Meet the site
The SS Catterthun is one of the most historically significant shipwrecks on the NSW coast, an 1881-built, 2,179-ton steamer of the Eastern and Australian Steamship Company that plied the Australia-China route carrying gold sovereigns out and tea back. On 8 August 1895, having left Sydney bound for Hong Kong, she ran into a gale just after midnight near Port Stephens and subsequently struck a reef near Seal Rocks; 54 of those aboard were lost, with one lifeboat carrying 26 survivors managing to reach shore in what remains one of the deadlier maritime disasters on this stretch of coast. The ship was carrying between 8,000 and 11,000 gold sovereigns at the time of her loss, and while much of that treasure was subsequently recovered by salvage divers, around 1,000 coins are believed to remain unaccounted for — with long-standing local suspicion that some were quietly retained by early dive operators working the wreck rather than declared. The wreck today lies in around 55 to 60 metres of water, placing it firmly in technical diving territory beyond recreational limits, with her steam engine and other heavy machinery the most substantial and recognisable remaining structure after more than a century of decay and the initial salvage efforts. It remains a popular dive for technically qualified divers specifically drawn by the combination of genuine depth challenge and the wreck's dramatic gold-and-disaster history, and it is usually approached as a dedicated technical charter rather than a casual addition to a standard Seal Rocks trip. Divers attempting it need trimix training, planned staged decompression and reliable surface support, and should treat the site with the same seriousness as any deep historic wreck given both the technical demands and its status as a protected historical site.
Research this site before booking Stored site notes may be historical. These questions highlight gaps without turning old instructions into a current dive plan.
SS Catterthun wreck is recorded as Wreck in Forster & Seal Rocks. The listed access is boat. Confirm the actual meeting point, route and permission to visit; a map pin does not establish any of these.
Topics flagged by the stored research
These are questions prompted by the existing notes, not a verified or complete hazard assessment.
- Current and timing
- Ask how the operator assesses the current window for the actual route. Historical tide notes are not a departure instruction.
- Planned depth
- Confirm the intended route and training requirements; the recorded maximum is not a target.
- Water movement
- Ask how swell and local exposure affect the proposed entry, exit and route.
Historical access notes exist for this record, but have not been independently verified for current use. Request current directions from the operator or site manager rather than following an old entry description.
Questions, answered
Is SS Catterthun wreck suitable for my certification?
The record lists Technical (decompression). That does not establish suitability for every route or day. Share your training, recent experience and equipment needs with the operator and ask about the specific proposed dive.
Can I book SS Catterthun wreck through YouDive?
YouDive is an independent research directory. Contact an operator directly to confirm whether it currently runs the trip, the inclusions and the booking terms.
What you might see
Fish typical of a deep wreck habitat; specific species not well documented at this depth
Location
An 1881-built, 2,179-ton steamer of the Eastern and Australian Steamship Company that struck a reef near Seal Rocks in a gale on 8 August 1895 while carrying gold sovereigns to Hong Kong, with the loss of 54 lives; now a deep, technical wreck dive at 55-60 m.
Before you make plans
Conditions, access and operator schedules can change. This is a location guide, not a dive plan. Ask a local operator about current conditions and suitability for your training and experience.
Sources & further reading
en.wikipedia.orgforsterdivecentre.com.aumudgeediveandtravel.comRecord updated 26 Sept 2026. Source claims are being reviewed.