Customizing Your Device Setting the Deep Water or Shallow Water Alarm 1 From the main menu, select Setup > Marine > Marine Alarm Setup . 2 Select Shallow Water > On to set an alarm to sound when the depth is less than the specified value. 3 Enter the depth that triggers the shallow water alarm. 4 Select Done . 5 Select Deep Water > On to set an alarm to sound when the depth is greater than the specified value. 6 Enter the depth that triggers the deep water alarm. 7 Select Done . Changing the Page Sequence 1 From the main menu, select Setup > Page Sequence . 2 Select a page. 3 Select Move . 4 Move the page up or down the list. 5 Press Enter .
Resetting Data You can reset trip data, delete all waypoints, clear the current track, or restore default values. 1 From the main menu, select Setup > Adding a Page 1 From the main menu, select Setup > Page Sequence . 2 Select Add Page . 3 Select a page to add. Reset . 2 Select an item to reset. 26 GPSMAP 78 Series Owner’s Manual