Raymarine FishFinder L265 Instruction Manual page 48

The Sidelooker Page, like the FishFinder Page, displays a graph or chart.
The scrolling vertical dashed line represents the centerline of the boat. As
new Sidelooker echoes are received, the new information appears at the
top of the display, and older information moves towards the bottom. There
is no relationship between the chart speed of the FishFinder and the
speed of the boat. (The speed at which the display moves is set by the
entry for "chart speed" in the Setup Menu.)
When the Fish Symbol feature is turned off, any fish detected will appear
as vertical marks. These may be slightly arched towards the center of the
display. The unit can also be set to display fish symbols, but the normal
fish marks are usually more helpful. The Sidelooker transducer transmits
at the 200 kHz frequency. If the unit spots any fish while the Fish Symbol
Operating Instructions
Boat symbol
Side range
Fish echo mark
Bottom/shore
indication
Centerline
Speed
Log/distance
Water temperature
Depth below boat
Fig. 3-11
Sidelooker
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