Simrad PI PORTABLE HYDROPHONE - INSTALLATION REV C Installation Manual page 10

Simrad PI Catch monitoring system / Portable hydrophone
6
Paravane deployment
All paravane installations require a boom or gantry capable of
towing the hydrophone a minimum of three to five meters
outboard of the vessel. This is important in order to avoid
interference caused by the main propeller turbulence.
Should a portable hydrophone be
towed in the wake of a vessel, its
range will be severely reduced due
to the associated main propeller
wash which is saturated with air
bubbles blocking the sensor
signals. Systems incorporating
hydrophones towed in this manner
can be expected to barely work, if
at all.
(A) Towed hydrophone, included
with portable type hydrophone
(314-203863).
(B) Paravane, included with
KIT-207284.
(C) Trolling weight, included with
KIT-207284.
(D) Snatch block, not available
from Simrad.
(E) Boom, not available from
Simrad.
(F) Hydrophone cable, included
with the portable hydrophone.
(G) Bight, in hydrophone cable
secured with an elastic strop to
dampen dynamic stress on the
hydrophone cable, not available
from Simrad.
851-164730 / Rev.C