Pilbara notices

Mariners are advised two (2) temporary moorings are planned to be installed in the vicinity near Thevenard Island Jetty in the Port of Onslow at the following locations:

Location 1: 21: 27.91808S, 115: 1.19706E
Location 2: 21: 27.93781S, 115: 1.21062E

Installation date: 25/05/2023
Planned recovery date: 31/08/2023

The moorings are marked with surface buoys and yellow flashing lights with sequence 0.5s on, 2.5s off.

Mariners are advised to navigate with caution when transiting the area.

Mariners are advised that 13 seabed environmental monitoring instruments will be deployed in the Dampier Archipelago around Friday 5 May 2023 at the following locations:
1. Conzinc Island - 20° 32.173’ S, 116° 46.668’ E.
2. Conzinc Island - 20° 32.456' S, 116° 46.399' E.
3. COBN - 20° 32.417' S, 116° 48.193' E.
4. Angel Island - 20° 30.710' S, 116° 47.127' E.
5. Hauy Island - 20° 26.747' S, 116° 58.233' E.
6. Flying Foam Passage - 20° 29.504' S, 116° 49.060' E.
7. Gidley Island - 20° 28.261' S, 116° 47.794' E.
8. Hamersley Shoal - 20° 22.713' S, 116° 47.519' E.
9. High Point - 20° 32.398' S, 116° 41.059' E.
10. Courtenay Shoal - 20° 28.155' S, 116° 42.273' E.
11. Lady Nora Island - 20° 26.765' S, 116° 37.527' E.
12. Legendre Island - 20° 21.202' S, 116° 50.450' E.
13. Malus Islands - 20° 31.543' S, 116° 39.603' E.

Each of the above instruments consists of a yellow surface buoy (approximately 750mm wide x 920mm height and equipped with solar panels and a flashing yellow light) attached to a seabed frame (1100mm x 1100mm x 1000mm).

Flash rate: Fl Y 4s

Provisional recovery date: September 2023

No vessel is to moor to or interfere with the above instruments and surface buoys at any time.

Mariners are advised to exercise caution when transiting the area and keep well clear of the above environmental monitoring equipment.

Mariners are advised that vessel operations for diving maintenance in the vicinity of various offshore platforms and locations near Thevenard Island are scheduled to take place from 1 May 2023 to 6 June 2023 at the following locations:


Roller A Monopod: 21º 38.476’S, 114º 54.415’E (state waters)
Roller B Monopod: 21º 38.173’S, 114º 55.430’E(state waters)
Roller C Monopod: 21º 36.939’S, 114º 56.552’E (state waters)
Skate Monopod:21º 35.820’S, 114º 58.809’E (Port of Ashburton)
Yammaderry Monopod: 21° 29.368’S, 114° 59.413’E (Port of Onslow)
Cowle Monopod: 21° 31.333’S, 114° 58.179’E (Port of Ashburton)
Saladin A Tripod: 21° 26.415’S, 115° 03.244’E (Port of Onslow)
Saladin B Tripod: 21° 26.740’S, 115° 02.442’E (Port of Onslow)
Saladin C Tripod: 21° 28.766’S, 115° 00.495’E (Port of Onslow)
Anchor Location South of Thevenard Island: 21° 28.060’S, 115° 01.672’E (Port of Onslow)


The above activities will take place from the vessel “TAMS Annemarie” (LOA: 21.6m) with support from the vessel “TAMS Passage” (LOA: 10.0m) and “TAMS Ocean Spirit” (LOA: 17.4m). Operators will monitor Marine VHF channels 14 and 16 during operating hours.

“TAMS Annemarie” and “TAMS Passage” will be stationed in the vicinity of the Thevenard Offshore locations listed in the table above undertaking commercial diving operations.

“TAMS Annemarie” may remain in the field overnight moored at a platform or on a temporary mooring installed at the licenced mooring area to the South of Thevenard Island. All vessels taking part in these works display shapes and lights in accordance with the Prevention of Collisions at Sea Regulations 1983 at all times.

Diving activities will be undertaken in daylight hours only. The dive vessel will only provide accommodation during hours of darkness.

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

Mariners are advised that there is reduced depth due to stockpiling of dredge spoil in Beadon Creek Onslow, Western Australia. The stockpile will remain until further notice.

The stockpile extends from approx. 35m North of the Northern end of the Onslow Marine Support Base berth face and 100m to the south along the berth face. Eastern extents encroach approx. 35m into the channel.

Two temporary lit yellow special markers flashing Y1.5s mark the NE and SE extents of the pile.

NE Lat 21°38.665'S, Long 115°07.864'E

SE Lat 21°38.715'S, Long 115°07.871'E


Navigable depth is reduced west of the special markers.


Mariners are advised to use caution when transiting the area.

Mariners are advised that 4 subsurface monitoring stations have been deployed on 7 July 2022 in the Fortescue River, Cape Preston vicinity, at the following locations:

• 21.001°S, 116.101°E
• 21.008°S, 116.097°E
• 21.009°S, 116.097°E
• 21.012°S, 116.098°E

Each of the above monitoring stations consists of instrument sensors mounted on a frame on the riverbed with ground line and subsurface float protruding approximately 0.5m from the riverbed.

Recovery date: 31/12/2023

Mariners are advised to exercise caution when transiting the area and keep well clear of the above monitoring stations.

Vessel masters are reminded that all vessels wishing to transit or operate within the port limit which either:

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 Barrow Island 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 port.ops@transport.wa.gov.au to apply for a Pilot Exemption Certificate to be issued.

Authorised by: Captain Steven Wenban, Harbour Master, Port of Barrow Island, Marine Safety Department of Transport.

Vessel masters are reminded that all vessels wishing to transit or operate within the port limit which either:

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 Onslow 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 port.ops@transport.wa.gov.au to apply for a Pilot Exemption Certificate to be issued.

Authorised by: Captain Steven Wenban, Harbour Master, Port of Onslow, Marine Safety Department of Transport.

Vessel masters are reminded that all vessels wishing to transit or operate within the port limit which either:

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 Walcott 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 port.ops@transport.wa.gov.au to apply for a Pilot Exemption Certificate to be issued.

Authorised by: Captain Steven Wenban, Harbour Master, Port Walcott, Marine Safety Department of Transport.

Mariners are advised that 9 sawfish acoustic receivers are scheduled to be installed around 20/01/22 inshore at Mary Anne Passage, north of Onslow, at the following locations:

Locations:
Location Coordinates
1 Mardie N Offshore 21.067°S, 115.923°E
2 Mardie N Inshore 21.083°S, 115.925°E
3 Second Creek 21.135°S, 115.883°E
4 First Creek 21.117°S, 115.890°E
5 Third Creek 21.152°S, 115.869°E
6 Fourth Creek 21.175°S, 115.858°E
7 Offshore Fourth Creek 21.173°S, 115.838°E
8 Mardie S inshore 21.252°S, 115.818°E
9 Mardie S Offshore 21.232°S, 115.805°E
Each of the above receivers are attached to a weight and lifting line on the seabed protruding approximately 30cm from the seabed, and are marked by an unlit yellow surface buoy, approx. 70cm in diameter.

Recovery date: 30/11/2023

No vessel is to moor to or interfere with the above receivers and surface buoys at any time.

Chart reference: Chart AUS743 – Barrow Island to Onslow

Mariners are advised to exercise caution when transiting the area and keep well clear of the above receivers.