16
Bottom getting shallow to Starboard
Following a Channel
Following a Shoreline or Bank
on the display. In most situations the AUTO gain mode
works well, but manual adjustments will often be
required to get the optimum picture - especially when
looking far ahead in shallow water.
Forward Range
Depth
250 500
45
90
Beam Depth at Various Forward Ranges
Beam Depth =
Approx. 0.18 X
Forward Distance
In certain conditions - especially in shallow water -
you may see a horizontal display that shows a target
ahead that remains on the screen at the same
distance - even as the boat moves. This is probably
caused by a transducer sidelobe problem and can be
reduced or eliminated by decreasing the forward
gain.
A sidelobe on the display will show up at a forward
distance equal to the depth - as shown below.
100
50
46.2 Ft
Sidelobe at
same forward
distance as
depth
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