Furuno CH-250 Operator's Manual page 64

3.13.2 Sample echo displays
Port-starboard picture (bottom)
You can see fish echoes at the center-right of the screen. The bottom is displayed wider as the
distance from the ship's position increases. Therefore, it may be difficult to discriminate bottom
fish.
When ship passes over fish schools
The sounding beam is directed fore-aft and the display is off-centered* to present a wider view of
the area forward of the ship. You can clearly see fish schools approaching from the bow of the
ship.
*: Automatically shifted.
Figure 3-19 Picture appearance when passing over fish schools
3-14
Figure 3-18 Port-starboard picture
Forward
FORE
FORE
Own ship
PORT
Fish
school
Bottom
Own ship
AFT
Fish
school
AFT
Fish
school
STBD