Garmin GPSMAP 178C Owner's Manual

Also see for GPSMAP 178C: Specifications Flush Mount Template Manual Owner's manual

Contents

Garmin GPSMAP 178C Owner's Manual Manual pdf 27 page image

17Getting StartedHighway PageHighway PageThe GPSMAP 178C Sounder’s Highway Page also provides graphic steering guidance to a destina-tion waypoint, placing greater emphasis on the straight-line desired course and the distance and direc-tion you are off course. As you head toward your destination, the middle of the screen provides visualguidance to your waypoint on a moving graphic “highway.” Your present position is at the bottomcenter of the highway display. The line down the middle of the highway represents your desired course.As you navigate toward a waypoint, the highway actually moves, indicating the direction you’re offcourse. To stay on course, simply steer toward the center of the highway or “keep it on the road”. Thedefault data fields at the top of the page indicate ‘Speed’ and ‘Distance To Next’ point, along with ‘ToCourse’ which shows the bearing to get you back on course and ‘Time To Next’ point. Use the HighwayPage as your primary navigation page (in lieu of the Compass Page) when your main concern is follow-ing a defined course.Whenever the GPSMAP 178C Sounder is in simulator mode, you can also adjust your speed andcourse from the Highway Page using the ARROW KEYPAD. As you head toward each waypointin the tour route, try adjusting your boat speed and course to get a feel for how the Highway Pageworks.To adjust the simulated boat speed/heading from the Highway Page:1. Press the UP arrow of the ARROW KEYPAD to increase the speed in 10 knot/kph/mph increments.Press the DOWN arrow to decrease the speed in the same increments. Press the LEFT and RIGHTarrows of the ARROW KEYPAD to steer the boat (adjust the heading).NOTE: In simulator mode, you may also change the simulated speed by pressing UP orDOWN on the ARROW KEYPAD from the Compass page.Highway PageCurrentDestinationDataFieldsDesiredCoursePresentPositionZoomScaleSteer towards the center of the highway to get backon course.)