Simrad PI44 C, Руководство оператора

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Simrad PI44
28
850-165085 / Rev.B
Bottom trawl
When used for bottom trawling, the PI44 system will give you
all necessary information about the trawl status. You should
have minimum three of the following sensors attached to the
net:
Depth sensors(s), Bottom Contact sensor, Rip sensor and
Catch sensors(s).
The system is designed to be used with up to six sensors. We
recommend that you use a Bottom Contact sensor behind the
footrope, a Height sensor behind the headrope, two Catch
sensors, a Temperature sensor and a Spread sensor. Sensor
configuration can be tailored to suite individual needs.
(A) = Depth sensor (headrope)
(B) = Depth sensor (footrope)
(C) = Bottom contact sensor
(D) = Rip sensor
(E) = (F) = Catch sensor(s)
Using the recommended sensors, the PI44 system will provide
the following information:
•
Optimal vessel speed with regard to net sink rate and bottom
approximation.
•
When the codend is full.
•
Footwire/bottom lift-off.
•
Net opening (using two depth sensors) and damage