View navigational warnings, event notices and Temporary Notices To Mariners for the Gascoyne region.
Advice: Installation of Subsurface Instrument Frames – Shark Bay
Denham Channel, Bar Flats vicinity: 25.931S, 113.382E
Useless Loop ship loading facility 1: 26.087S, 113.416E
Useless Loop ship loading facility 2: 26.087S, 113.416E
Useless Loop ship loading facility 3: 26.098S, 113.401E
21/10/2023 – 22/12/2023: Settlement plate array frames
Each of the settlement plate array frames consist of an aluminium box frame (250mm x 220mm x 220mm) suspended approximately 1m below the water surface, attached to 2 stacked white surface buoys (approximately 200mm in diameter) with a metal rod running through the centre. A third white buoy (also approximately 200mm in diameter), equipped with a yellow flashing light will also be deployed (Flash rate: Fl Y 2s)
21/10/2023 – 22/10/2023: Water sampling frames
Each of the water sampling frames consists of 2 subsurface mesh frames (200mm x 200mm), approximately 1m and 3m above the seabed respectively, affixed to a rope which is attached to 1 unlit white surface buoy (approximately 200mm in diameter)
No vessel is to interfere with the above instruments and associated equipment at any time.
Mariners are advised to navigate with caution when transiting the area and keep well clear of the above instruments and associated equipment at all times.
Warning: Carnarvon Rear Lead reported to be Unlit
Warning: Norwegian Bay Rear Lead obscured
Please navigate with caution if you are entering the Bay.
Alternative anchorages are Coral Bay to the south or Tantabiddi to the north.
Advice: Dredging Works - Entrance to Carnarvon Fascine
The dredge and securing lines extend across the width of the channel. Due to natural constraints in depth surrounding the dredge, safe passage in and out the Fascine may not be achieved.
Due to the nature of her work, the dredge is restricted in her ability to manoeuvre.
Mariners are reminded to keep out of the way of the dredge and are requested to maintain a minimum distance of 100m to avoid her cables.
During those time the dredge is within segments 16-19 as per the attached plan, the channel will be not be navigable. Anticipated dates of works in this area are from mid-October to the end of November.
Vessel access windows may be provided for vessels during the Fascine dredging works.
• 14th & 15th October 10:30am – 12:30pm
• 28th & 29th October 10:00am – 12:00pm
• 13th & 14th October 11:00am – 1:00pm
• 28th & 29th November 11:30am – 1:30pm
• 16th & 17th November 1:00pm – 3:00pm
Dredging will mainly occur Monday to Sunday between the hours of 0700 and 1900hrs, with provision to take place during hours of darkness, if required.
The works will be carried out by the 18m cutter suction dredge “Ironheart”, equipped with 50m of floating line behind the dredge, and up to 1.5km of submerged pipeline extending to Babbage Island Sand Spit. The pipeline will be marked with orange buoys, equipped with flashing white lights along its’ length. The dredge and connected pipeline will remain in situ, unmanned, after normal operating hours for the duration of the works.
The dredge has no self-propulsion and uses anchors to move. Dredge anchors will also be marked with orange buoys, equipped with flashing white lights. Multiple steel wire ropes may be running above and below the waterline from the dredge during operations, obstructing the channel.
The dredge will exhibit shapes and lights in accordance with the Prevention of collisions at Sea Regulations 1983 at all times. Mariners are reminded to pass on the side of the dredge showing two diamonds during the day and two green lights at night.
It is requested that radio communication be established with the dredge before passing the dredge. Mariners are requested to always follow the dredge operator’s instructions when transiting the area. Operators will be monitoring the following radio frequencies during operating hours.
VHF Channel 16 – marine safety channel
VHF Channel 74 – working channel
As a cyclone contingency, a temporary mooring will be placed along the eastern side of the Carnarvon Boat Harbour
Location: 24° 54.023', 113° 39.086'E
Additionally, a 1.5km string of temporary anchors will be placed along Pelican Point, 150m offshore, for attaching the pipeline. The mooring and anchors will be marked at all times with yellow buoys equipped with flashing yellow lights.
Location: 24° 53.519'S, 113° 37.977'E
Mariners are advised to use caution when transiting the area and keep well clear of the above operations at all times.
Please refer to the link below for a diagram of the works area and instructions to pass the dredge.
Advice: Installation of Directional Wave Rider Buoy – Coral Bay, Offshore
Advice: Installation of 1 x Oceanographic Data Collection Instrument - Coral Bay
The oceanographic instrument protrudes 300mm from the seabed (Clearance height at LAT will be approximately 2.2m).
Mariners are advised to exercise caution when transiting the area.
Location: 23° 9.402’ S, 113°45.864’ E,
Advice: Installation of 6x Acoustic Receivers, Tantabiddi
Three of the receivers will be deployed on an orange surface float, approximately 30cm in diameter with reflective tape.
Their locations are as follows:
21° 55.364'S, 113° 58.06'E
21° 56.208'S, 113° 57.728'E
21° 56.934'S, 113° 56.802'E
Two of the recievers will be deployed on the lines of existing DBCA (Department of Biodiversity, Conservation and Attractions) moorings.
Their locations are as follows:
21° 54.774'S, 113° 58.452'E
21° 54.906'S, 113° 57.669'E
One reciever will be deployed on a star picket on the sea floor, which protrudes approxiamtely 40cm above the seabed.
It will be located as follows:
21° 56.016'S, 113° 56.69'E
Recovery date: 12/12/2023
Mariners are advised to navigate with caution when transiting the area
Advice: Advice - Deployment of 9 Subsurface Instruments - Exmouth Gulf - Bundegi Vicinity
- 21° 50.178'S, 114° 11.073'E
- 21° 49.988'S, 114° 10.693'E
- 21° 50.181'S, 114° 11.120'E
- 21° 50.070'S, 114° 10.839'E
- 21° 49.376'S, 114° 11.096'E
- 21° 49.880'S, 114° 10.545'E
- 21° 50.793'S, 114° 10.396'E
- 21° 50.973'S, 114° 10.075'E
- 21° 52.061'S, 114° 09.596'E
Water depths at LAT are reduced no more then 40cm at the above mentioned sites.
No Vessel is to interfere with the above instruments at anytime.
Mariners are advised to navigate with caution when transiting the area.
Warning: Five Finger Reef interaction with Swimmers Snorkelers Coral Bay
Mariners are advised to traverse with caution.
Advice: Deployment of Directional Wave Buoy – Offshore Tantabiddi Vicinity
Location: 21° 54.118'S, 113° 55.951'E
The above DWR is yellow in colour, approx. 0.42m in diameter and equipped with flashing yellow light
Flash rate: Fl Y 2.5s
Provisional recovery date: 22/11/2024
No vessel is to moor to, or interfere with, the above DWR.
Mariners are advised to navigate with caution when transiting the area and keep well clear of the above DWR
Advice: Installation of Directional Wave Buoy Bundegi Vicinity Ningaloo National Park
The buoy will be lit with a yellow light flashing 2.5s at the following location
Location 21° 52.146’S 114° 12.225’E
All coordinates in GDA 94.
Advice: Drifting jetty timbers, Norwest Whaling Jetty, Carnarvon
Mariners are to navigate with caution when transiting the area.
Advice: Deployment of six subsurface acoustic receivers – Exmouth Gulf
22° 18.9600 S, 114° 7.1400 E Bay of Rest (inner)
22° 18.9600 S, 114° 7.8000 E Bay of Rest (inner)
22° 15.7200 S, 114° 8.3400 E Heron Point
Each of the above receivers is attached to an anchored structure protruding approximately 0.70 metres from the seabed.
22° 17.4600 S, 114° 7.9200 E Bay of Rest (outer)
22° 16.9200 S, 114° 7.6800 E Bay of Rest (outer)
22° 17.6400 S, 114° 9.4200 E Bay of Rest (outer)
Each of the above receivers is attached to a subsurface rope and equipped with a yellow surface float.
Recovery date: 30/06/2023
Mariners are advised to navigate with Caution when transiting the area
Advice: Compulsory pilotage requirements, Port of Carnarvon
Have a LOA of 35 meters or greater; or
Are engaged in towing operations where the total length of the tow (measured from the bow of the towing vessel to the stern of the towed vessel) is 35 metres or greater.
Are required to engage the services of a suitably licensed marine pilot or the vessel Master must be the holder of a current Port of Carnarvon Pilot Exemption Certificate.
Vessels, vessel Masters or operators of vessels affected by this requirement are invited to approach the Department of Transport Harbour Masters office at email@example.com to apply for a Pilot Exemption Certificate to be issued.
Authorised by: Captain Steven Wenban, Harbour Master, Port of Carnarvon, Marine Safety Department of Transport.
Warning: Navigate with caution; Shallow water and shifting sand bars - Carnarvon Facsine
Shallow waters and shifting sand bars are reducing depths and severely restricting navigation throughout the fascine. Navigational aids should be used with caution as shifting sands may reduce navigable waters throughout.
Mariners are advised that ocean access may not be possible if launching from the Fascine boat ramp at low tides. The Carnarvon Boat Harbour boat ramp is open to provide an alternative option for launching vessels via Teggs Channel.