16.9 Radar mode and orientationRadar orientation modesThe radar can operate in a number of orientationmodes to suit different types of navigation.The orientation of the radar refers to the relationshipbetween the radar and the direction that you aretravelling in. There are three orientation modes tochoose from:• Head-Up• North-Up• Course-UpThese orientation modes are used in conjunctionwith motion mode to control how your boat and radarrelate to one another and how they are displayedon screen. Any changes that you make to theorientation of the radar are retained when you switchoff your multifunction display.Head-UpThis is the default mode for the radar application.NN1 2D12208-1Item Description1 Ship's Heading Marker(SHM)(indicatingthevessel'scurrent heading is upwards).2 As the vessel's headingchanges:• SHM is fixed upwards• Radar picture rotatesaccordinglyNorth-UpN N1 2D12209-1Item Description1 True north at top.2 As your vessel's headingchanges:• Radar picture is fixed(north up)• SHM rotates accordinglyNote: If heading data becomes unavailable whilstin this mode, a warning message will be shown,the status bar indicates North-Up in bracketsand the radar uses 0° heading in relative motion.When heading data becomes available once more,North-Up mode is reinstated.Note: It is not possible to select Head Up modewhen the motion mode is set to True.Course-UpN N1 2D12210-1Item Description1 Current course upwards.2 As your vessel's headingchanges:• Radar picture is fixed• SHM rotates accordinglyIf you select a new course, the picture will reset todisplay the new course upwards.The reference used for Course-Up depends uponthe information available at a given time. The systemalways prioritizes this information in the followingorder:1. Bearing from origin to destination, that is,intended course.2. Locked heading from an Autopilot.3. Bearing to waypoint.4. Instantaneous heading (when course-up isselected).Note: If heading data becomes unavailable whilstin this mode, a warning message will be shown,the status bar indicates the Course Up in bracketsand the radar uses 0° heading in relative motion.When heading data becomes available once more,Course-Up mode is reinstated.Selecting the radar orientation modeFrom the radar application:1. Select Menu.248 LightHouse multifunction display operation instructions
