Simrad ES200-7C - REV E, Installation Manual

Page: 20 / 52

Simrad ES200-7C
mounting ring will secure the transducer between them. Note
that several transducers use direction guides to allow correct
mounting.
Smooth surface is important
Mounting screws or bolts must not be extruding from the
transducer or the area immediately around it. Make sure that the
surface of the transducer face, the installation hardware used to
mount it, the hull plating and the putty around the transducer is
as even and smooth as possible. Obstructions on these surfaces
will create problems with turbulent flow.
Use a horizontal support bar on large transducers
We recommend that large transducers are fitted with a horizontal
support bar. The purpose of this support bar is to protect the
transducer from damage in the event of slamming. This happens
if the vessel hull climbs out of the water in heavy seas. The force
of the water when the hull falls down may push the transducer
up and cause damage to its mounting. The support bar can be
secured to the mounting ring using threaded rods.
[2]
Example: Box keel installation
The figure below illustrates a symmetrical box keel installation.
A Box keel
B U-shaped
support bar
(only required
on large
transducers)
C Stuffing tube
D Cable in steel
conduit
E Cable service
loop
(CD1701
1A)
A
B
D
C
E
2. Slamming is the impact of the bottom structure of a ship onto the sea surface. It is mainly observed
while sailing in waves, when the bow raises from the water and subsequently impacts on it. Slamming
induces extremely high loads to ship structures and is taken under consideration when designing ships.
(Wikipedia)
18
307120/B