RiffRaff said..
If it is get it to perth as quickly as possible then i thought you might go from uk to Portugal, canary islands,west coast Africa back up to Madagascar, just to stay a little bit north and across to west Australia.
Sounds easy doesn't it.
Sounds easy on paper, but incorrect. Canary to Brazil and then back to Sth Africa, would be better.
Along the African west coast there will be a north-bound current, just like on the west coasts of Australia and Sth America.
Via Brazil has historically been favoured as the best route, by the Portugese, the First Fleet, etc. because of the currents and wind. That's how it was discovered, by the frustration of tacking down the African west coast, so they learnt to tack further.
Free pilot charts of the 5 oceans for all the months, together with a cover sheet chart, etc. are provided by the American taxpayers here:
msi.nga.mil/NGAPortal/MSI.portal?_nfpb=true&_pageLabel=msi_portal_page_62&pubCode=0003Financially, I wouldn't think it worthwhile.