thruster in shipbuilding is a propeller that can be rotated horizontally. See also Altitude (astronomy) Azimuthal quantum number Azimuthal equidistant projection Azimuth recording Bearing (navigation) Clock position Course (navigation) Inclination Longitude Latitude Magnetic declination Panning (camera) Relative bearing Sextant Solar azimuth angle Sound Localization Zenith References Further reading Rutstrum, Carl, The Wilderness Route Finder, University of Minnesota Press (2000), External links Angle Navigation Surveying Horizontal coordinate system Geodesy