Wana pronounced vahna, though most Hawaiian words that start with a w are pronounced as a w such as Waikiki, Wailuku, Waikoloa. If a w is in the middle of a word it is pronounced as a v, such as Hawaii,(hah wai' ee) Hawi, (hah vee) and...what about Konawaena, which is as mispronounced as Hawaii.
*********************************** Good points Mary. J.T.