Kimberley notices

View navigational warnings, event notices and Temporary Notices To Mariners for the Kimberley region.

 Warning:  Sunken Vessel - Clerk Reef

Mariners are advised of reports of a sunken yacht within the Clerk Reef Lagoon at the Rowley Shoals Marine Park.

The yacht is said to be located nearby the moorings within the lagoon and the mast protruding the water's surface.

Mariners are advised to navigate with caution and be mindful of possible debris.

Chart reference; Aus325 - Rowley Shoals to Bedout Islet
Location: -17: 17.2600'S  119: 21.58'E
Start date: 10/3/2023 12:00:00 AM
Issued: 10/3/2023 12:00:00 AM
Notice number: 5831

 Advice:  Installation of Acoustic Receivers & Transmitters, Murdoch University, Lagrange Bay

Description: Mariners are advised that 24 x Aquatic Acoustic Telemetry Receivers & 12 x Aquatic Acoustic Transmitters have been deployed in Lagrange Bay from mid June, 2023 at the following locations:

Creeks and Channel Coordinates:

Aquatic Acoustic Receivers
18° 36.4342S, 121° 46.9842E
18° 36.4775S, 121° 47.1721E
18° 36.5730S, 121° 46.9091E
18° 37.0459S, 121° 46.9509E
18° 37.2503S, 121° 47.0932E
18° 38.8336S, 121° 46.8304E

The above acoustic receivers are attached to a screw anchor, approx.. 70 cm from the seabed. The top of each anchor is fitted with a 10 cm diam. white polystyrene float with reflective tape. A yellow EVA apple float is attached to a 50 cm rope.

Aquatic Acoustic Transmitters

18° 37.0479S, 121° 46.6353E
18° 37.1180S, 121° 46.5277E
18° 37.1705S, 121° 46.4247E
18° 37.2082S, 121° 46.3319E

The above acoustic transmitters are attached to a screw anchor. The top of each anchor is fitted with a 10 cm diam. white polystyrene float with reflective tape. A yellow EVA apple float is attached to the end of a 1m rope with the transmitter tied to the rope.

Intertidal Zone Coordinates:

Aquatic Acoustic Receivers

18° 36.9971S, 121° 46.6913E
18° 35.8523S, 121° 45.8065E
18° 37.2042S, 121° 46.3136E
18° 38.5297S, 121° 46.4534E
18° 39.4741S, 121° 46.1915E
18° 35.5447S, 121° 44.9776E
18° 36.5891S, 121° 45.4453E
18° 37.6554S, 121° 45.6831E
18° 38.7244S, 121° 45.6541E
18° 39.7576S, 121° 45.2984E

The above acoustic receivers are attached to a screw anchor, approx.. 70 cm from the seabed. The top of each anchor is fitted with a 10 cm diam. white polystyrene float with reflective tape. A yellow EVA apple float is attached to a 50 cm rope.

Aquatic Acoustic Transmitters

18° 37.6558S, 121° 45.7399E
18° 37.6565S, 121° 45.8537E
18° 37.6573S, 121° 45.9674E
18° 37.6580S, 121° 46.0812E

The above acoustic transmitters are attached to a seabed block. A 1M rope is shackled to the seabed block, with an EVA df15 float with reflective tape attached to the end.

Subtidal Zone Coordinates:

Aquatic Acoustic Receivers

18° 35.1163S, 121° 44.0560E
18° 36.0123S, 121° 43.8880E
18° 37.0037S, 121° 44.3224E
18° 38.0608S, 121° 44.5612E
18° 39.1195S, 121° 44.4424E
18° 36.4930S, 121° 42.9204E
18° 37.8093S, 121° 43.1566E
18° 39.1468S, 121° 43.1640E

The above acoustic receivers are attached to a seabed block. Three yellow subsurface df30 EVA floats are attached at approx.. 2.5 m from the seabed. One df30 EVA with reflective tape and one EVA apple floats are always at the surface.

Aquatic Acoustic Receivers

18° 39.1471S, 121° 43.2211E
18° 39.1480S, 121° 43.3348E
18° 39.1488S, 121° 43.4484E
18° 39.1495S, 121° 43.5621E

The above acoustic transmitters are attached to a seabed block. A 1M rope is shackled to the seabed block, with an EVA df15 float with reflective tape attached to the end.

Provisional recovery date: February 2026

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

Mariners are advised to exercise caution when transiting the area and keep clear of the above ecological monitoring equipment at all times.
Location: -18: 37.009'S  121: 45.104'E
Start date: 6/20/2023 12:00:00 AM
End date: 2/26/2026 12:00:00 AM
Issued: 7/11/2023 12:00:00 AM
Notice number: 5749
Page last updated: Tue Feb 15 2022 10:44:38 AM