65 days (well for an older fast sailing ship)
Not sure for a modern sailing vessel that doesn’t have any motors for assistance but probably not too different from older fast sailing ships, speaking of which lets look at the Cutty Sark.
Cutty Sark is a British clipper ship. Built on the River Clyde in 1869 for the Jock Willis Shipping Line, she was one of the last tea clippers to be built and one of the fastest, coming at the end of a long period of design development, which halted as sailing ships gave way to steam propulsion.
From the Royal Museums:
Captain Woodget commanded Cutty Sark 1885–1895, and with Woodget at the helm, Cutty Sark set record passages back from Australia — her fastest being 73 days from Sydney to London.
Read more at Cutty Sark in Australia
London back to Sydney?
This time she is from London again, 75 days from the Lizard to Sydney, or 80 days from London Docks”
Read more at Cutty Sark in Australia
However the Lightning made the longer passage from Melbourne to Liverpool in 65 days in 1854–55, completing a circumnavigation of the world in 5 months, 9 days, which included 20 days spent in port.
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