Garmin gpsmap 178 Manuale Utente

1.   From the Sonar Page, press MENU, highlight ‘Show Pointer’ and press ENTER to pause the screen 

movement.

2.   Use the ARROW KEYPAD to move the cursor onto the target (underwater drop off, stump, etc.) you 

want to mark. The data window at the top of the screen displays the cursor’s depth, coordinates, and 
bearing and distance from your current position.

3.  Press and hold ENTER/MARK. The New Waypoint Page appears with the waypoint’s coordinates, 

default three-digit name, and pointer depth automatically filled in.

4.   To change the name, symbol, or depth, highlight the appropriate field and press 

ENTER. Make your 

changes and press ENTER when done.

5.   When done, move the field highlight back to the ‘OK’ prompt and press ENTER.
6.   To return to the standard Sonar Page, press QUIT; or press MENU, then highlight ‘Hide Pointer’ and 

press ENTER.

• Show/Hide Numbers — toggles showing/hiding the data fields on the sonar display.
•  Size Split — enables width adjustment of the Sonar Page split screen. This option is only available 

when a split screen zoom scale is selected. You may adjust the size of the split window anywhere 
from 1/4 to 3/4 width of the right half of the Sonar Page.

1.   From the Sonar Page split screen, press MENU.
2.   Using the 

ARROW KEYPAD, highlight ‘Size Split’ and press ENTER.

3.   Move the horizontal double-arrow LEFT or RIGHT using the 

ARROW KEYPAD until the desired verti-

cal width line shows, then press ENTER.

4.   If you wish to cancel this operation, press 

QUIT or press MENU, highlight ‘Cancel Resize’ and press 

ENTER.