SS Catterthun
Protected Area
Seal Rocks
Why dive here
With 199+ marine species recorded in the area - including blue sharks, bull sharks, dolphins, dugongs and great white sharks - SS Catterthun offers some of Sydney & New South Wales's richest wreck diving. Water ranges 18-23°C, warmest January, February, March.
The SS Catterthun lies broken at 58 metres, a deep challenge off the coast that’s best reserved for experienced technical divers. It’s a classic Sydney wreck, split in two, with the bow and stern sections offering distinct exploration. Down there, you’ll find a good collection of grey nurse sharks often circling, sometimes just hanging out in the hold, plus plenty of wobbegongs tucked into the wreckage. The depth means it's a short bottom time, but the ship’s structure, covered in growth, and the larger marine life make it a rewarding one for those with the training. It’s a proper wreck dive, dark and often with a bit of current.
Safety Notes
Wreck site - avoid penetration without wreck diving certification. Watch for sharp metal and entanglement hazards.
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Conditions
Ocean conditions, forecast and tides for SS Catterthun
SS Catterthun Ocean Conditions
Monthly averages for SS Catterthun, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (-33.18, 151.63) (7km away)
October Averages
Sea Temperature
20°C
67°F · Range: 18.5–20.7°C
Air Temperature
17°C
63°F
Wind Speed
5.95 m/s
11.6 knots
Atmospheric Pressure
1016.2 hPa
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data
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