Yawl

A yawl is a two-masted fore-and-aft rig in which a small mizzenmast stands abaft the rudder post (or abaft the sternpost), distinguishing it from the ketch, whose mizzen steps forward of the rudder post and carries a larger sail. The small mizzen, often a riding or steadying sail, helps balance the helm. The term also names a yawl boat, a ship’s small open workboat. The rig was common on 19th- and 20th-century working and cruising craft.