Humminbird 161 Operation Manual page 13

adjacent to your boat, including the following items:
be positioned in the Sonar View to provide
below the cursor.
the display and the depth of the bottom directly below the cursor. In addition, the Latitude and
the distance to travel to the cursor position and the bearing to the cursor position. A waypoint can
retrieval and use.
is connected to the 100 Series
Structure - where fish may be hiding.
200 kHz, Narrow Beam Shaded Fish Symbol
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.
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+
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.
Soft Bottom
RTS® (Real Time Sonar) Window
TM Fishing System. If both devices are connected, then only the
6
TM is on, a Fish ID+ TM symbol