A small sailing boat which has either a gaff rig or a lugsail set on a mast stepped very close to the boat's stem, and carrying no foresails. This rig was common enough in lightly built upriver racing boats in the 19th century, and obtained its name in Britain from the 5-metre (16-ft 6-in.) racing boat called Una on which it was first tried in 1852. For generations it was the regular rig of the Cape Cod catboats in the USA.
Subjects: Maritime History.