Mariners are advised that five (5) tide gauges are scheduled to be deployed on the seabed in the offshore Lacepede Islands vicinity from around 14 May 2021 to 30 September 2021 at the following locations:

• 16° 48.6’S, 122° 07.0’E (Lacepede Islands – West Island).
• 16° 49.40’S, 122° 13.70’E (Lacepede Islands – West Island).
• 16° 56.29’S, 122° 15.21’E (Lacepede Channel).
• 16° 51.4’S, 122° 27.2’E (South Head).
• 17° 01.0’S, 122° 17.0’E (Red Bluff).
• 17° 05.5’S, 122° 12.3’E (Cape Baskerville).
• 17° 22.2’S, 122° 05.3’E (Coulomb Point).

The above tide gauges will be mounted on seabed frames (specs: 1m x 0.5m) and protrude approximately 2m from the seabed.

A GNSS (Global Navigation Satellite System) buoy will also be deployed at each tide gauge position as required during this deployment. The GNSS buoys are unlit, predominantly yellow in colour (with clear perspex dome on top), approximately 0.5m wide and 0.8m in height. 

• Recovery date (provisional): 30 September 2021.
• Chart Reference: Aus 323 – Adele Island to Lacepede Islands including King Sound.

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

• Start date: 14/05/2021.
• End date: 30/09/2021.
• Issued: 25/05/2021.
• Number: 2021-74.

Mariners are advised that two (2) Directional Wave Rider buoys (DWR) have been deployed in the Rowley Shoals Marine Park vicinity around 09 March 2021 at the following locations:

• 17° 17.55414’S, 119° 21.97770’E
• 17° 18.05046’S, 119° 18.74394’E

The above buoy is predominantly yellow in colour (with black solar panels), approximately 0.42m in diameter and equipped with flashing yellow light (flash rate: Fl Y 2.5s)

• Recovery date: 30 June 2022
• Location 1: 17° 17.55414’S, 119° 21.97770’E
• Location 2: 17° 18.05046’S, 119° 18.74394’E
• Chart Reference: Aus 325 – Australia – North West Coast – Western Australia – Rowley Shoals to Bedout Islet

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

• Start date: 09/03/2021
• End date: 30/06/2022
• Issued: 15/03/2021.
• Number: 2021 - 39

Koolan Island mine site

Mariners are advised that access to the Koolan Island mine site is restricted due to navigation and marine safety dangers.

• Location: 16° 8.05's, 123° 44.03'e.
• Chart Reference: Chart AUS40.

For further details please contact Mt Gibson Iron on mobile: 0434 738 012.

Mariners are advised to navigate with caution in the area and are requested to keep a minimum of 500 metres away from the area.

Authorised by: Captain Steven Wenban, Harbour Master, Port Yampi Sound.

• End date: Until further notice.
• Issued: 17/03/2015.
• Number: 2015-60.

Port of Yampi Sound, Cockatoo Island

Mariners are advised that a mooring buoy has been installed in Cockatoo Island at the following location and will remain in place until further notice. As plotted on AUS Chart 41, Datum WGS84, Printed 24 October 2008.

• Latitude: 16° 6.04'S Longitude: 123° 36.618'E.

The buoy replaced the previous Dolphin 1A at Cockatoo wharf. The anchor blocks of the buoy are set on shore and the mooring buoy is marked with two flotation buoys.

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

Authorised by: Captain Mark Gooderham, Harbour Master, Port Yampi Sound.

• Start date: 05/12/2013.
• End date: Until further notice.
• Issued: 12/02/2014.
• Number: 2014-52.

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