HMAS Perth Dive Wreck

Moderate risk: Cold water temperatures

Water temperatures in King George Sound can be very cold year-round (12–18°C), increasing the risk of hypothermia without adequate exposure protection.

Moderate risk: Strong currents

Tidal currents in King George Sound can run strongly around the wreck structure, particularly during tide changes.

Moderate risk: Depth and decompression risk

The wreck sits at ~35 m depth; snorkeling the surface is safe but free-diving to structure requires experience. For scuba, this is a deep dive requiring certifications.

Moderate risk: Strong tidal currents

King George Sound can experience strong tidal flows that sweep around Seal Island. Currents can be unpredictable and may push snorkelers/divers off course.

Moderate risk: Strong Currents in King George Sound

Tidal flows in the sound can create unpredictable currents, especially around the wreck structure.

Moderate risk: Enclosed Spaces and Entanglement

The wreck interior has tight compartments and potential entanglement hazards for divers entering the superstructure.

Low risk: Marine traffic

The wreck is in an active shipping channel and boating area; snorkelers must stay aware of vessel traffic and use a dive flag.

Low risk: Depth and entanglement

The wreck rises to only 5m from the surface in places but has many protrusions, cables, and snag hazards for snorkelers exploring close to the structure.

Low risk: Boat traffic

The wreck is accessed by boat from Albany with regular dive-charter and private vessel traffic in the Sound.

Low risk: Limited visibility

Visibility varies with swell and wind conditions; can drop suddenly during southern ocean fronts.