FAIR, in sea-language, is used for the disposition of the wind, when it is favourable to a ship's course, in opposition to that which is contrary or foul. The term fair is more comprehensive than large, and includes about 16 or 18 points of the compass; whereas large is confined to the beam or quarter, that is, to a wind which crosses the keel at right angles, or obliquely from the stern, but never to one right a-stern.