Jorgensen Patch, known to Cairns crews as 'Jeorgies', is a patch reef about 45 km north-east of Cairns that Reef Experience includes among its reef locations. Reef Trip describes it frankly as an unprotected site for experienced divers, deep and subject to strong currents, with access dependent on the weather, and lists its terrain as walls, gullies, small caves, overhangs and swim-throughs. Reef Experience notes vibrant coral formations and diverse marine life.

It is a very different proposition from the sheltered lagoon moorings on neighbouring Hastings and Saxon. The walls and gullies give the dive strong vertical relief, and the caves and overhangs, lit only by indirect light, host shade-loving soft corals, sponges, soldierfish and cardinalfish. The current that makes the site challenging also feeds it: fish tend to be more numerous and larger at current-swept patches like this, with schools of fusiliers and snapper, trevally, reef sharks and turtles likely, although no site-specific species list has been published.

Divers should be comfortable with current, depth and surface-marker deployment, and should expect the site to be cancelled when conditions are unsuitable. When it can be dived, it offers experienced divers a sense of exploration rarely found on the busy Cairns day-trip circuit. Coordinates here are from Reef Experience; Reef Trip gives a slightly different position about 3 km to the south-west, so the exact location should be confirmed.

Visibility is typically 12-20 m. Divers who have only dived the sheltered moorings should build current experience elsewhere before attempting it here.

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 Jorgensen Patch takes around 75 minutes on a fast catamaran and noticeably longer on slower dive boats or into a south-easterly chop.

Reef Experience lists Jorgensen Patch among its five reef locations; access depends on the weather because the site is unprotected. Enter from the stern platform.

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. Being closer to the coast, visibility is lower than on the outer reefs, especially after rain. Reef Trip describes Jorgensen Patch as unprotected, deep and subject to strong currents, with access dependent on the weather; it is dived only in light winds and around slack water.

Descend quickly and check current. Follow the wall with the current if the guide plans a drift, looking into the gullies, small caves and overhangs at 12-20 m. Deploy a surface marker for the safety stop if away from the line.

Reef Experience – occasional, weather permitting; It is not part of any operator's fixed daily roster and is chosen only when the skipper judges the weather and tide suitable; the mooring used on any day is chosen by the skipper according to wind, tide and other boats