Do you know where the deepest part of Sydney Harbour is? One account says 47.2m down between Dawes Point and Blues Point.

But there are different answers depending on who you ask (or your Google results)…

Fraser has heard that the deepest part of the harbour is just off Georges Head at 32m. Although he does suggest others have told him it’s just of Pier One under the south side of the Harbour Bridge.

A passage found on a page in the Sydney Morning Herald back in 2008 came up with this rather pleasant description by a chap called Ian Irvine, of Dorrigo:

“It’s between Blues Point and Dawes Point, no question. I dived all over Sydney Harbour collecting cores for my PhD on pollution in harbour sediments. This hole is marked as 150 feet (46 metres) on the very detailed map prepared by Charles Phipps of Sydney Uni in 1967, by far the deepest part of the harbour, and it’s a very eerie dive. I went into zero visibility at about 25 metres and could hardly tell when I touched the bottom, which was (and still is) a polluted, jelly-like ooze that released streams of bubbles of hydrogen sulphide (rotten-egg gas) when I pushed in my core tubes. It raised all manner of primeval fears.”

In case you don’t know where this particular spot is, Dawes Point ir right under the southern end of Sydney Harbour Bridge and Blues Point is the western point of Lavender Bay – where SailCorp Yacht Charters is based!

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Dawes Point is where the souther pillar of the Sydney Harbour Bridge is.