 Re-assessment of the design of some 17th-century ships not designated "pinnace" sometimes uncovers the unexpected.For example, in the 17th century, brigantine referred to a two-masted sailing ship that was square-rigged on the foremast, and fore-and-aft rigged on the main mast.The designation "brig" did not exist until the early 18th century, by which time vessels described as pinnaces had been well known for at least a century and a half.