To delete waypoints by symbol or category:1. On the User sub tab, highlight the waypoint to delete, andpress MENU.2. Highlight Delete by Symbol or Delete by Category, andpress ENTER.3. When deleting by symbol, highlight the symbol of thewaypoint you want to delete, and press ENTER. Whendeleting by category, select the category you want to deletefrom the list, and press ENTER.4. Highlight OK, and press ENTER to confirm. Choose Cancelor press QUIT to exit without deleting the waypoint.To delete waypoints by distance:1. On the User sub tab, highlight the waypoint to be deleted,and press MENU.2. Highlight Delete By Distance, and press ENTER.3. Select Less Than or More Than and enter the distanceusing the ROCKER.4. You can select a waypoint or point of interest as the Fromlocation. Highlight the From field and press ENTER. Fromthe Find Menu, select a location and press ENTER. WhenOK is highlighted, press ENTER.5. Highlight Delete and press ENTER to delete all waypointswithin the set location. Choose Cancel or press QUIT to exitwithout deleting the waypoints.Proximity PointsUse the Proximity Points tab to define an alarm circle around astored waypoint location. The alarm circle can help you avoid reefs,rocks, or restricted waters. Up to 100 waypoints can be listed witha maximum alarm radius of 99.99 nautical miles, statute miles, orkilometers.If a proximity alarm circle overlaps an existing alarm circle, a“Proximity Overlaps Another Proximity Waypoint” messageappears. Because the unit only alerts for one of the overlap points,use caution when navigating in these areas. If you enter an alarmcircle overlap, you are only alerted to the closest proximitywaypoint.To turn proximity alarms on or off:1. Highlight the Points tab on the Main Menu, and then selectthe Proximity sub tab.32 GPSMAP 378/478 Owner’s ManualMArIne Mode > creAtIng And usIng WAyPoInts
