The Calliance was one of the ships carrying settlers to the short-lived Camden Harbour pastoral settlement in 1864–65. Little remains beyond a pile of ballast stones exposed at low tide at Calliance Point. Divingwawrecks warns that the location is remote, with saltwater crocodiles, and that 'the reward is far outweighed by the risk' — so this is a site to view, not dive.

Kimberley diving context: the Kimberley coast between Broome and Wyndham is one of the least-dived coastlines in Australia. Huge tides (up to 10–11 m), turbid inshore water, saltwater crocodiles around the islands and rivers, and large sharks mean that inshore diving is generally discouraged by experienced local boaters, and expedition cruise ships mostly offer snorkelling or Zodiac excursions rather than scuba. The serious diving is offshore, on atolls and island reefs far from river run-off, visited on a handful of liveaboard departures a year from Broome or Darwin. Medical help is many hours away; divers should be conservative and carry DAN or equivalent evacuation cover.

Planning notes: this is primarily a snorkelling site. Expect to spend most of the dive around 2 m, with a maximum of about 5 m. It can only be reached on a multi-day expedition or liveaboard, so it is usually one of several sites dived on the trip and choices are made by the crew on the day. Currents are significant, so timing around the tide is part of the plan. Best season: September–November (calmest window). Traffic: remote/expedition only.

Only by expedition cruise or private vessel in Camden Harbour (Kimberley coast). The ballast pile is visible at low tide; view from the shore or tender. Expedition vessels typically depart Broome or Darwin (or Wyndham) on 10–14 night Kimberley voyages, or on dedicated 7–12 night reef expeditions; private vessels need full offshore capability, long-range communications (satphone/EPIRB) and fuel for several hundred nautical miles.

Dives are run from tenders launched from the mothership, which anchors in the lee of the reef.

Kimberley offshore trips run in the dry season (roughly April–October; Scott Reef and Rowley trips cluster September–November when winds ease). The wet season (November–April) brings cyclones, and the Kimberley coast has tides up to 10–11 m, creating violent currents, whirlpools and tidal races near the mainland and inshore reefs. Offshore atolls have smaller ranges but strong currents in channels.

Strong easterly trade winds in mid-dry season can make crossings rough.

Not recommended: view the ballast pile at low tide from shore or tender.

Visited occasionally by Kimberley expedition cruises (shore visits to the Camden Harbour settlement site).