The southern side of Bass Point Island is the deeper and more dramatic partner to the northern Lou's Reef site. From the anchorage in about 20 m the reef drops as a steeply sloping series of rocks, broken by large boulders and short vertical walls, to sand at around 28 m; further offshore the bottom continues below 32 m. The standout feature is a very large vertical wall where the base is only about 24 m – a sheer face that is covered in sponges and gorgonians and is the best place for photographs on the dive.

North of the anchorage the reef climbs to 15–20 m and then shallower still towards the island. These upper areas hold huge schools of yellowtail, ladder-finned pomfret and silver drummer, with one-spot pullers, old wife, black and six-spined leatherjackets, big bream and schools of drummer around the rocks. Cuttlefish, moray eels and red rock cod are found in the boulders.

The profile invites a long dive from deep to shallow, but the shallow section needs millpond seas because the southern face of the island takes the full force of any southerly swell. Because much of the interest lies at 24–30 m, this is a site for Advanced divers comfortable with depth, and nitrox is useful. The combination of colourful fixed growth, a real wall and heavy fish life makes it one of the better deep dives close to Sydney, and it pairs naturally with the island's northern side or the nearby bommie for the second dive.

Launch from the Shellharbour Marina boat ramp (Shellharbour Village; trailer parking and toilets), about 105 km and 1.5 hours south of central Sydney. Head east out of the harbour and around Bass Point; run to the southern side of Bass Point Island, about 4 km (10–12 minutes) from the ramp, and anchor at 34° 35.860' S 150° 54.398' E in about 20 m.

Bass Point juts well out to sea south of Shellharbour, so its outer reefs take swell from the north-east through to the south. Boat dives here want a swell under about 1.5 m and moderate winds; in a south-easterly the outer sites become rough very quickly, and the short run from Shellharbour Marina means operators can come back in if conditions build. Westerly winds in late autumn and winter give the best flat seas and clearest water, often 15–20 m.

Visibility drops after big seas stir the sand and after heavy rain. The southern face of the island is fully exposed to southerly swell and needs very calm conditions for the shallow section.

Head east from the anchor along the reef edge at 26–28 m to the big vertical wall, return shallower along the boulder slope, then continue north into the 15–20 m area and shallower water for an extended finish if the sea is flat.

Nitrox (EAN28–32) recommended to extend bottom time on the 24–30 m wall.

Shellharbour Scuba and Photography Centre runs boat dives around Bass Point from Shellharbour Marina when numbers allow; United Divers (Fairy Meadow) and Sydney-based operators such as Expedition Dive run occasional charters; most other visits are private and club boats.