Hydrophones - Simrad PI50 Quick Start Manual

Simrad PI50

Hydrophones

Two hull mounted hydrophones are available, one for purse seining operations, and one
for trawl operations. You can install both, and then select active hydrophone by means of
a selector box on the bulkhead.
Purse seine hydrophone
The hull mounted hydrophone for purse seining
operations has a 90 degrees horizontal beam
and a 30 degrees vertical beam to provide the
PI50 with optimal reception from the sensors
on a purse seine.
This specific beam pattern is especially suited
for purse seining and the wide coverage area
reduces the need for careful alignment.
Trawl hydrophone
The hull mounted hydrophone for trawling operations has a 50 degrees horizontal beam
and a 30 degrees vertical beam to provide the PI50 with optimal reception from the
sensors on a bottom or pelagic trawl.
This specific beam pattern is especially suited for trawling and the wide coverage area
reduces the need for careful alignment.
Portable hydrophone
A portable hydrophone is also available. It is
designed as a temporary measure until a fixed
hydrophone can be installed at the vessel's next
planned dry docking. It has an omnidirectional
beam and a 50 meter integrated cable.
The cable is sheathed in polyurethane providing
robust external protection to compliment its 150
kg tensile strength.
The cable is supplied on a reel for convenient
retrieval and stowage, and is equipped with a
plug for easy attachment to the Sensor Receiver.
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