marina Southern breakwater.
In addition, mariners are advised to use caution when transiting the area and keep well clear of the above operations at all times and note;
All waters of the Ocean Reef Marina are closed to windsurfing, Kitesurfing and winging activities
All waters within the silt curtain are closed to all vessels other than vessels associated with construction of the marina and swimming is prohibited.
This notice is valid from 12/09/2022.
Mark Briant, Navigational Safety and Moorings Manager and authorised person,
Department of Transport.
Advice: High level bridge repairs, The Navy Causeway – Mangles Bay Rockingham
These works will take place Monday to Saturday during daylight hours and are expected to be completed around 31 March 2023.
A floating work platform (6m x 12m) and scaffolding will be used in stages for all works and will be lit by yellow flashing lights. The floating platform will be lifted to perform works to the underside of the bridge. Where the platform is lifted this will reduce clearance to the bridge deck by approximately 3.5m and will also reduce the width of the span by approximately 6m in the location of the work platform. Scaffolding will also be installed on the piers and this will reduce the width of the span by approximately 2m near the bridge deck level to provide access to the scaffold.
The floating platform will be erected in the navigation span from Monday 4 July 2022 to Monday 5 September 2022
Access to the navigation channel will be maintained at all times during these works.
Operators will monitor Marine VHF Channel 16 during operating hours.
Mariners are advised to navigate with caution when transiting the area and stay well clear of the above works at all times.
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: 31/12/2023
Mariners are advised to navigate with caution when transiting the above area and keep well clear of the above light loggers at all times.