54 RAYDATA Installation and Operation Handbook6.4 The Nav ChapterThe Nav Chapter pages can only display data values if your RayData isconnected to instruments providing this information via a SeaTalk busor NMEA connection. Otherwise, dashes are shown.Note: When you press the NAV key, do not hold it down for threeseconds or you will turn the RayData off.The Nav Chapter consists of four main pages and four sub-pages, asshown in the diagram below.WAYPOINTBEARINGDISTANCEHEADINGLOCKEDHEADINGPOSITIONNAVNAVNAVTTG/ETAVMGNAVBOATHEADING/RUDDERANGLETIMEBRG/DTWCOG/SOGPress NAV key to return to main screenD3068-1NAV+ from other pages/chaptersThis section describes the pages in the following order:• PositionTime & Date• Waypoint/Bearing/DistanceBRG/DTW/COG/SOGTTG/ETA/VMG• HeadingBoat Heading and Rudder Angle• Locked Heading
