Simrad SD570 Installationshandbuch PDF herunterladen (Seite 42)

Simrad SD570

850--160138 / A

2.10 Omni/Echo sounder

Thismode isalso speciallymade fortrawling, but in thismode

the trawl--locked vertical slice is replaced by an echo sounder

recording. This to ensure a more correct depth indication in

case the sonar beam is bent because of temperature layers.

Figure 9 - Omni/Echo sounder

In order to get the school presented in the echo sounder

recording, the vessel must here pass over the target.

Figure 9 also shows a typical pelagic trawling situation where

automatic tilting is selected. The dot in front of the school

showsthe position oftheschoolafter8 minutes,selected inthe

MOVEMENT submenu.

Thefallinglineintheechosounderrecordingshowsthesinking

of the trawl.

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Simrad SD570 Installationshandbuch Seite 42