360 is a Passions of Paradise site on Thetford Reef, named for its swing mooring, which allows the catamaran to turn through a full circle with the wind; that makes it a reliable choice on days when the breeze is variable. The mooring sits in a lagoon surrounded by coral, and the operator describes it simply as a stunning lagoon, with bommies at 12-18 m offering swim-throughs and pinnacles for divers, while snorkellers float over the tops of the bommies. Schools of grazing fish, surgeonfish, parrotfish and rabbitfish move across the reef in groups, and the bommies carry the full Thetford mix of hard corals, soft corals and anemones.

Thetford is known for giant clams, turtles, stingrays and moray eels, and for Napoleon wrasse that cruise the lagoon, and all are possible here. The layout is compact and easy to navigate, with the bommies spaced so that divers can visit several in one tank without long swims over sand. Depths are moderate and there is little current, so the site suits new and returning divers as well as snorkellers, and the sandy floor keeps the site bright for photography.

Passions added the neighbouring site East Meets West, on the eastern end of the reef, in 2016. Divernet and other guides sometimes confuse 360 on Thetford with a site of the same name on Moore Reef described by Diveplanit; they are different places. For many Passions guests it is the first reef they see, and the calm lagoon is a gentle place to settle in before a deeper second dive elsewhere on the reef.

Boat access only. Cairns day boats leave from the Reef Fleet Terminal (1 Spence Street) and the neighbouring Marlin Marina on the city waterfront, with check-in between about 7:00 and 8:00 am; most operators run transfers from city and northern-beaches accommodation, and there is paid parking near the terminal. The run of about 45 km out through Trinity Inlet and across the lagoon to Thetford Reef takes around 80 minutes on a fast catamaran and noticeably longer on slower dive boats or into a south-easterly chop. 360 is a Passions of Paradise mooring; the 360-degree swing mooring lets the boat lie to any wind.

Silverswift also lists a Three Sixty site on Thetford. Enter from the stern steps into the lagoon.

The prevailing south-east trade winds (typically 15-25 knots from April to September) are what limit Cairns outer-reef diving: above about 25 knots trips may be cancelled, and exposed eastern moorings are used only in light winds. Summer northerlies are gentler but make north-facing moorings choppy. Box jellyfish and Irukandji are present from about November to May (stinger suits on every dive), and the cyclone season runs November to April, when a system in the Coral Sea can close the reef for days.

Visibility drops after heavy rain and strong winds; spring is usually calmest and clearest. 360's swing mooring means it is used on days when the wind direction is variable or shifting; the lagoon is sheltered, but visibility is lower after heavy rain.

Descend to the lagoon floor and pick one bommie at a time, circling each at 12-18 m and using the swim-throughs, then return over the shallower coral fringe at 3-6 m for the safety stop.

Passions of Paradise – regular day-trip mooring (usable in variable winds); Silverswift – occasional; Thetford is also worked by Silverswift, Passions of Paradise, Pro Dive Cairns and Tusa Reef Tours; the mooring used on any day is chosen by the skipper according to wind, tide and other boats