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8-2
Display Indications
Figure 8-3 Indications of vertical scanning display
Application to Bonito and Tuna Fishing
Tracking of bonito and tuna presents a special challenge to the
sonar operator: He must try to keep them within the sonar beam,
a formidable task considering their high speed and penchant for
leaping and diving. The CSH-23F/24F, however, with its wide
vertical scanning beam, makes this task easier.
Searching
Neither the naked eye nor binoculars can continually track fish
schools which make lightning quick runs between the surface
and midwater. A sonar, however, provides a continuous view of
several hundred meters of sea area around the boat, both at the
surface and below it.