Transducer Coverage - Garmin GPSMAP 168 Sounder Owner's Manual And Reference Manual

Transducer Coverage

The area covered by the transmitted sound waves is determined by the cone angle of the transducer
and the water depth. Using GARMIN' s standard 20° transducer, the coverage is approximately 1/3 of the
water depth. As shown is Example 1, the coverage area at a 30-foot depth is approximately a 10-foot
diameter circle. The scale below illustrates how coverage increases as depth increases.
Coverage Diameter
Depth
1'
3'
2'
6'
3'
9'
4'
12'
5'
15'
6'
18'
7'
21'
8'
24'
9'
27'
10'
30'
Example 1.
Appendix H
Transducer Coverage
Coverage
4"
3'
Diameter
10"
6'
15"
9'
20"
12'
25"
15'
30"
18'
35"
21'
40"
24'
45"
27'
45"
30'
8° Transducer Coverage Chart
Depth
101