Mid West TNTM
Please subscribe to our MarineSafetyWA Twitter feed to receive regular updates on temporary notices to mariners (TNTM).
Notice 2018-76: Diving Operations, installation of 'Bubble Curtain' Tubing, entrance to Jurien Bay Boat Harbour
Entrance to Jurien Bay Boat Harbour
Mariners are advised that diving operations to install 'Bubble Curtain' tubing at the entrance to Jurien Bay Boat Harbour (JBBH) are scheduled to take place during daylight hours from Tuesday 8 May 2018 to Monday 9 July 2018, weather permitting.
- Chart Reference: Department of Transport Chart WA 947 - Jurien Bay
The international code flag 'A' will be exhibited whilst diving operations are in progress.
Rubber tubing, approximately 5 - 10 cm in diameter, will be laid along the seabed from the 'elbow' on the northern breakwater across the entrance to the tip of the southern breakwater. The tubing will have a line of holes through which compressed air escapes and, when switched on, gives the appearance of air bubbles breaking in a line at the water surface.
Operators will monitor Marine VHF Channel 16 during these operations.
The 'Bubble Curtain' is being trialled to reduce the amount of seagrass entering JBBH and will remain in place until further notice.
Mariners are advised to exercise caution when transiting the area and keep well clear of the above diving operations.
Authorised by: Mark Beal Navigational Aids Coordinator, Navigational Safety, Marine Safety Department of Transport.
- Start date: 8/05/2018.
- End date: 09/07/2018.
- Issued: 2/05/2018.
- Amended: 19/06/2018
Notice 2018-70: Kalbarri Entrance Outer Port Buoy, intermittently submerged
Entrance to Murchison River, Kalbarri
Description: Mariners are advised that the outermost port hand navigational buoy at the entrance to the Murchison River, Kalbarri may be intermittently submerged and not visible.
- Location: 27° 42.400'S, 114° 9.548'E.
- Chart Reference: Department of Transport Chart WA976 - Kalbarri.
Mariners are advised to navigate with caution when transiting the area.
Authorised by: Mark Briant Manager, Navigational Safety, Marine Safety Department of Transport.
- Start date:
- End date: Until further notice
- Issued: 23/04/2018.
Notice 2018-52: Installation of new port hand navigation aid, Entrance to Murchison River Kalbarri
Entrance to Murchison River Kalbarri
A new port hand, unlit, buoy has been installed near the entrance to the Murchison River and seaward of Oyster Reef, Kalbarri.
- Location: 27° 42.400'S, 114° 09.548'E
Authorised by: Mark Beal, Navigation Aid Coordinator, Navigational Safety, Department of Transport.
- Start date: 22/03/2018.
- End date:
- Issued: 22/03/2018.
Notice 2013-78: Cervantes pile remnants
Caravan Park Beach, Cervantes
Mariners and swimmers are advised that the swimming platform in the gazetted boating prohibited area adjacent to the Caravan Park Beach (north of Talavera Road) has been removed by inclement weather leaving four (4) pile remnants.
These pile remnants are at times fully submerged just below the waterline.
- Chart Reference: Department of Transport Chart DMH 422 - Cervantes
Mariners are advised to keep well clear of the above gazetted boating prohibited area and swimmers are advised to keep clear of the pile remnants.
Authorised by: Mark Briant A/ Marine Safety Operations Director, Marine Safety Department of Transport.
- Start date:
- End date:
- Issue date: 31/05/2013.
Notice 2011-98: Commercial fisheries, Mandurah to Geraldton
Various, Cervantes to Dongara
Mariners are advised that commercial fisheries for rock lobster and octopus are established in Western Australian coastal waters, along the coast from Bunbury to the Pilbara and from shore to the 200 metre isobath with areas of high activity between Mandurah and Geraldton, particularly in the region Cervantes to Dongara. Fishing is done using pots or traps sitting on the seabed.
Each fishery contains in excess of 30,000 pots which are marked by floats not less than 200 mm in diameter and coloured, usually fluorescent green. The floats are located on either end of a line of pots or on each individual trap. As the floats are small and unlit, a good lookout is essential when transiting the region.
The fishery is active throughout the year with operations conducted by licensed support vessels. Operators monitor Marine VHF Radio frequencies 74 and 78.
Mariners are advised to navigate with caution when navigating in WA coastal waters to keep well clear of all fishing operations at all times.
Authorised by: David Harrod FNI, General Manager, Marine Safety Department of Transport.
- Issued: August 2011.