Trimix Corner

Other | Boat access

Depth: 30 m (98 ft) to 103 m (338 ft)

Trimix Corner is used by some as a starting point for a dive to Entrance Deep, the very deepest known dive spot anywhere in Victoria, being the bottom of the ancient River Yarra just inside the Port Phillip Heads in the main shipping channel.

The actual Entrance Deep spot where 103 metres has been reached is just a 5 metre by 5-metre square target. Starting from Trimix Corner divers descend down the wall looking for the deepest spot they can find. Hopefully, they find Entrance Deep, but this approach is not always successful.

At 103 metres deep this is not a dive for the faint-hearted. It's very black, barren and rocky, with incredibly treacherous currents. The ascent must be started while the tide is still coming in, slack water is very short, and the ascent must be back up the shot for as long as possible as the outgoing tide will quickly push you back over Rip Bank with a minimum depth of 20 metres. Pick up will be outside Port Phillip Heads.

The Rip & Tides Warning: Always keep an eye on sea conditions throughout any shore or boat dive within "The Rip" (aka "The Heads"). This is a dangerous stretch of water, where Bass Straight meets Port Phillip, which has claimed many ships and lives. Please read the warnings on the web page diving-the-rip before diving or snorkelling this site.

Boon Wurrung / Bunurong country

Traditional Owners — This dive site is in the traditional Country of the Boon Wurrung / Bunurong people of the Kulin Nation. This truly ancient Country includes parts of Port Phillip, from the Werribee River in the north-west, down to Wilson's Promontory in the south-east, including the Mornington Peninsula, French Island and Phillip Island, plus Western Port. We wish to acknowledge the Boon Wurrung as Traditional Owners. We pay respect to their Ancestors and their Elders, past, present and emerging. We acknowledge Bunjil the Creator Spirit of this beautiful land, who travels as an eagle, and Waarn, who protects the waterways and travels as a crow, and thank them for continuing to watch over this Country today and beyond.

 

Trimix Corner Location Map

Latitude: 38° 18.021′ S   (38.30035° S / 38° 18′ 1.26″ S)
Longitude: 144° 38.350′ E   (144.639167° E / 144° 38′ 21″ E)
Datum: WGS84 | Google Map
Added: 2012-07-22 09:00:00 GMT, Last updated: 2022-04-06 21:04:28 GMT
Source: GPS
Nearest Neighbour: Nepean Wall, 28 m, bearing 158°, SSE
Depth: 30 to 103 m.
Dive only on: SWF.

DISCLAIMER: No claim is made by The Scuba Doctor as to the accuracy of the dive site coordinates listed here. Should anyone decide to use these GPS marks to locate and dive on a site, they do so entirely at their own risk. Always verify against other sources.

The marks come from numerous sources including commercial operators, independent dive clubs, reference works, and active divers. Some are known to be accurate, while others may not be. Some GPS marks may even have come from maps using the AGD66 datum, and thus may need be converted to the WGS84 datum. To distinguish between the possible accuracy of the dive site marks, we've tried to give each mark a source of GPS, Google Earth, or unknown.