

Koputai is a deep wreck dive sitting at 76 to 78 metres, placing it firmly in technical diving territory where trimix or advanced nitrox planning is essential. Visibility swings considerably between 5 and 25 metres depending on conditions, so timing your dive matters. The wreck structure creates shelter and habitat, attracting wobbegong sharks, blue groupers, cuttlefish, and octopus, with weedy sea dragons occasionally present in shallower surrounding water. Current is generally mild but can strengthen, and the depth demands serious attention to narcosis risk, decompression obligations, and entanglement hazards within the wreck. A boat entry only.
-33.91065, 151.32750
May through September offers the most consistent visibility windows at this depth, so plan your bottom time and deco schedule before you splash. Confirm current conditions with local dive operators before committing, as surface reports do not always reflect what you will find at 78 metres.
Access is via boat only, typically with charter operators specializing in technical diving.
The wreck has numerous loose cables from old fishing buoy lines, posing a significant entanglement risk. This is a deep dive requiring decompression procedures.
Depth
75-78m
Visibility
5-25m
Skill Level
Technical
Entry
Boat
Boat required
Water Temp
15-25°C
Current
Mild
Best Time
May, Jun, Jul, Aug, Sep
Koputai requires technical diving, deep diving, and trimix certifications to dive safely. This New South Wales wreck sits at 76 to 78 metres depth, placing it firmly in technical diving territory that demands advanced gas management and decompression training. Recreational diving certifications are not sufficient for this challenging site.
The Koputai wreck lies at 76 to 78 metres depth off the coast of Sydney, New South Wales. This extreme depth requires trimix gas mixes and extensive decompression stops. The site is exclusively for technical divers with appropriate deep diving qualifications.
Koputai presents significant technical diving hazards including extreme depth, nitrogen narcosis risk, entanglement dangers, decompression requirements, and potentially strong currents. At 76 to 78 metres, divers face serious consequences for equipment failure or procedural errors. Proper technical training, redundant systems, and detailed dive planning are essential for safe exploration of this Sydney wreck.
Koputai hosts distinctive Sydney marine life including the rare weedy sea dragon, wobbegong sharks, blue groupers, cuttlefish, and octopus. Despite the extreme 76 to 78 metre depth, the wreck provides habitat for these species in waters ranging from 15 to 25 degrees Celsius. Visibility varies from 5 to 25 metres depending on conditions.
The best months to dive Koputai are May through September, covering the Australian winter period. These months typically offer the most stable conditions for this technical dive off Sydney. Water temperatures during this period range from 15 to 25 degrees Celsius with mild currents predominating.
Visibility at Koputai ranges from 5 to 25 metres depending on conditions and season. This variability is typical for Sydney's coastal waters, where weather patterns and currents affect underwater clarity. Technical divers should plan for reduced visibility scenarios given the site's extreme depth of 76 to 78 metres.
Koputai is accessible only by boat from Sydney, New South Wales. No shore entry is possible for this offshore technical dive site. Divers must arrange charter boat services equipped to support technical diving operations at 76 to 78 metres depth.
There is no entry fee to dive Koputai off Sydney's coast. However, divers must factor in the cost of specialised technical diving charter boats, trimix gas fills, and potentially helium-based breathing mixes required for the 76 to 78 metre depth. These technical diving expenses are substantially higher than recreational dive costs.
A 5mm wetsuit is recommended for diving at Koputai in Sydney. Water temperatures range from 15°C to 25°C.
Koputai in Sydney has depths ranging from 75 metres to 78 metres.