

Best for technical divers, 55-60m, boat entry, strong current.
The SS Catterthun is a 19th-century passenger steamship resting at depths between 55 and 60 metres off New South Wales. This technical dive site features both a wreck and an adjacent wall, requiring mandatory decompression stops. The site is exposed to the open ocean and is subject to strong currents that can exceed 3 knots. Visibility is highly variable, ranging from 3 to 35 metres. Due to the depth and current, this site is suitable only for experienced technical divers. Species recorded around this area include Grey Nurse Sharks, Port Jackson Sharks, and Eastern Blue Gropers. Divers must use a boat for access and carry surface marker buoys.
-32.43090, 152.57833
Divers must have at least one surface marker buoy with a 50 metre line for subsurface deployment due to strong currents.
The site is approximately 4 kilometres off the coast of Seal Rocks and requires access via a boat. Launching facilities at Seal Rocks itself are limited.
Recorded at this site
Depth
55-60m
Visibility
3-35m
Skill Level
Technical
Entry
Boat
Boat required
Water Temp
18-22°C
Current
Strong
Typical Dive
45 min
Best Time
Apr, May, Jun, Jul, Aug, Sep
No, this site is strictly for technical divers. The depth of 55 to 60 metres and the requirement for mandatory decompression stops place it well beyond standard recreational diving limits.
The wreck lies at an average depth of 57 metres, with the site ranging between 55 and 60 metres.
Species recorded around this area include Grey Nurse Sharks, Port Jackson Sharks, Fiddler Rays, and Eastern Blue Gropers.
This is a boat dive located 3000 metres from the shore. A boat charter is required to reach the site.
The best months to dive are April, May, June, July, August, and September, which generally offer the most stable visibility windows.
Diving at SS Catterthun in Seal Rocks requires the following certifications: Advanced, Wreck, Deep. Always dive within your training limits.
A 5mm wetsuit is recommended for diving at SS Catterthun in Seal Rocks. Water temperatures range from 18°C to 22°C.
The best months to visit SS Catterthun in Seal Rocks are April, May, June, July, August, and September. Conditions outside these months can still be good but are less predictable.
Divers at SS Catterthun in Seal Rocks should be aware of sharks. These encounters are generally rare and avoidable with proper awareness. Follow local safety guidance and maintain a respectful distance from all marine life.
SS Catterthun in Seal Rocks can have strong currents. Advanced experience with drift diving and current navigation is recommended.
Visibility at SS Catterthun in Seal Rocks typically ranges from 3 metres to 35 metres. Conditions vary with weather, tides, and seasons.