Hasbeen,

Most of my life has been spent exploring underwater along the Aus east coast between Eden and Lizard Island way. Plus the Bahamas, Mediterranean and northern Africa/Morocco coast.

We surely passed each other somewhere out there.

I know nothing about sail but have skippered several game cruiser voyages Sydney and Brisbane to Cairns and return.
Plus I made seaworthy and delivered an ex British minesweeper Sydney to Fiji.
I would like to learn about sail.

There was a time when I informed search and rescue they were looking in the wrong direction for people lost off the NSW coast. The official search was down to Gabo Island so I chartered a plane and searched out to Lord Howe Island and into Newcastle, the latter area being where the boat belonging to 4 fishermen was found 3 weeks after they went missing.

I was asked to speak to George Creswell of the CSIRO and later he identified 200 kilometre diameter anti clockwise eddies east off Sydney-Newcastle coast, with speed of up to 5 knots at the outer edge of an eddy. Those eddies spin off the East Australian Current.
Yes, that same current phenomena that puzzled Captain Cook, the latter according to recorded History.

Experience has helped me understand the alongshore current and now something about the warm areas in the SST data that is an anomaly in AGW climate science.

I think you would know the absolute majority of turbid GBR lagoon water exists to GBR lagoon near Cape York. Not much at all exits the channels between reefs. The outer edge of the GBR has the clearest water for diving

I have been towed feet first backwards underwater for a total of about 40 hours at 6 knots, hiding with a camera inside a giant lure to film for the first time, giant black marlin attacking to feed.

Mates crewing the freight barges told me about the Cape exit.

Ex-alongshore current water between Fraser Island and the Swains Gladstone area is flowing north almost constantly as northerly flow behind it keep pushing.

I add the following to the warning in my post on this thread, at JF Aus, Sunday, 2 October 2016 8:56:25 AM.

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1367858/