The Point at the southern end of Agincourt Reef No. 4 is described by Silverseries and Poseidon as an excellent site with magnificent coral cover. The key attraction is the fish: large red bass and Goldman's sweetlips school around the point, with cruising barracuda and big-eye trevally in the current. The reef slopes and steps down from around 5 m to 25 m at the point.

Its coral cover is outstanding – a mix of branching, plate and massive corals with soft corals on the more exposed parts – and it hosts fairy basslets in huge numbers, turning the water orange over coral heads. Maori wrasse patrol the reef slope, and coral trout sit motionless on the coral waiting to ambush smaller fish. The schools are the highlight.

Red bass gather in large groups near the point, Goldman's sweetlips hang in formation under overhangs, and big-eyed bream (big-eye emperor) school in the shelter of the slope. Barracuda and big-eye trevally circle off the point, and grey reef sharks patrol along the edge. Because it is a point, current can wrap around the reef, especially on spring tides.

Guides typically run the dive as an out-and-back from the mooring, going deeper on the outward leg and returning shallower. In stronger currents the dive may be converted to a drift. It is best suited to divers comfortable in some current, although in calm conditions it is accessible to open water divers.

Visibility averages around 20 m and can reach 30 m. The Point is a great choice for divers who want to see large schools of fish and healthy coral in one dive, and it rewards photographers with dramatic scenes of schooling fish against coral slopes. There is also a separate site known as The Point on Agincourt Reef No. 3.

Agincourt day boats leave Crystalbrook Superyacht Marina (formerly the Reef Marina) on Wharf Street, Port Douglas, between about 8:00 and 8:30 am. Park in the marina car park or the free all-day street parking around Wharf and Dixie streets; Quicksilver, Poseidon and Calypso also run coach pick-ups from Port Douglas, Palm Cove and northern Cairns beaches. The run to the Agincourt ribbon reefs on the edge of the continental shelf is about 65–70 km north-east and takes roughly 75–90 minutes on the large catamarans (Silversonic is the fastest), longer on small-group boats such as Scuba IQ/Blue Dive.

You gear up on board and giant-stride from the dive deck at a permanent mooring; the skipper picks the sites on the day to suit wind and tide, so a named site is never guaranteed. Boats are back at the marina around 4:30 pm.

Agincourt is an outer ribbon reef on the shelf edge, so it is fully exposed to the south-east trade winds that blow from about April to September. Moorings on the protected western (back-reef) side remain diveable in 15–20 knots, but anything over 25 knots or a 2.5 m+ sea makes the crossing rough and operators may cancel or switch to more sheltered moorings. Calm spells in October–December give the glassiest days and 30 m+ visibility.

The wet season (December–April) brings northerlies, afternoon storms, cyclone risk and occasional reduced visibility after big rain events, although the outer reef is far less affected by run-off than inshore reefs. Marine stingers are present November–May. Tidal currents run along the reef edges and through the gaps between the Agincourt reefs; spring tides strengthen them, so exposed corners are usually dived on the neaps or near slack water.

Descend near the point and swim along the reef edge towards the tip at 15–20 m, watching for schools of red bass and sweetlips. Turn when the current becomes noticeable or at half gas, return shallower along the slope at 8–10 m and do your safety stop on the reef top.

Quicksilver Silversonic – daily, 3 dives across Agincourt 1–4; Poseidon (Quicksilver Group) – daily, 3 sites at Agincourt; Calypso Reef Cruises – regular Agincourt days; Scuba IQ / Blue Dive and Tech Dive Academy – small-group day trips several days a week.