Correct spelling for the English word "voyal" is [vˈɔ͡ɪə͡l], [vˈɔɪəl], [v_ˈɔɪ_əl] (IPA phonetic alphabet).
Among seamen, a large rope sometimes used in weighing anchors.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.