Some countries require a sailing license. Check with your embassy. Many countries, like the US, do not.
Various rec.boaters have posted saying ``I'm going to be in Country XXX for two weeks and would love to sail with someone on such-and-such a date,'' and have found themselves with a ride. The group's general attitude towards this sort of thing seems to be ``supportive.''
In Australia, the Monash U. Sailing Club (or its president) can be reached at inu343w@aurora.cc.monash.edu.au.
Peter Gustafsson ( peter.gustafsson@gd.chalmers.se) offers to tell folks about sailing in Sweden if they are interested.