Lowrance 5150c 操作指南

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shown by an arrow in the center of the screen. Your trail history, or 

path you've just taken, is depicted by the line extending from the ar-

row. The arrow pointing down at the top of the compass rose indicates 

the current track (direction of travel) you are taking. 
 

 

When navigating to a waypoint, the Navigation screen looks like the 

following figure. Your ground speed, track, distance and bearing to 

waypoint, and course are all shown digitally on this screen. 
NOTE: 

Remember, when the Speed, Track and Position information dis-

plays are flashing, satellite lock has not been achieved and no posi-

tion fix has been determined. A question mark will also flash on the  

present position arrow in the center of the compass rose. 

Speed (ground speed) is the velocity you are making over the ground. 

(If you wish, you can customize the Speed data box to display Closing 

Speed instead. Closing Speed is also known as velocity made good. It's 

the speed that you're making toward the waypoint. For instructions, 

see the Customize Page Displays entry in Sec. 5.) 
Track is the heading, or the current direction you are actually travel-

ing. Bearing is the direction of a line-of-sight from your present posi-

tion to the destination. No matter what direction you are steering, the 

Bearing window shows the compass direction straight to the destina-

tion from your location at the moment. Distance shows how far it is to 

the waypoint you're navigating toward.