

The Troy D is a scuttled vessel sitting in 18 to 24 metres off Maria Island, purpose-sunk to create an artificial reef and now well-established as a wreck dive worth planning around. Visibility runs 10 to 20 metres, and with only mild current, you can spend proper time exploring the structure rather than fighting conditions. Boarfish and cuttlefish are regulars around the hull, while moray eels and grouper tend to hold in the darker recesses. Seals occasionally pass through, adding some unpredictability. The overhead environment demands solid buoyancy and a torch, and the cold water here is non-negotiable, so a quality wetsuit or drysuit is essential.
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Summer months from December through February give you the best visibility and the most comfortable water temperatures for an extended dive on the wreck. Come prepared with a dive light regardless of ambient conditions, as the interior sections stay dark.
The site is accessed via a 15-minute boat ride from Triabunna. Dive charters operate from the town.
Requires boat transport from Triabunna.
As a wreck dive, there is a risk of entanglement and penetration into overhead environments like the engine room. Divers should be comfortable with descending on a shot line.
Depth
18-24m
Visibility
10-20m
Skill Level
Intermediate
Entry
Boat
Boat required
Water Temp
12-19°C
Current
Strong
Typical Dive
45 min
Best Time
Jan, Feb, Dec
The Troy D wreck off Maria Island requires an Open Water certification at minimum, though Advanced Open Water is recommended due to the 18 to 24 metre depth and overhead environment. The wreck's intermediate skill level rating reflects the combination of cold water temperatures (12 to 18 degrees Celsius), potential entanglement hazards, and mild currents that divers must manage. Boat access is mandatory as the site lies offshore from Tasmania's East Coast.
The Troy D wreck hosts diverse Tasmanian marine species including boarfish, cuttlefish, and parrotfish around the structure, with larger predators such as reef sharks, barracudas, and grouper patrolling the site. Moray eels inhabit crevices within the wreck, whilst seals frequently visit from the nearby Maria Island sanctuary. Visibility of 10 to 20 metres provides good opportunities to observe this cold-water ecosystem.
The best months to dive the Troy D are December, January, and February during the austral summer when water temperatures reach their warmest at 18 degrees Celsius. These months offer the most comfortable conditions for Tasmania's cold water diving, though water temperature still ranges between 12 and 18 degrees Celsius. The mild currents during this period also make wreck penetration safer for appropriately certified divers.
The Troy D wreck sits at depths between 18 and 24 metres on the seabed off Maria Island, Tasmania. This intermediate depth range requires proper dive planning and places the wreck beyond recreational snorkelling depth, despite the site being listed as a snorkel location. The depth combined with the overhead environment makes Advanced Open Water certification advisable.
The primary hazards at the Troy D include the overhead environment created by the intact wreck structure, cold water temperatures of 12 to 18 degrees Celsius requiring thermal protection, and entanglement risks from fishing lines or internal wreck features. Divers must carry appropriate torches for wreck penetration and maintain proper buoyancy control in the mild currents. Night diving is permitted but increases the complexity of these hazard management requirements.
Snorkelling the Troy D is not practical as the wreck lies at 18 to 24 metres depth, well beyond safe snorkelling range. The site has a snorkel rating of only 1 out of 5, reflecting its unsuitability for surface swimmers. Scuba diving with Open Water certification is the only viable way to explore this Tasmanian wreck.
The Troy D wreck requires boat access as it lies offshore from Maria Island on Tasmania's East Coast. Charter boats departing from the East Coast region provide transport to the site, with parking facilities available at the departure points. No entry fee is charged to dive the wreck itself, though charter boat costs apply.
Troy D in East Coast is best suited for divers with some experience. You should be comfortable with your buoyancy and have logged at least 10 to 20 dives.
A 7mm wetsuit or semi-dry is recommended for diving at Troy D in East Coast. Water temperatures range from 12°C to 19°C.