Simrad ES200-7CD
TOWED BODY DESIGN
The towed body used to hold the ES200-7CD Split-beam
transducer is not provided by Simrad. The design and
manufacturing of such a body must be made by your own
organisation, or by a third party you wish to engage to do this.
During the design phase, the following considerations must be
made.
Figure 1 Example, towed body
A
B
C
D
E
(CD017201C)
(A) = Transducer mounted
through the body plating by
means of a mounting ring
(B) = Watertight compartment
with transceiver electronics
(C) = Tail
fi
n
(D) = Tow line with built-in
cables for power supply, control
and data transfer (ethernet)
(E) = Fairings
Location of transceiver electronics
If your towed body design comprises a watertight compartment,
you may choose to install the transceiver circuitry inside the
towed body. In order to do so, you must install watertight sockets
on the bulkhead in order to connect the transducer cable(s),
control and data transfer (ethernet) and operating power.
By using a this arrangement, you avoid the signal loss you may
experience using a long transducer cable.
Depth
The upper water layers of the sea contain a myriad of small
air bubbles created by the breaking waves. In heavy seas the
uppermost 5 to 10 metres may be air-filled, with the highest
concentrations near the surface. Air bubbles absorb and reflect
6
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Summary of Contents for ES200-7CD - REV B
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