Diving

Diving during daylight

Your vessel must display the International Code Flag A.

The flag must be at least 750 mm in length and not less than 600 mm in width.

Image: International Code Flag A

Diving at night

Your vessel must display the international lights to indicate that a vessel is restricted in its ability to manoeuvre.

These are three lights in a vertical line, the top and bottom are red and the middle one is white.

Your vessel should also display an anchor light.

Diving during daylight

When diving without boat, you must display the International Code Flag A.

When diving from a jetty, the flag must be at least 750 mm in length and not less than 600 mm in width.

You can also choose to display the flag from a buoy. The flag must be at least than 300 millimetres in length and 200 millimetres in width.

The flag must be clearly visible to all vessels operating nearby.

Diving at night

When diving without a boat at night, you must display a yellow-orange flashing light that can be seen from a minimum distance of 200 metres.

All vessels must keep at least 50 metres clear of boats, buoys or areas showing diving signals.

Where this is not possible, the approaching vessel should:

• proceed at the slowest speed at which the vessel can be safely navigated
• maintain a proper lookout for people or divers in the water.

All vessels must navigate to avoid injury to the diver and interference with the vessel or floating object.

Commercial fishing operators have the right to operate within 50 metres of a diving flag as long as it is safe to do so.

Divers should also avoid encroaching on fishing gear, such as pots and lines.

Before you leave home to go diving:

• Check the weather before you go. Conditions on the water’s surface can deteriorate rapidly during the dive.
• Have a contingency plan in case of bad weather.
• Check all your safety equipment is in date and in working order.
• Tell someone where you are going and when you intend to return.

If using a boat:

• Check the safety of your boat, equipment and trailer before you leave.
• Log on and log off with your local Marine Rescue Group

Download the Deckee app for safety, weather and location-based information to help you stay safe on the water

Caution! Diver Below stickers are available. 

For a copy, email edboat@transport.wa.gov.au