Humminbird 737 User Manual
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under and adjacent to your boat, including the following items:
optional-purchase device is connected to the 700 Series™ Fishing System. If both devices are
on the display and the depth of the
Battery Voltage - the voltage of the boat’s
battery; can be set to alarm if the voltage falls
below a certain point.
RTS® (Real Time Sonar) Window
Soft Bottom
Thermoclines - layers of water with different
temperatures that appear at different depths
and different times of the year. A thermocline
typically appears as a continuous band of
many gray levels moving across the display at
the same depth.
Structure - where fish may be hiding.
Fish - fish are displayed as arches and/or fish
icons, and the unit can be set to alarm when a
fish of a certain size is detected. When a target
is detected and Fish ID+ is on, a Fish ID+
TM
symbol with depth is displayed. The size of
the symbol shows the intensity of the sonar
return. The unit will clearly show schools of
Bait Fish as "clouds" of different shapes and
sizes, depending on the number of fish and
boat speed.
be positioned in the Sonar View to
depthbelow the cursor.
83 kHz, Wide Beam Hollow Fish Symbol
200 kHz, Narrow Beam Shaded Fish Symbol