Garmin GPSMAP 175 Owner's Manual

Garmin GPSMAP 175 Owner's Manual Manual pdf 55 page image

The GPSMAP 175’s man overboard (MOB) function lets yousimultaneously mark and set a course to a position for quick response toemergency situations.To activate the MOB function:1. Press the B key.2. Press the T key to confirm and begin navigating to the MOB position.Once a MOB has been activated, a MOB icon will appear on the mapdisplay, and the destination field on the map page will display the bearing,distance, and ETE to the MOB position based on your present speed and course.To stop navigation to the MOB position:1. Press the G key, followed by O, to display the GOTO options page.2. Select the ‘Cancel GOTO’ option and press T.TracBack NavigationThe third method of navigating to a destination is by using the GPSMAP175’s TracBack feature. The TracBack function allows you to retrace yourpath using the track log automatically stored in the receiver’s memory, whichwill eliminate the need to store waypoints along the way. TracBack routes arecreated by reducing your track log into a route of up to 30 waypoints andactivating an inverted route along those points. Once activated, a TracBackroute will lead you back to the oldest track log point stored in memory, so it’sgood idea to clear the existing track log at the start of your current trip (e.g.,your dock) before you get started.To clear the track log and define a starting point for a TracBack route:1. Press the O key twice to display the main menu page.2. Highlight the ‘Track’ option and press T.3. Select the ‘Delete Track?’ option and press T.4. Highlight the ‘Yes’ field and press T.GOTO/MOBMOB & TracBack NavigationA. The MOB mode canbe used to set a courseto a passing spot forquick response to anemergency, fishstrikes, etc. If youwant to save theMOB waypoint, besure to rename it, asit will be overwrittenthe next time a MOB is executed.B. To define a starting point for a TracBack route, clear the track log.517