Gutters Central (AR2) is the westernmost of the four engineered reef complexes installed in 2019, placed in about 28 m of water in the channel country west of Fenton Patches known to anglers as the Gutters or North Gutter. The 2019 installation was part of an $8.3 million NT Government artificial reef project described at the time as the largest single installation of artificial reefs in the Southern Hemisphere, with a design life of well over 100 years. Each module is a purpose-built concrete structure about 5 m tall, 4 m square at the base and weighing about 24 tonnes, designed with openings and internal cells to provide shelter at several levels, and the modules are grouped into a reef complex rather than a single block.

The Gutters are a naturally productive area where tidal streams sweep through channels between banks, and the reef complex was sited to take advantage of that flow. For divers this means two things: fish life around the modules can be excellent, with snapper, fingermark, cod, jewfish, trevally, queenfish and mackerel all recorded by anglers, and the current can be fierce outside a short slack window.

Underwater, expect a cluster of tall concrete towers on sand and shell, with marine growth – sponges, hydroids, oysters and soft corals – steadily covering the concrete since 2019. The internal cells of each module give shelter to cod and jewfish, while baitfish hang above the tops.

There are almost no published diver reports from Gutters Central, and it should be treated as an exploratory advanced dive for experienced Darwin divers with their own boat. It is a logical add-on to a Fenton Patches day for those wanting to see the engineered reefs, provided the tide window allows.

Launch at Cullen Bay Marina (the closest ramp with parking and fuel) or Dinah Beach, exit Darwin Harbour past East Point and head north-west across Beagle Gulf. The complex lies roughly 11 km west of the Fenton Patches wrecks – about 40 km from Darwin – so allow more than an hour each way in a trailer boat. Locate the 5 m tall modules on the sounder and drop a shot beside the complex.

Combine with Fenton Patches on the same trip.

Very exposed open water in Beagle Gulf. Dive on calm dry-season mornings (May–October) with trade winds below 15 knots and a neap-tide slack; the Gutters are named for the channels where tidal streams run strongly, so slack-water timing is critical. Afternoon south-easterlies make the long ride back rough.

Wet-season monsoon winds, storms, cyclones (November–April) and box jellyfish rule out most wet-season diving.

Descend the shot to the module group at 24–28 m, tour the complex module by module and keep each visible before moving on. Monitor no-deco limits and gas. Ascend on the shot or an SMB at the first sign of the tide running.

Modules are open concrete frames; do not enter the interior cells. Nitrox useful at 28 m sites.

No regular dive operator. Built for recreational anglers; divers visit only by private boat or on occasional club trips (Darwin Sub Aqua Club).