About notices to mariners
About navigational warnings
Navigational warnings are issued by the Department of Transport to advise mariners of Aids to Navigation outages and marine hazards that represent an immediate risk to mariners.
These warnings are broadcast on VHF and HF radio networks throughout the state by the WA Water Police. Cancelled, withdrawn or expired navigational warnings are regularly removed.
For current navigational warnings please refer to navigational warnings
Before undertaking any boating activities, mariners are advised to check appropriate Temporary Notices to Mariners (TNTMs), navigational warnings, chart corrections and current weather information.
Please subscribe to our MarineSafetyWA Twitter feed to receive regular updates on navigation warnings and Temporary Notices To Mariners (TNTM).
For other information on environmental conditions in your region, please go to Coastal data and charts
About notices to mariners (chart corrections)
Notices to mariners and chart corrections are distributed to inform seafarers about changes in Department of Transport produced nautical charts.
They are a means of keeping charts up-to-date with information of a safety or navigational nature.
About Temporary Notices To Mariners (TNTMs)
Temporary notices to mariners (TNTMs) are issued by the Department of Transport to advise mariners of events, works, activities and operations that may affect navigational safety. These include:
- Approved aquatic events and Fireworks displays;
- Marine hazards such as shallowing, siltation, submerged hazards;
- Marine works including construction, dredging, surveys and works to maritime facilities;
- Temporary closure of waters to navigation;
- Temporary deployment of monitoring stations; and
- Any other activities and operations that may hinder the safe navigation of vessels through a particular area.
For navigation aid outages (such as Aid to Navigation outages or marine hazards that represent an immediate threat to safe navigation please refer to Navigational warnings.
Before undertaking any boating activities, mariners are advised to check appropriate TNTMs, navigational warnings, chart corrections and current weather information.
To get regular updates on Temporary Notices to Mariners and navigation warnings, subscribe to our MarineSafetyWA Twitter feed.
For other information on environmental conditions in your region, please go to Coastal data and charts.
Notices issued by other agencies
The Australian Hydrographic Office is the Commonwealth authority responsible for producing the AUS series of charts and circulating Australian Notices to Mariners which often reproduce information contained in WA Department of Transport Notices to Mariners.
Other agencies that issue Notices to Mariners and Navigational Warnings include:
- Albany Port Authority.
- Australian Maritime Safety Authority (AMSA).
- Broome Port Authority.
- Dampier Port Authority.
- Esperance Ports.
- Fremantle Port Authority.
- Port Hedland Port Authority.