Operation Manual

Simrad PI54
26
850-165186 / Rev.B
Purse seine
When used for purse seining, the PI54 system must have one or
more of the following sensors attached to the net: Depth sensor,
Bottom Contact sensor and Temperature sensor.
The system is designed to be used with up to six sensors,
optimally two Depth sensors, one Temperature and one Bottom
Contact sensor. The sensor configuration can be tailored to suite
individual needs.
(A) = (B) = Depth / Bottom Contact sensor
(C) = Temperature / Bottom Contact sensor
(D) = Depth sensor (placed on the headrope to warn if it sinks)
Using the r ecommended sensors, the PI54 system will provide
the following information:
• When to begin pursing, and which speed to use for the most
efficient pursing
• Location of the net related to the school
• Bottom approximation without net contact
• Net sink rate, when the net has stopped sinking, and when it
starts to rise
• Water temperature at different depths
• When the gear passes the thermocline