Operation Manual

Simrad PI54
6
850-165186 / Rev.B
Hull mounted and portable 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 o f a selector
box on the bulkhead.
Purse seining: The hull mounted
hydrophone f or purse seining operations
has a 90 degrees horizontal beam and a
30 degrees vertical beam to provide the
PI54 with optimal reception from the
sensors. This specific beam pattern is
especially suited for purse seining and the
wide coverage area reduces the need for
careful alignment.
Trawling: The hull mounted hydrophone f or trawling
operations has a 50 degrees horizontal beam and a 30degrees
vertical beam to provide the PI54 with optimal reception from
the sensors. This specific beam pattern is especially suited for
trawling and the wide coverage area reduces the need for careful
alignment.
Portable: A por table 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 omni-directional beam
and a 50 meter integrated cable which 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 Operator Unit.
(CD5582)