Furuno CH-250 manual Port-starboard picture bottom, When ship passes over fish schools

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.

Own ship

PORTSTBD

Fish

school

Bottom

Figure 3-18 Port-starboard picture

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.

Forward

FORE

Fish school

Own ship

AFT

FORE AFT Fish

school

Figure 3-19 Picture appearance when passing over fish schools

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