Installation manual

Simrad SD570
12
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.