Installation manual

Trawl hydrophone installation
99
851-165187 / Rev.A
Mounting at the aft end of a shoe
Hydrophones can be mounted at the after end of a transducer
shoe for an echo sounder or other underwater acoustic
equipment. The distance between the hydrophone and such
equipment must not be less than one meter and the greater the
separation, the better. Installing a hydrophone in close proximity
to underwater acoustic equipment can reduce system
performance due to interference.
Hydrophone mounted at the aft end of a echo sounder
transducer shoe. The drawing is shown from the side, and it is
not to scale.
(A) = Outer hull.
(B) = Towards the bow
(C) = F airing
(D) = Hydrophone
(E) = Area allocated for echo sounder transducer(s)
The illustration shows a PI54 hydrophone installed aft of an
echo sounder arrangement for one or more transducers and/or
other underwater acoustic equipment. Note the minimum
allowable distance between the PI54 hydrophone and the other
equipment. As with other mounting options, hydrophones
mounted at the after end of a transducer shoe must have an
unobstructed line-of-sight to the sensors attached to the trawl.