North-northeast (NNE), East-northeast (ENE), etc.ģ2-point compass roses are constructed by bisecting these angles, and coming up with quarter-winds at 111⁄4° angles of difference. The names of the half-winds are simply combinations of the principal winds to either side, principal then ordinal. Listed clockwise, these are:Īlthough modern compasses use the names of the eight principal directions (N, NE, E, SE, etc.), older compasses use the traditional Italianate wind names of Medieval origin (Tramontana, Greco, Levante, etc.)Ĥ-point compass roses use only the four 'basic winds' or 'cardinal directions' (North, East, South, West), with angles of difference at 90°.Ĩ-point compass roses use the eight principal winds-that is, the four cardinal directions (N, E, S, W) plus the four 'intercardinal' or 'ordinal directions' (NE, SE, SW, NW), at angles of difference of 45°.ġ6-point compass roses are constructed by bisecting the angles of the principal winds to come up with intermediate compass points, known as half-winds, at angles of difference of 221⁄2°. The modern compass rose has eight principal winds. Today, the idea of a compass rose is found on, or featured in, almost all navigation systems, including nautical charts, non-directional beacons (NDB), VHF omnidirectional range (VOR) systems, global-positioning systems (GPS), and similar equipment. It is also the term for the graduated markings found on the traditional magnetic compass. A compass rose, sometimes called a windrose or Rose of the Winds, is a figure on a compass, map, nautical chart, or monument used to display the orientation of the cardinal directions (north, east, south, and west) and their intermediate points.

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