Simrad 398445, Руководство по установке, Страница: 46 / 66

44
404776/A
Streamlined housing mounted externally on a
wooden or polyester hull
When a streamlined transducer is mounted under a wooden or polyester hull, you must
design, manufacture and install a fairing.
A
Bolt with suitable diameter and length
B
Nut
C
Washer
D
Transducer cable
E Hull
F Fill with suitable filling compound (putty) to
reduce flow noise
G
Tarred felt
The fairing must be made by
the shipyard, and it shall placed
between the transducer and the
hull. It is required to adapt for the
deadrise angle of the hull. It is also
used to house a cable service loop.
The fairing can be made of wood,
polyester or steel, and should have
the same outline dimensions as the
transducer body.
The height of the fairing must
allow the transducer face to reach
minimum 40 centimeters below
the hull.
Use tarred felt between the fairing
and the hull.
Remember to create a small
opening on the side of the fairing to
allow trapped air to escape. Large
holes in the fairing will cause flow
noise, and must be avoided.
Once the transducer has been
installed, fill the bolt holes with a
filling compound (putty) to ensure
a smooth transducer surface.
Note
Any obstructions, cracks, dents or unevenness on the transducer face may cause flow noise.
Simrad ES38-18/200–18C Installation manual