I think Israeli women are the most attactive, as a group, that I have seen. (Based on a five day port visit.) Denmark is second.
Icelandic women, hands down, based on a six month deployment and numerous dets (if you like blondes, that is). Also, they nearly all drink like fish. Or at least they used to, before their country went bankrupt. Who knows, maybe their financial crisis has caused an increase in alcohol consumption. Plenty of Icelandic chicks were looking to make "friends" to try to get to the U.S. as more than just a tourist.