Technical information

EQ-55 Operators Manual 950-70017001/Iss 1.
2
Principles of Operation of an Echo Sounder Page 3.
7
Kongsberg Simrad Mesotech Ltd.
Port Coquitlam, BC - Canada
Figure 3.4 A narrow beam
transducer.
Figure 3.5 A wide
beam transducer
However, narrow beamwidth transducers have drawbacks too. As a vessel rolls,
the sound beam swings back and forth, and can occasionally be pointing too far
to port or starboard to see a small target clearly. The choice of transducer
beamwidth is always a compromise. See 3.6
Figure 3.6 Effects of a vessel rolling with a narrow beam transducer.