Installation manual

Simrad PI54
100
851-165187 / Rev.A
Mounting at the after end of a bulbous bow
Trawling hydr ophones have been successfully installed at the
after end of bulbous bows (for vessels trawling in deep water
and require tilt angles from 25 to 35 degrees). Vessels equipped
in this manner may experience signal loss in heavy weather due
to bubbles or when pounding lifts the hydr ophone out of the
water. Normally these types of interruptions are short and sensor
signals can be again received once the hydrophone(s) is
immersed.
Mounting the hydrophone (A) at the after end of a bulbous bow.
Hydrophones installed at the after end of bulbous bows should
be tilted and oriented horizontally as explained in the
corresponding sections of this manual. It is recommended t hat
other underwater acoustic equipment not be installed together
with the hydrophone(s).